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  • 301.
    Pike, Felicity
    et al.
    Stockholm Univ, Dept Phys Geog, S-11419 Stockholm, Sweden.;Stockholm Univ, Dept Ecol Environm & Plant Sci, Stockholm, Sweden..
    Jiddawi, Narriman S.
    Zanzi Marine & Coastal Solut, POB 4108, Zanzibar, Tanzania..
    Nordlund, Lina Mtwana
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Intertidal gleaning fisheries: Recognising local-scale contributions and management scenarios2024Inngår i: Marine Policy, ISSN 0308-597X, E-ISSN 1872-9460, Vol. 162, artikkel-id 106059Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Intertidal gleaning is a widespread means through which women participate in the fishery harvest sector. However, the fishery is often under recognised in management and policy-making. Accordingly, there is a need to further our understanding of the fishery, and how local factors may help or hinder effective management. This study focuses on Zanzibar, Tanzania, using focus group discussions (FGDs) and interviews to investigate localscale contributions from gleaning in seagrass dominated areas - which are particularly frequented gleaning grounds locally, and more widely in the Indo-Pacific region. The study also gathered insight into how gleaners perceived different management scenarios used elsewhere within the small-scale fishery sector. Despite being typically viewed as a sustenance means, gleaning was found to be primarily an economic activity, mainly through catching the bivalve, Anadara antiquata, and commercial gastropod species (Chicoreus ramosus and Pleuroploca spp). FGD respondents held positive pre-conceived ideas about rotating no-take zone scenarios as a management strategy, as well as indicating preferences for community-based measures. In order for no-take zones to have a higher chance of success, further investigation is needed to understand the life histories of commonly gleaned species in order to inform rotation periods, as well as developing means of cross-community cooperation due to the shared, open access nature of intertidal zones. These results demonstrate the economic importance of gleaning for coastal women in Zanzibar, who have invaluable insights, built on lived experience and local knowledge, which could enable and benefit a more inclusive management system.

    Fulltekst (pdf)
    fulltext
  • 302.
    Pinder, Adrian C.
    et al.
    Bournemouth Univ, Fac Sci & Technol, Poole, Dorset, England;Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England.
    Britton, J. Robert
    Bournemouth Univ, Fac Sci & Technol, Poole, Dorset, England.
    Harrison, Andrew J.
    Bournemouth Univ, Fac Sci & Technol, Poole, Dorset, England;Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England.
    Nautiyal, Prakash
    Hemwati Nandan Bahuguna Garhwal Univ, Dept Zool & Biotechnol, Srinagar, Uttarakhand, India.
    Bower, Shannon D.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England.
    Cooke, Steven J.
    Carleton Univ, Dept Biol, Fish Ecol & Conservat Physiol Lab, Ottawa, ON, Canada.
    Lockett, Steve
    Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England.
    Everard, Mark
    Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England;Univ West England, Coldharbour Lane,Frenchay Campus, Bristol, Avon, England.
    Katwate, Unmesh
    Bombay Nat Hist Soc, Hornbill House,Opp Lion Gate, Mumbai, Maharashtra, India.
    Ranjeet, K.
    KUFOS, Dept Aquat Environm Management, Kochi, Kerala, India.
    Walton, Sam
    Rimba, Kuala Lumpur, Malaysia.
    Danylchuk, Andy J.
    Univ Massachusetts, Dept Environm Conservat, Amherst, MA 01003 USA.
    Dahanukar, Neelesh
    IISER, Pune, Maharashtra, India.
    Raghavan, Rajeev
    Freshwater Biol Assoc, Mahseer Trust, Wareham, Dorset, England;KUFOS, Dept Fisheries Resource Management, Kochi, Kerala, India.
    Mahseer (Tor spp.) fishes of the world: status, challenges and opportunities for conservation2019Inngår i: Reviews in Fish Biology and Fisheries, ISSN 0960-3166, E-ISSN 1573-5184, Vol. 29, nr 2, s. 417-452Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    The mahseer fishes (Tor spp.) represent an iconic genus of large-bodied species of the Cyprinidae family. Across the 16 recognised species in the genus, individual fish can attain weights over 50kg, resulting in some species being considered as premier sport fishes. Tor species also generally have high religious and cultural significance throughout South and Southeast Asia. Despite their economic and cultural importance, the status of Tor fishes has been increasingly imperilled through their riverine habitats being impacted by anthropogenic activities, such as hydropower dam construction and exploitation. Moreover, conservation efforts have been constrained by knowledge on the genus being heavily skewed towards aquaculture, with considerable knowledge gaps on their taxonomy, autecology, distribution and population status. Whilst taxonomic ambiguity has been a major constraint on conservation efforts, this has been partially overcome by recent, robust taxonomic revisions. This has enabled revision of the IUCN Red List status of Tor fishes; three species are now assessed as Near Threatened', one Vulnerable', three Endangered' and one Critically Endangered'. However, eight species remain Data deficient'. Here, information on these 16 Tor fishes is synthesised for the first time, outlining the current state of knowledge for each species, including their known distributions and population status. For each species, the outstanding gaps in knowledge are also identified, and their population threats and conservation prospects outlined. Consequently, this review provides the basis for researchers to challenge and enhance the knowledge base necessary to conserve these freshwater icons in an era of unprecedented environmental changes.

    Fulltekst (pdf)
    fulltext
  • 303.
    Polpanich, Orn-Uma
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Bhatpuria, Dhyey
    Stockholm Environm Inst, 10th Floor,Kasem Uttayanin Bldg, Bangkok 10330, Thailand..
    Santos Santos, Tania Fernanda
    Latin Amer, Stockholm Environm Inst, Calle 71,11-10 Edificio Corecol,Oficina 801, Bogota 110231, Colombia..
    Krittasudthacheewa, Chayanis
    Stockholm Environm Inst, 10th Floor,Kasem Uttayanin Bldg, Bangkok 10330, Thailand..
    Leveraging Multi-Source Data and Digital Technology to Support the Monitoring of Localized Water Changes in the Mekong Region2022Inngår i: Sustainability, E-ISSN 2071-1050, Vol. 14, nr 3, artikkel-id 1739Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The limited availability of high-resolution monitoring systems for the drought phenomena and water dynamics affected by weather anomalies hinders policy decisions in a multitude of ways. This paper introduces the availability of the high-resolution Water Monitoring System (WMS) developed from a mix of sophisticated multi-spectral satellite imageries, analytic and data sciences, and cloud computing, for monitoring the changes in water levels and vegetation water stress at the local scale. The WMS was tested in the Lower Mekong Region (LMR) case basin, Thailand's Chi River Basin, in the period from January 2021 to April 2021, the dry season. The overall quality of the VHI, VCI, TCI, and NDVI drought simulation results showed a statistically positive Pearson correlation with the reservoir and dam water volume data (ranged between 0.399 and 0.575) but demonstrated a strong negative correlation with the groundwater level data (between -0.355 and -0.504). Further investigation and more detailed analysis of the influence of different physical environmental conditions related to change in groundwater level should be considered to increase scientific knowledge and understanding about the changing nature of the local system from local perspectives with the alternative use of drought indices in data-poor areas. Our result suggests that the WMS can provide quantitative spatiotemporal variations of localized and contextualized surface water changes as a preliminary analysis. The WMS results can offer guidance for finding a better smaller unit management that suits the local conditions, such as water resource management, disaster risk reduction measures (i.e., drought and flood), irrigation practice, land use planning, and crop management. The existing WMS is geared toward the early warning of water and agricultural development, progress on the SDGs, utilization of digital innovation, and improved abilities of decision-makers to monitor and foresee extreme weather events earlier and with high spatial accuracy.

    Fulltekst (pdf)
    FULLTEXT01
  • 304.
    Polpanich, Orn-Uma
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Chulalongkorn University, Stockholm Environment Institute.
    Lyon, Steve W.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Stockholm University, Department of Physical Geography.
    Krittasudthacheewa, Chayanis
    Chulalongkorn University, Stockholm Environment Institute.
    Bush, Angela L.
    Khon Kaen University, Faculty of Public Health; C&R Consulting, Townsville.
    Kemp-Benedict, Eric
    Chulalongkorn University, Stockholm Environment Institute.
    Modelling impacts of development on water resources in the Huai Sai Bat sub-basin in north-eastern Thailand with a participatory approach2017Inngår i: International Journal of Water Resources Development, ISSN 0790-0627, E-ISSN 1360-0648, Vol. 33, nr 6, s. 1020-1040Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Little is done to connect hydrological modelling with stakeholder participation. This study incorporates agricultural development and climatic changes within the Water Evaluation and Planning hydrological model. This is done with a participatory approach involving four scenario workshops, 400 household surveys and two focus group discussions in the period of 2010-2012 for the ungauged Huai Sai Bat sub-basin as a case study in the Mekong region. The modelling results indicate future increased streamflow during the wet (monsoon) season in response to shifts in the regional climate. Modelled land-use and management changes brought about large unmet water demands, primarily in the dry season.

  • 305. Primmer, Eeva
    et al.
    Termansen, Mette
    Bredin, Yennie
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Garcia-Llorente, Marina
    Berry, Pam
    Jääskeläinen, Tiina
    Bela, Györgyi
    Fabok, Veronika
    Geamana, Nicoleta
    Harrison, Paula A.
    Haslett, John R.
    Cosor, Georgia Lavinia
    Andersen, Anne H.K.
    Caught between personal and collective values: biodiversity conservation in European decision-making2017Inngår i: Environmental Policy and Governance, ISSN 1756-932X, E-ISSN 1756-9338, Vol. 27, nr 6, s. 588-604Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Individual decision-makers at different governance levels operate in social contexts, which means that they sometimes need to compromise their personal values. Yet, this dissonance is rarely the direct target of empirical analyses of environmental decision-making. We undertake a Q-analysis of decision-makers' personal perspectives and the perspectives they perceive to dominate in their decision-making contexts. Our empirical analysis addresses biodiversity conservation, which has traditionally been justified with intrinsic value- and science-based arguments. The arguments have recently been broadened with the concept of ecosystem services, highlighting human benefits and values. This evolving context is interesting because of the new rise of anthropocentric values, which can lead to decision-makers experiencing dissonance. Our analysis of interviews with 43 biodiversity conservation decision-makers from nine European countries reveals four personally held perspectives that highlight different, yet partly overlapping, values – intrinsic, human benefit, conservation and connection – as well as three perspectives perceived to dominate in decision-making – utilitarian, insurance and knowledge values. The comparison of personally held and perceived dominant perspectives points to one major conflict: those decision-makers who personally associate with intrinsic values and perceive utilitarian values to dominate in decision-making experience dissonance. By contrast, personally held human benefit values are accommodated well in decision-making contexts and decision-makers who perceive insurance values to dominate experience the least conflict with personally held values. These findings demonstrate the potential of arguments stressing long-term benefits for easing tension and conflicts in conservation decision-making, and the usefulness of empirically testing of the coincidence of individual and social values. 

  • 306.
    Pär, Holmberg
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Input-Output Analysis of Emissions Embodied in Swedish Imports from China, 1995-20092017Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    With the growth of international trade many researchers are questioning the effects on the environment by emissions embodied in international trade flows. The embodied emissions in the import (EEI) and export of Sweden are relatively unexplored despite being a trade-dependent country. However, a few earlier studies indicate that the largest share of embodied CO2 in the international trade of Sweden is in the import from China.

    This thesis evaluates Sweden’s EEI from China during the years 1995-2009 by using an input-output analysis with the emissions in bilateral trade approach. Different from existing studies, the sector distributions of the EEI are outlined with high transparency and the driving factors for the change in EEI are identified by using a structural decomposition analysis (SDA).

    Results shows that the EEI increased significantly from 1995-2009 and that the main increase occurred during 2002-2007. The import of electrical and optical equipment, textile products and renting of machinery and equipment contributed to the largest share of the EEI. The EEI induced from the total import were mainly generated from electricity, gas and water supply and other heavy industries.

    Results from the SDA showed that the scale effect from increased imports from especially heavy industries had a large influence on the growth in embodied CO2 emissions. The service sectors contributed to the second largest share of the increase in the EEI due to scale and structural effects. The technical effect, on the contrary, was markedly offsetting the increase of embodied CO2 emissions both for heavy and light industries.

    Fulltekst (pdf)
    fulltext
  • 307.
    Radu, Ioana-Bogdana
    et al.
    Swedish Museum Nat Hist, Dept Geosci, Box 50007, SE-10405 Stockholm, Sweden..
    Skogby, Henrik
    Swedish Museum Nat Hist, Dept Geosci, Box 50007, SE-10405 Stockholm, Sweden..
    Troll, Valentin R.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Deegan, Frances M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Geiger, Harri
    Univ Freiburg, Inst Earth & Environm Sci, Freiburg Im Breisgau, Germany..
    Müller, Daniel
    GFZ German Res Ctr Geosci, Potsdam, Germany..
    Thordarson, Thor
    Univ Iceland, Fac Earth Sci, Reykjavik, Iceland..
    Water in clinopyroxene from the 2021 Geldingadalir eruption of the Fagradalsfjall Fires, SW-Iceland2023Inngår i: Bulletin of Volcanology, ISSN 0258-8900, E-ISSN 1432-0819, Vol. 85, nr 5, artikkel-id 31Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Water content plays a significant role in magma genesis, ascent rate, and, ultimately, in the style and intensity of volcanic eruptions, due to its control on the density, viscosity and melting behaviour of silicate melts. A reliable method for determining the pre-eruptive magmatic water content is to use phenocrysts of nominally anhydrous minerals (NAMs) which can preserve water as hydrogen configurations in structural defects. The advantage of this method is that eruptive changes such as water loss during magma degassing may be experimentally reconstructed and analysed by infrared spectroscopy. Applying this to clinopyroxene crystals (n=17) from lava samples (n=7) from April 2021 of the Geldingadalir eruption, SW-Iceland, reveals parental water contents of 0.69 ± 0.07 to 0.86 ± 0.09 wt. % H2O. These values are higher than those expected for typical mid-ocean ridge basalts (MORB 0.3–0.5 wt. % on average) indicating a significant plume (OIB) contribution to the magma source. Moreover, such water concentrations would imply that water saturation in the ascending Geldingadalir magmas was attained only at very shallow levels within the plumbing system. This could explain the at times pulsating behaviour within the uppermost conduit system as being the result of shallow episodic water vapour exsolution in addition to the deep-sourced CO2 flux.

    Fulltekst (pdf)
    FULLTEXT01
  • 308.
    Reed, Mark S.
    et al.
    Rural Policy Centre and Thriving Natural Capital Challenge Centre, Department of Rural Economy, Environment & Society, Scotland’s Rural College (SRUC), Edinburgh, UK.
    Gent, Saskia
    Insights for Impact, Basingstoke, UK.
    Seballos, Fran
    School of Global Studies, University of Sussex, Brighton, UK.
    Glass, Jayne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Rural Policy Centre and Thriving Natural Capital Challenge Centre, Department of Rural Economy, Environment & Society, Scotland’s Rural College (SRUC), Edinburgh, UK;Natural Resources and Sustainable Development, Department of Earth Sciences, Uppsala University, Sweden.
    Hansda, Regina
    School of GeoSciences, University of Edinburgh, UK.
    Fischer-Møller, Mads
    Rural Policy Centre and Thriving Natural Capital Challenge Centre, Department of Rural Economy, Environment & Society, Scotland’s Rural College (SRUC), Edinburgh, UK;WWF Scotland, Edinburgh, UK.
    How can impact strategies be developed that better support universities to address twenty-first-century challenges?2022Inngår i: Research for All, E-ISSN 2399-8121, Vol. 6, nr 1Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To better address twenty-first-century challenges, research institutions often develop and publish research impact strategies, but as a tool, impact strategies are poorly understood. This study provides the first formal analysis of impact strategies from the UK, Canada, Australia, Denmark, New Zealand and Hong Kong, China, and from independent research institutes. Two types of strategy emerged. First, ‘achieving impact’ strategies tended to be bottom-up and co-productive, with a strong emphasis on partnerships and engagement, but they were more likely to target specific beneficiaries with structured implementation plans, use boundary organisations to co-produce research and impact, and recognise impact with less reliance on extrinsic incentives. Second, ‘enabling impact’ strategies were more top-down and incentive-driven, developed to build impact capacity and culture across an institution, faculty or centre, with a strong focus on partnerships and engagement, and they invested in dedicated impact teams and academic impact roles, supported by extrinsic incentives including promotion criteria. This typology offers a new way to categorise, analyse and understand research impact strategies, alongside insights that may be used by practitioners to guide the design of future strategies, considering the limitations of top-down, incentive-driven approaches versus more bottom-up, co-productive approaches.

    Fulltekst (pdf)
    fulltext
  • 309.
    Ren, Kaipeng
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper. School of Economics and Management, China University of Petroleum-Beijing.
    Tang, Xu
    China University of Petroleum-Beijing.
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Evaluating metal constraints for photovoltaics: Perspectives from China’s PV development2021Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 282, artikkel-id 116148Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Chinese PV industry can be expected to grow rapidly of until 2050, driven by ongoing decarbonization of the energy mix. Such large-scale deployments generate significant increases in metal demand that may induce resource dilemmas. In this study, dynamic material flow analysis is combined with scenario analysis to estimate future metal demand from Chinese PV industry and complemented by a supply risk assessment. It is found that the maximum annual copper and silver demand up to 2050 equals 79.6% and 58.5% of China’s annual production in 2019. Similarly, the baseline scenario projects maximum annual demand of Tellurium and Indium corresponding to 598.1% and 161.8% of China’s annual production in 2019. Cumulative base metal demand by 2050 for China’s PV sector is 17.3–22.8 times that of in 2018, while cumulative silver demand increases by 4.5–6 times from 2018 to 2050. In the baseline scenario, cumulative byproduct metal demand by 2050 is 14–27.3 times larger than in 2018. High annual and cumulative supply pressures indicate not only the general scarcity of base, precious, and byproduct metals but also highlights the importance of building stable trade relationships for future PV developments in China. Two different measures are identified and assessed for reducing short- and long-term supply risks. Prolonging the lifetime from 25 to 30 years can achieve a cumulative metal conservation of 6.7–24.2%, while shorter lifetime will give rise to secondary supply if recycling technologies are implemented. A clean energy shift indicates that metal availability will become an important perspective for assessing energy security, implying that resource constraints should be considered in different planning levels for renewable energy developments. Strong interconnections between energy and metal supply chains indicate that coordination and holistic nexus views are required for achieving simultaneous sustainability in both systems.

  • 310.
    Ren, Kaipeng
    et al.
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China.
    Tang, Xu
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China;China Univ Petr, Res Ctr Chinas Oil & Gas Ind Dev, Beijing 102249, Peoples R China.
    Jin, Yi
    Leiden Univ, Inst Environm Sci, CML, Einsteinweg 2, NL-2333 CC Leiden, Netherlands.
    Wang, Jianliang
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China;China Univ Petr, Res Ctr Chinas Oil & Gas Ind Dev, Beijing 102249, Peoples R China.
    Feng, Cuiyang
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China.
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Bi-objective optimization of water management in shale gas exploration with uncertainty: A case study from Sichuan, China2019Inngår i: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 143, s. 226-235Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Shale gas exploration relies heavily on freshwater inputs while generating large amounts of wastewater. With the quick development of shale gas, water management during exploration has increasingly become a hotspot from both environmental and economic perspectives. This study investigated all the key water-consuming phases in exploration and optimized the freshwater use and flowback water control using a bi-objective programming model with the consideration of uncertainties in each phase, aiming at the optimal trade-offs between economic and environmental objectives. The model conducted a case study of shale gas projects in Sichuan, China. The results show that (a) Tolerance of the uncertainty in water demand for hydraulic fracturing can effectively reduce both economic and environment cost, thereby reducing total system cost. (b) System costs depends on risk preferences of decision-makers. (c) Direct reuse is the best strategy to treat wastewater at the early phase of hydraulic fracturing; while more constraints other than onsite treatment costs should be considered when treating produced water during the production phase. (d) There exists an "economics of scale" in the water management during shale gas exploration.

  • 311.
    Ren, Kaipeng
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper. China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    Tang, Xu
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China.;China Univ Petr, Res Ctr Chinas Oil & Gas Ind Dev, Beijing 102249, Peoples R China..
    Wang, Peng
    Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China..
    Willerström, Jakob
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Bridging energy and metal sustainability: Insights from China's wind power development up to 20502021Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 227, artikkel-id 120524Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Concerns over anthropogenic climate change and sustainable development motivate rapid expansion of renewable energy in China. This paper explores metal demand caused by projected wind power developments in China up to 2050. Dynamic material flow analysis is combined with explorative energy scenarios to evaluate induced demand of base metals (copper, steel, aluminum, nickel) and rare earth elements (neodymium and dysprosium). The results indicate that annual demand of base metals for Chinese wind power is up to 12 times larger in 2050 than in 2018, and the cumulative demand is up to 23 times larger. Copper and nickel show greater supply pressure than aluminum and steel in the wind power sector. Cumulative copper and nickel demand of wind power sector are 9-11.9 Mt and 2.1-2.8 Mt respectively, which corresponds to 35-45.9% of copper reserves and 74-101% of nickel reserves in China. For rare earth elements demand, more than 18-fold increases are expected for annual demand in 2050 compared with 2020, and cumulative demand of neodymium and dysprosium are 1.6-3.3% and 1.4-2.8% of their reserves respectively. Recycling will play an important role after 2050 as a secondary supply of metal for Chinese wind power, and lacks noteworthy impacts on short-term future outlooks.

  • 312.
    Robinson, Mark
    et al.
    Univ Edinburgh, Dept Geosci, Edinburgh, Midlothian, Scotland..
    van Veelen, Bregje
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Thinking outside the neoliberal box?: The discursive potential of national climate legislation for the local governance of climate change2022Inngår i: Local Environment: the International Journal of Justice and Sustainability, ISSN 1354-9839, E-ISSN 1469-6711, Vol. 27, nr 6, s. 682-696Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In recent years there has been a renewed interest in subnational levels of governance as sites of potential and renewed ambition on climate change. One recent challenge to dominant neoliberal discourses of climate governance is legislation enacted in Wales, which places sustainable development as the central organising principle of local government. Through a Critical Discourse Analysis, supplemented by stakeholder interviews, this research analyses the discursive potential of this legislation in reshaping local governance of climate change. The findings show that the introduction of new legislation can foster the emergence of collaborative structures and collective language, but is limited in its ability to broaden climate governance discourses. This research highlights how seemingly progressive legislation is hampered in its potential through its hybridisation with already-existing neoliberal climate governance discourses and structures. It also demonstrates the importance of discourse analysis in identifying subtle narratives at work in the governance of climate change.

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  • 313.
    Roud, Sophie C.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, Munich, Germany.
    Gilder, Stuart A.
    Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, Munich, Germany..
    Contrasting Recording Efficiency of Chemical Versus Depositional Remanent Magnetization in Sediments2024Inngår i: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 51, nr 7, artikkel-id e2024GL108243Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    How and when sedimentary rocks record Earth's magnetic field is complex. Most studies assume a time-progressive lock-in mechanism during sediment deposition called depositional remanent magnetization (DRM). However, magnetic minerals can also form in situ, recording a chemical remanent magnetization (CRM) that is discontinuous in time. Disentangling the two mechanisms represents a major hurdle, and differences in their recording efficiencies remain unexplored. Here, our theoretical solutions demonstrate that CRM intensities exceed DRM by a factor of six when acquired in the same magnetic field. Novel experiments growing greigite (Fe3S4) in sediments and subsequent redeposition under identical magnetic field conditions confirm the predicted difference in recording efficiency. Thus, if left unrecognized, CRM leads to overestimated paleointensity and deserves more attention when interpreting Earth's magnetic history from sedimentary records. Recognition of fundamental differences between CRM and DRM characteristics provide a way forward to distinguish the recording mechanisms through routine laboratory protocols.

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  • 314. Rust, Niki A.
    et al.
    Stankovics, Petra
    Jarvis, Rebecca M.
    Morris-Trainor, Zara
    de Vries, Jasper R.
    Ingram, Julie
    Mills, Jane
    Glickman, Jenny A.
    Parkinson, Joy
    Toth, Zoltan
    Hansda, Regina
    McMorran, R
    Glass, Jayne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Reed, Mark
    Have farmers had enough of experts?2022Inngår i: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 69, nr 1, s. 31-44Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The exponential rise of information available means we can now, in theory, access knowledge on almost any question we ask. However, as the amount of unverified information increases, so too does the challenge in deciding which information to trust. Farmers, when learning about agricultural innovations, have historically relied on in-person advice from traditional ‘experts’, such as agricultural advisers, to inform farm management. As more farmers go online for information, it is not clear whether they are now using digital information to corroborate in-person advice from traditional ‘experts’, or if they are foregoing ‘expert’ advice in preference for peer-generated information. To fill this knowledge gap, we sought to understand how farmers in two contrasting European countries (Hungary and the UK) learnt about sustainable soil innovations and who influenced them to innovate. Through interviews with 82 respondents, we found farmers in both countries regularly used online sources to access soil information; some were prompted to change their soil management by farmer social media ‘influencers’. However, online information and interactions were not usually the main factor influencing farmers to change their practices. Farmers placed most trust in other farmers to learn about new soil practices and were less trusting of traditional ‘experts’, particularly agricultural researchers from academic and government institutions, who they believed were not empathetic towards farmers’ needs. We suggest that some farmers may indeed have had enough of traditional ‘experts’, instead relying more on their own peer networks to learn and innovate. We discuss ways to improve trustworthy knowledge exchange between agricultural stakeholders to increase uptake of sustainable soil management practices, while acknowledging the value of peer influence and online interactions for innovation and trust building.

  • 315. Rust, Niki
    et al.
    Lunder, Ole Erik
    Iversen, Sara
    Vella, Steven
    Oughton, Elizabeth A.
    Breland, Tor Arvid
    Glass, Jayne H.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Maynard, Carly M.
    McMorran, Rob
    Reed, Mark S.
    Perceived Causes and Solutions to Soil Degradation in the UK and Norway2022Inngår i: Land, E-ISSN 2073-445X, Vol. 11, nr 1Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Soil quality is declining in many parts of the world, with implications for the productivity, resilience and sustainability of agri-food systems. Research suggests multiple causes of soil degradation with no single solution and a divided stakeholder opinion on how to manage this problem. However, creating socially acceptable and effective policies to halt soil degradation requires engagement with a diverse range of stakeholders who possess different and complementary knowledge, experiences and perspectives. To understand how British and Norwegian agricultural stakeholders perceived the causes of and solutions to soil degradation, we used Q-methodology with 114 respondents, including farmers, scientists and agricultural advisers. For the UK, respondents thought the causes were due to loss of soil structure, soil erosion, compaction and loss of organic matter; the perceived solutions were to develop more collaborative research between researchers and farmers, invest in training, improve trust between farmers and regulatory agencies, and reduce soil compaction. In Norway, respondents thought soils were degrading due to soil erosion, monocultures and loss of soil structure; they believed the solutions were to reduce compaction, increase rotation and invest in agricultural training. There was an overarching theme related to industrialised agriculture being responsible for declining soil quality in both countries. We highlight potential areas for land use policy development in Norway and the UK, including multi-actor approaches that may improve the social acceptance of these policies. This study also illustrates how Q-methodology may be used to co-produce stakeholder-driven policy options to address land degradation.

  • 316.
    Ryfisch, Simon
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper.
    Seeger, Isabel
    Deutsch Umwelthilfe eV, Berlin, Germany..
    McDonald, Hugh
    Ecol Inst, Berlin, Germany..
    Lago, Manuel
    Ecol Inst, Berlin, Germany..
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Opportunities and limitations for Nature-Based Solutions in EU policies - Assessed with a focus on ponds and pondscapes2023Inngår i: Land use policy, ISSN 0264-8377, E-ISSN 1873-5754, Vol. 135, artikkel-id 106957Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Nature-Based Solutions (NBS) are growing in popularity to mitigate and adapt to climate change, enhance biodiversity, and secure human well-being. However, the emergence of NBS has not generated equal attention for all ecosystems. One such neglected ecosystem are ponds and pondscapes (i.e. groups of ponds in a landscape), which are deteriorating in quality and diminishing in quantity. As the European Union (EU) is regarded as influential in the conceptualisation and operationalisation of NBS, we conducted a qualitative content analysis of 38 EU policies to identify opportunities and limitations for the implementation of ponds and pondscapes as NBS. We focus our analysis on ponds and pondscapes, but their prevalence in different landscapes and their multitude of benefits allows us to also make some inferences about the implications of the EU policy context for NBS at large. We find that EU policies strengthen NBS linked to existing and potential Natura 2000 sites, as well as to ecosystems protected through the EU's Birds and Habitats Directives and Water Framework Directive. However, if ecosystems fall outside of these already established policies - as is the case with the vast majority of ponds and pondscapes - their implementation as NBS may be hampered. We also find that the EU emphasises natural water retention measures and carbon-rich ecosystems for climate change adaptation and mitigation, but mostly does not explicitly include ponds and pondscapes despite their potential contributions. Other findings are that the EU's Horizon Europe research policy will likely influence which ecosystems will be used and financed as NBS, while the exact ambition and selection of NBS rests with lower-level authorities or individuals. Therefore, further studies tracing the impact of the supra-national EU policy framework at lower governance levels are vital.

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  • 317.
    Sahlström, Fredrik
    et al.
    UiT Arctic Univ Norway, Dept Geosci, N-9037 Tromso, Norway.;Pontificia Univ Catolica Peru, Geol Engn Program, San Miguel 15088, Peru..
    Troll, Valentin R.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Palinkas, Sabina Strmic
    UiT Arctic Univ Norway, Dept Geosci, N-9037 Tromso, Norway.;Univ Bergen, Ctr Deep Sea Res, Dept Earth Sci, N-5007 Bergen, Norway..
    Kooijman, Ellen
    Swedish Museum Nat Hist, Dept Geosci, S-11418 Stockholm, Sweden..
    Zheng, Xin-Yuan
    Univ Minnesota Twin Cities, Dept Earth & Environm Sci, Minneapolis, MN 55455 USA..
    Iron isotopes constrain sub-seafloor hydrothermal processes at the Trans-Atlantic Geotraverse (TAG) active sulfide mound2022Inngår i: Communications Earth & Environment, E-ISSN 2662-4435, Vol. 3, artikkel-id 193Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Iron isotopic equilibration at the Trans-Atlantic Geotraverse hydrothermal field takes place over tens of thousands of years, with variable degrees of hydrothermal maturation throughout the active mound, according to iron isotope analyses of sulfide minerals. Sub-seafloor hydrothermal processes along volcanically active plate boundaries are integral to the formation of seafloor massive sulfide deposits and to oceanic iron cycling, yet the nature of their relationship is poorly understood. Here we apply iron isotope analysis to sulfide minerals from the Trans-Atlantic Geotraverse (TAG) mound and underlying stockwork, 26 degrees N Mid-Atlantic Ridge, to trace hydrothermal processes inside an actively-forming sulfide deposit in a sediment-free mid-ocean ridge setting. We show that data for recently formed chalcopyrite imply hydrothermal fluid-mound interactions cause small negative shifts (<-0.1 parts per thousand) to the delta Fe-56 signature of dissolved iron released from TAG into the North Atlantic Ocean. Texturally distinct types of pyrite, in turn, preserve a delta Fe-56 range from -1.27 to +0.56 parts per thousand that reflects contrasting precipitation mechanisms (hydrothermal fluid-seawater mixing vs. conductive cooling) and variable degrees of progressive hydrothermal maturation during the >20 kyr evolution of the TAG complex. The identified processes may explain iron isotope variations found in fossil onshore sulfide deposits.

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  • 318.
    Salas Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Analysis of seismic data and correlation with downhole geophysical measurements in theassessment of a Swedish area prone to quick clay landslides2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The use of geophysics in the investigation of quick claylandslides in Sweden allows to obtain information about thepresence, and possibly even the origin of these kinds ofclays and their physical properties. Geophysical methodsare non-invasive and non-destructive, and if complementedby, for example, geotechnical and hydrologicalinvestigations, can allow a better and improvedcharacterization of the target area.Downhole geophysical measurements such as naturalgamma density, fluid conductivity, fluid temperature and apreliminary classification of the samples from threeboreholes are presented here from our GeoscientistsWithout Borders project in southwestern Sweden. Themeasurements allow not only the constraining of the originof reflections in nearby seismic lines, but also improve ourunderstanding about the way quick clay landslides function.This knowledge contributes significantly to quick claylandslide assessments and mitigating the risks associatedwith them.

  • 319.
    Salas Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Dessirier, Benoît
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära. Physical geography, Stockholm University.
    Subsurface Characterization of a Quick-Clay Vulnerable Area Using Near-Surface Geophysics and Hydrological Modelling2019Inngår i: Solid Earth, ISSN 1869-9510, E-ISSN 1869-9529, Vol. 10, nr 5, s. 1685-1705Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Quick-clay landslides are common geohazards in Nordic countries and Canada. The presence of potential quick clays is confirmed using geotechnical investigations, but near-surface geophysical methods, such as seismic and resistivity surveys, can also help identify coarse-grained materials associated with the development of quick clays. We present the results of reflection seismic investigations on land and in part of the Göta River in Sweden, along which many quick-clay landslide scars exist. This is the first time that such a large-scale reflection seismic investigation has been carried out to study the subsurface structures associated with quick-clay landslides. The results also show a reasonable correlation with radio magnetotelluric and travel-time tomography models of the subsurface. Other ground geophysical data, such as high magnetic values, suggest a positive correlation with an increased thickness of the coarse-grained layer and shallower depths to the top of the bedrock and the top of the coarse-grained layer. The morphology of the river bottom and riverbanks, e.g. subaquatic landslide deposits, is shown by side-scan sonar and bathymetric data. Undulating bedrock, covered by subhorizontal sedimentary glacial and postglacial deposits, is clearly revealed. An extensive coarse-grained layer (P-wave velocity mostly between 1500 and 2500 ms-1 and resistivity from approximately 80 to 100 Ωm) exists within the sediments and is interpreted and modelled in a regional context. Several fracture zones are identified within the bedrock. Hydrological modelling of the coarse-grained layer confirms its potential for transporting fresh water infiltrated in fractures and nearby outcrops located in the central part of the study area. The modelled groundwater flow in this layer promotes the leaching of marine salts from the overlying clays by seasonal inflow–outflow cycles and/or diffusion, which contributes to the formation of potential quick clays.

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  • 320.
    Salas-Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Combined land and river high-resolution reflection seismic imaging of an area prone to quick-clay landslides in Sweden2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Quick-clay landslides are common in northern countries and the delineation of these materials is important when planning urban areas. High-resolution reflection seismic data were acquired on land along four profiles in an area prone to quick-clay landslides in southwest Sweden in 2013. These data complement previous investigations that show the influence of the underlying coarse-grained layers in the formation and thickness of the quick clays. The intercalation of the different glacial and postglacial sediments, and the structural information of the subsurface provide clues to the possible causes of a landslide. Apart from the land data, river seismic data, using one and six channels, were obtained. All the seismic sections show a clear undulating bedrock reflection, and signs of bedrock faults at shallower depth that maybe important in the generation of quick clays and landslides. The coarse-grained layer reflection is delineated on the land data, and several filled channels can be distinguished along the river. The presence of the coarse-grained layer indicates the possible large extension of the quick clays in the study area, which needs to be confirmed using geotechnical investigations.

  • 321.
    Salas-Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Brodic, Bojan
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Geotechnical site characterization using multichannel analysis of surface waves: A case study of an area prone to quick-clay landslides in southwest Sweden2021Inngår i: Near Surface Geophysics, ISSN 1569-4445, E-ISSN 1873-0604, Vol. 19, nr 6, s. 699-715Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Quick-clay landslides are important geohazards in Sweden, Norway and Canada. While they have been studied using various geotechnical and geophysical methods, only a handful of seismic surveys have been reported for their studies. Here, we reprocess active-source seismic data from a quick-clay landslide site in southwest Sweden to complement earlier studies of reflection imaging and first-break traveltime tomography with surface-wave dispersion analysis. Results suggest extremely low shear-wave velocities, even as low as 60–100 m/s. From a geotechnical perspective, this implies that the region classifies as a high-risk zone for landslides and construction purposes. High or anomalous values of Poisson's ratio (or similarly P- and S-wave velocity ratio) depict a zone within the normally consolidated sediments that likely represents a coarse-grained layer, thus confirming earlier results from a number of boreholes drilled in the study area. Overall, the results presented further support to the previous hypothesis that the coarse-grained layer plays a major role in the formation and creation of quick-clay landslides in the study area. Additionally, an attempt to model the distribution of potential quick clays along one of the seismic profiles is performed through a combination of the modelled geophysical properties and soil textures. This study illustrates the potential of seismic methods, and how the integration of multiple geophysical properties and different data handling strategies can help to accurately characterize regions susceptible to quick-clay landslides.

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  • 322.
    Salas-Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Brodic, Bojan
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Geotechnical Site Characterization Using Multichannel Analysis of Surface Waveṣ–A Case Study of an Area Prone to Quick-Clay Landslides in Southwest SwedenManuskript (preprint) (Annet vitenskapelig)
  • 323.
    Salas-Romero, Silvia
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Malehmir, Alireza
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Lougheed, Bryan
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Hellqvist, Magnus
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Paleobiologi.
    Identifying landslide preconditions in Swedish quick clays - insights from integration of surface geophysical, core sample- and downhole property measurements2016Inngår i: Landslides: Journal of the International Consortium on Landslides, ISSN 1612-510X, E-ISSN 1612-5118, Vol. 13, nr 5, s. 905-923Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Quick-clay landslides are a serious geohazard in Canada, Norway and Sweden. Identification and mapping of quick clays are essential endeavours because the damage caused by an individual landslide can be large and costly, with potentially fatal consequences. We collected geophysical borehole and soil core data from an area prone to quick-clay landslides in southwestern Sweden. Methodologies included in situ and laboratory measurements, providing information about natural gamma radiation, sonic velocities, electrical conductivity, pH, physical grain size, elemental and mineral composition, magnetic properties, cation exchange capacity and fossil content. A stratigraphic thickness of almost 60 m enables us to study quick clays and their host environment in Sweden at unusually high resolution. Results identify the origin and location of reflections in nearby seismic lines and assign physico-chemical properties to the geological units present in the area. We show that coarse-grained layers are sandwiched between marine clays (some of which are quick clays). These layers function as a conduit for relatively fresh water that infiltrates the marine clays and chemically destabilizes them by leaching out their salts. The salinity distribution in the boreholes indicate that the groundwater movement is downwards, through the coarse-grained layer and towards the Gota river. The presence of these materials is important for the development of quick clays, although not a prerequisite. With the help of surface geophysical methods, the location of the coarse-grained layers can be known faster and more economically, which could be relevant for studying the potential for quick-clay landslide occurrence over large areas.

  • 324.
    Sallh, David
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Wachtmeister, Henrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Tang, Xu
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Offshore oil: Investigating production parameters of fields of varying size, location and water depth2015Inngår i: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 139, s. 430-440Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper derives empirical estimates of field depletion level, depletion rate, decline rate and characteristic time intervals in offshore oil production based on a global field-by-field database containing 603 offshore oil fields. Statistical distributions as well as arithmetic and weighted averages of production parameters are derived for different categories of fields specified by size, location and water depth. A significant tendency of small fields having higher depletion and decline rates is found. Similarly, OECD countries generally have higher rates compared to non-OECD countries. Trends related to water depth are not clearly distinguishable and require additional investigation of time related aspects. Resulting spreads in derived parameter estimates are found to be well described by positively skewed probability distributions. Also, in line with theory, a strong correlation between depletion and decline rate is found. According to the study, the net share of global offshore production from smaller and deeper fields is increasing. A continuation of these trends would likely have implications for future aggregate offshore production behaviour, most notably, increasing global aggregate decline rates.

  • 325.
    Sassenhagen, Ingrid
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Limnologi.
    Erdner, Deana L.
    Univ Texas Austin, Inst Marine Sci, Port Aransas, TX USA..
    Lougheed, Bryan C.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Paleobiologi.
    Richlen, Mindy L.
    Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA..
    Sjoqvist, Conny
    Abo Akad Univ, Environm & Marine Biol, Turku, Finland..
    Estimating genotypic richness and proportion of identical multi-locus genotypes in aquatic microalgal populations2022Inngår i: Journal of Plankton Research, ISSN 0142-7873, E-ISSN 1464-3774, Vol. 44, nr 4, s. 559-572Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The majority of microalgal species reproduce asexually, yet population genetic studies rarely find identical multi-locus genotypes (MLG) in microalgal blooms. Instead, population genetic studies identify large genotypic diversity in most microalgal species. This paradox of frequent asexual reproduction but low number of identical genotypes hampers interpretations of microalgal genotypic diversity. We present a computer model for estimating, for the first time, the number of distinct MLGs by simulating microalgal population composition after defined exponential growth periods. The simulations highlighted the effects of initial genotypic diversity, sample size and intraspecific differences in growth rates on the probability of isolating identical genotypes. We estimated the genotypic richness for five natural microalgal species with available high-resolution population genetic data and monitoring-based growth rates, indicating 500 000 to 2 000 000 distinct genotypes for species with few observed clonal replicates (<5%). Furthermore, our simulations indicated high variability in genotypic richness over time and among microalgal species. Genotypic richness was also strongly impacted by intraspecific variability in growth rates. The probability of finding identical MLGs and sampling a representative fraction of genotypes decreased noticeably with smaller sample sizes, challenging the detection of differences in genotypic diversity with typical isolate numbers in the field.

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  • 326.
    Schulz, Sven Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, CEMUS. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling, CEMUS Research Forum, CEFO.
    Ekokritik: naturen i litteraturen2021Collection/Antologi (Annet vitenskapelig)
    Abstract [sv]

    Antologin Ekokritik: naturen i litteraturen samlar för första gången aktuell svensk ekokritisk forskning och vill därmed presentera det internationellt växande ämnet ekokritik för en svensk publik. Den har sitt ursprung i den doktorand- och magisterkurs Ekokritik – naturen i litteraturen som gavs av CEMUS, Centrum för miljö- och utvecklingsstudier vid Uppsala universitet och SLU, hösten 2005. Essäerna tar avstamp i denna kurs innehåll såsom den presenterades både av föreläsarna och i deltagarnas analyserande artiklar. De visar prov på en stor bredd när det gäller genre, val av analytiskt tillvägagångssätt och teoretiskt ramverk. Så finns här samlade analyser av film, poesi och skönlitteratur ur olika epoker och olika problematiseringar av vad natur är och hur den representeras i texten. I sin helhet visar essäerna på det ekokritiska fältets teoretiska möjligheter och lämnar förhoppningsvis ett bidrag till en djupare förståelse av relationen mellan natur, kultur och text.

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  • 327.
    Schwab, Julia
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Undermining the Local: Power, Acceptance, and Confidence surrounding a Chilean Mining Operation: Social Impacts of the Mining Operation Los Pelambres on the Cuncumén Community2020Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    The present ethnographic research explores the socio-economic repercussions of a copper mining operation in Chile on its host community. By examining the development of the relationship between this local community and the mining company since the latter’s arrival, this thesis sheds light on the possible (secondary) impacts of corporate social responsibility (CSR) measures and participatory spaces on intracommunal dynamics. Previous work has emphasized that enduring relationships involving participatory decision-making are crucial to build up trust and acceptance towards mining operations. However, these studies have not sufficiently focused on how such participatory mechanisms and ‘friendly’ relationships play out within the communities, on an intracommunal level. This research has addressed this gap by conducting an ethnographic fieldwork in a local community and capturing the community member’s view on the role of the mining company and their CSR measures for them and their community as a whole. This thesis found that the troublesome past with the mining operation has damaged the host community’s trust and acceptance in the involved mining companies. While disappointment and distrust were carried into more recent negotiations, community members also build up confidence and hope for a more harmonious relationship bearing new opportunities for their community. However, tracing back the history between the local community and the mining company, the thesis found that relations between the mining company and locals oscillated between protest against and dialogue. This shows that while (in-) direct economic benefits are recognized and appreciated, detrimental environmental impacts are not overlooked and still denounced. Furthermore, the rather corporate- than community-centered approach of the mining company’s CSR is criticized because it (1) neglects the common good, and (2) treats some groups/individuals in the community as more entitled to receive benefit than others. A general lack of reflection on the part of the mining company is attested: the mining company’s CSR leads to unwanted intracommunal discontent. The majority of the community leaders have full-time jobs and other obligations in addition to the time-consuming roles and related engagement on behalf of the community. On top of that, they lack sufficient support and participation of other community members to advance the work in the participatory spaces more efficiently and address the shortcomings of the commitments of the mining company accurately. However, there are historical reasons, rumors about corruption related to the mining company, and a violent discussion culture which step by step lead to a withdrawal of many community members from participating. In general, distrust, disunity, and disinformation dominate the atmosphere when it comes to the participatory spaces – but also more and more when it comes to community life itself. This in turn was observed to be both a product of and precondition for a prevailing victim mentality among the community which is characterized by demotivation, passivity, and pessimism. Valuable energy is trapped in a vicious circle rather than channeled towards action: there is no unified effort to address the problems on a community-mine level, the community stays overwhelmed, and in turn, has a hard time focusing and targeting the different issues they are facing systematically.

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  • 328.
    Seidenkrantz, Marit-Solveig
    et al.
    Aarhus Univ, Dept Geosci, Hoegh Guldbergs Gade 2, DK-8000 Aarhus C, Denmark.
    Kuijpers, Antoon
    Geol Survey Denmark & Greenland GEUS, Oster Voldgade 10, DK-1350 Copenhagen K, Denmark.
    Olsen, Jesper
    Aarhus Univ, Dept Phys & Astron, Aarhus AMS Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark.
    Pearce, Christof
    Aarhus Univ, Dept Geosci, Hoegh Guldbergs Gade 2, DK-8000 Aarhus C, Denmark.
    Lindblom, Sofia
    Univ Gothenburg, Dept Earth Sci, Gothenburg, Sweden.
    Ploug, Johan
    Aarhus Univ, Dept Geosci, Hoegh Guldbergs Gade 2, DK-8000 Aarhus C, Denmark;DJ Miljo & Geotekn, Falkevej 12, DK-3400 Hillerod, Denmark.
    Przybylo, Piotr
    Aarhus Univ, Dept Geosci, Hoegh Guldbergs Gade 2, DK-8000 Aarhus C, Denmark;25 Coleherne Rd, London SW10 9BS, England.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Southwest Greenland shelf glaciation during MIS 4 more extensive than during the Last Glacial Maximum2019Inngår i: Scientific Reports, E-ISSN 2045-2322, Vol. 9, artikkel-id 15617Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Although geological and modelling evidence indicate that the last glacial inception in North America was in NE Canada, little is known about the glacial response of the nearby western Greenland Ice Sheet (GIS) during the glacial advance of marine oxygen isotope stage 4 (MIS4). Our multi-proxy study of a marine sediment core collected about 60 km southwest of the Outer Hellefisk Moraines demonstrates that in the southern Davis Strait region the most extreme Greenland shelf glaciation of the last glacial cycle occurred during MIS 4, with another prominent glacial advance at 37-33 kyr BP. During those periods the GIS likely reached the Outer Hellefisk Moraines in this area. Except for these two periods, our data suggest significant advection of relatively warm Irminger Sea Water by the West Greenland Current since MIS 4. This advection likely limited the extent of the MIS2 glaciation on the SW Greenland shelf. Decreased precipitation over southwestern Greenland predicted by atmospheric models as a downstream effect of a much larger MIS2 Laurentide Ice Sheet may have played an additional role.

    Fulltekst (pdf)
    FULLTEXT01
  • 329.
    Shephard, G. E.
    et al.
    Univ Oslo, Dept Geosci, CEED, Oslo, Norway.
    Wiers, Steffen
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Bazhenova, Evgenia
    Univ New Hampshire, Ctr Coastal & Ocean Mapping, Durham, NH 03824 USA;St Petersburg State Univ, Inst Earth Sci, St Petersburg, Russia.
    Perez, Lara F.
    Geol Survey Denmark & Greenland GEUS, Dept Geophys, Copenhagen, Denmark.
    Mejia, Luz Maria
    ETH, Dept Earth Sci, Geol Inst, Zurich, Switzerland.
    Johansson, Carina
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden.
    Jakobsson, Martin
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden.
    O'Regan, Matt
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden.
    A North Pole thermal anomaly?: Evidence from new and existing heat flow measurements from the central Arctic Ocean2018Inngår i: Journal of Geodynamics, ISSN 0264-3707, E-ISSN 1879-1670, Vol. 118, s. 166-181Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Constraining the thermal evolution of the Arctic Ocean is hampered by notably sparse heat flow measurements and a complex tectonic history. Previous results from the Lomonosov Ridge in the vicinity of the North Pole, and the adjacent central Amundsen Basin reveal varied values, including those higher than expected considering plate cooling or simple uniform stretching models. Furthermore, in the vicinity of the North Pole an anomalously slow velocity perturbation exists in upper mantle seismic tomography models. However, whether these observations are related to a thermal anomaly in the mantle remains unknown. We present new heat flow results gathered from 17 sediment cores acquired during the "Arctic Ocean 2016" and "SWERUS-C3" expeditions on the Swedish icebreaker Oden. Three sites located on oceanic lithosphere in the Amundsen Basin between 7 degrees W-71E degrees reveal surface thermal conductivity of 1.07-1.26 W/mK and heat flow in the order of 71-95 mW/m(2), in line-with or slightly higher (1-21 mW/m(2)) than expected from oceanic heat flow curves. These results contrast with published results from further east in the Amundsen Basin, which indicated surface heat flow values up to 2 times higher than predicted from oceanic crustal cooling models. Heat flow of 49-61 mW/m(2) was recovered from the Amerasia Basin. Sites from the submerged continental fragments of the Lomonosov Ridge and Marvin Spur recovered heat flow in the order of 53-76 and 51-69 mW/m(2) respectively. When considering the additional potential surface heat flux from radiogenic heat production in the crust, these variable measurements are broadly in line with predictions from uniform extension models for continental crust. A seismically imaged upper mantle velocity anomaly in the central Arctic Ocean may arise from a combination of compositional and thermal variations but requires additional investigation. Disentangling surface heat flow contributions from crustal, lithospheric and mantle processes, including variable along-ridge rifting rates and timing, density and phase changes, conductive and advective dynamics, and regional tectonics, requires further analysis.

  • 330.
    Shi, Bohan
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    A study on the sustainability of rural ecotourism in Nanjing, Jiangsu Province, China2023Independent thesis Advanced level (degree of Master (Two Years)), 80 poäng / 120 hpOppgave
    Abstract [en]

    China has always been a major agricultural country with the highest number of agricultural workers in the world. In order to raise the income level of farmers and promote rural prosperity and stability, the 19th National Congress of the Communist Party of China put forward the strategy of "revitalising the countryside", and focused on the development of rural tourism as a strategy that can effectively adapt to and serve the revitalisation of the countryside in the new era. The development of rural tourism in recent years has met people's needs and has become an important part of China's tourism development industry. Nanjing, as the capital of Jiangsu Province, has developed new tourism projects in more and more surrounding villages. Although the number of rural tourism attractions has been increased, there are still many problems with the development of these attractions, including the impact of project development on the environment and the standardization of rural tourism facilities, which still need to be given high priority by relevant tourism construction researchers. Based on this, this paper examines the current situation of rural tourism development around Nanjing, and conducts a survey and analysis of Nanjing's ecotourism development based on a tourist demand perspective. Through the comparison, it is found that the development factors of rural tourism around Nanjing include government, human environment, geographical location, tourism construction direction and market condition, etc. Therefore, the study of rural tourism development problems around Nanjing needs to be combined with the actual situation of Nanjing and an in-depth study of the direct factors related to tourism in order to improve the rural tourism development problems.

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  • 331. Sitoe, Sandra Raul
    et al.
    Risberg, Jan
    Norstrom, Elin
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Holmgren, Karin
    Achimo, Mussa
    Mugabe, Joao
    Pa leo-environment and flooding of the Limpopo River-plain, Mozambique, between c. AD 1200-20002015Inngår i: Catena (Cremlingen. Print), ISSN 0341-8162, E-ISSN 1872-6887, Vol. 126, s. 105-116Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Multi-proxy analysis was performed on a radiocarbon-dated core, collected from a relic oxbow lake in the Limpopo River-plain, Mozambique, with the aim to reconstruct paleo-environment and past flooding of the lower river system over the past c. 800 years. An additional objective was to evaluate and investigate the potential use of different proxies as recorders of paleo-flooding events and paleo-environmental variability within the floodplain. The proxies applied in this study were: mineral magnetic properties, grain-size distribution, organic carbon content and diatom microfossil assemblages. We found that sediment grain-size and mineral magnetic properties of the minerogenic fraction were the most sensitive proxies in terms of detecting signals from high-intensity river-discharge events. In the 800 year long sequence, variations in sand content, magnetic susceptibility and saturation isothermal remnant magnetization suggest at least four major flooding events at the site during the reconstructed period; in the mid-1200, late-1300, mid-1500 AD and during the last century. The diatom proxy reflects the development of the site from an open oxbow lake to a mainly terrestrial area. The diatom assemblage indicates that open lake conditions prevailed at the site between c. AD 1200-1400, with periodic inundation by marine water, most likely due to late Holocene sea-level changes. From c. AD 1400 and onwards, diatoms were rarely deposited at the site, which indicates drier conditions. This was a result of soil formation and gradual in-filling of the lake, a process which possibly was accentuated by a regionally dry climate situation. Our study shows that oxbow lakes and the proxies used here have great potential for reconstructing flooding events, a knowledge that is crucial for potential prediction and mitigation of flooding events in Mozambique in the future. Although chronological uncertainties limit comparisons to other paleo-environmental records, it seems that the flooding events recorded at our site occurred both during regionally wet and dry periods. Our data infer however, that flooding was probably more clearly recorded during the lake-stages than during infilled stage, probably as the terrestrial environment was more exposed to erosion. 

  • 332. Smith, A.C.
    et al.
    Harrison, P.A.
    Pérez Sobac, M.
    Archauxd, F.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Swedish Biodiversity Centre.
    Egoh, B.
    Erős, T.
    Fabrega Domenech, N.
    György, A.
    Haines-Young, R.
    Li, S.
    Lommelen, E.
    Meiresonne, L.
    Miguel Ayala, L.
    Mononen, L.
    Simpson, G.
    Stange, E.
    Turkelboomh, F.
    Uiterwijk, M.
    Veerkamp, C.J.
    Wyllie de Echeverria, V.
    How natural capital delivers ecosystem services: a typology derived from a systematic review2017Inngår i: Ecosystem Services, ISSN 2212-0416, E-ISSN 2212-0416, Vol. 26, s. 111-126Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    There is no unified evidence base to help decision-makers understand how the multiple components of natural capital interact to deliver ecosystem services. We systematically reviewed 780 papers, recording how natural capital attributes (29 biotic attributes and 11 abiotic factors) affect the delivery of 13 ecosystem services. We develop a simple typology based on the observation that five main attribute groups influence the capacity of natural capital to provide ecosystem services, related to: A) the physical amount of vegetation cover; B) presence of suitable habitat to support species or functional groups that provide a service; C) characteristics of particular species or functional groups; D) physical and biological diversity; and E) abiotic factors that interact with the biotic factors in groups A-D. ' Bundles' of services can be identified that are governed by different attribute groups. Management aimed at maximising only one service often has negative impacts on other services and on biological and physical diversity. Sustainable ecosystem management should aim to maintain healthy, diverse and resilient ecosystems that can deliver a wide range of ecosystem services in the long term. This can maximise the synergies and minimise the trade-offs between ecosystem services and is also compatible with the aim of conserving biodiversity.

  • 333.
    Smithers, Richard J.
    et al.
    Ricardo Energy & Environm, Harwell OX11 0QR, Oxon, England.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Swedish Biodiversity Centre.
    Indirect impacts of climate change2016Inngår i: Science, Vol. 354, nr 6318, s. 1386-1386Artikkel i tidsskrift (Annet vitenskapelig)
  • 334. Smithers, Richard J.
    et al.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Swedish Biodiversity Centre.
    Laurance, William F.
    Biodiversity Boundaries2016Inngår i: Science, Vol. 353, nr 6304, s. 1108-Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 335.
    Smithers, Richard J.
    et al.
    Ricardo Energy & Environm, Harwell, Berks, England.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Maria Gutiérrez, José
    Univ Costa Rica, San Jose, Costa Rica.
    Inequality: span the global divide2016Inngår i: Nature, Vol. 539, s. 31-31Artikkel i tidsskrift (Annet vitenskapelig)
  • 336.
    Smithers, Richard J.
    et al.
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Doick, Kieron J.
    Forest Res, Farnham GU10 4LH, Surrey, England.
    Burton, Aaron
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Sibille, Raphael
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Steinbach, David
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Harris, Rachel
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Groves, Lisa
    Ricardo Energy & Environm, Gemini Bldg,Fermi Ave, Didcot OX11 0QR, Oxon, England.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Comparing the relative abilities of tree species to cool the urban environment2018Inngår i: Urban Ecosystems, ISSN 1083-8155, E-ISSN 1573-1642, Vol. 21, nr 5, s. 851-862Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Increasing urbanisation poses numerous challenges to human quality of life. Cities are particularly vulnerable to the urban heat-island effect, which will be amplified by climate change. Increasing tree cover may be one of the most cost-effective ways of moderating urban temperatures. Trees cool their surroundings by casting shade, reflecting solar radiation, transpiring, and intercepting rainfall that subsequently evaporates. However, the potential of trees to reduce the urban heat-island effect is underutilised. The aim of this study was to synthesise understanding of the relative abilities of different tree species to provide urban cooling in temperate regions of the world and thereby develop a pragmatic approach for choosing those trees that have greatest potential in that regard. Based on a literature review and semi-structured interviews with leading experts, we developed a series of scenarios to illustrate the impacts of a tree's cooling mechanisms and tree species' attributes on components of the surface-energy balance equation. This enabled us to select parameters and propose simple equations that can be used to compare the relative abilities of tree species in relation to each of the cooling mechanisms. The parameters selected were for: transpiration - crown diameter, Leaf Area Index (LAI), canopy aspect ratio, and stomatal conductance or growth rate; reflection - albedo, crown diameter and LAI; shading - canopy aspect ratio, crown diameter, LAI and tree height. The approach is intended for use by urban planners and managers who wish to make informed decisions about which tree species to select for planting to counter the urban heat-island effect.

  • 337.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Is the Hilina Pali ‘palaeomagnetic excursion’ becoming another example of the reinforcement syndrome? A comment inspired by Nawrocki et al. (2018)2018Inngår i: Boreas, ISSN 0300-9483, E-ISSN 1502-3885, Vol. 47, nr 3, s. 967-968Artikkel i tidsskrift (Fagfellevurdert)
  • 338.
    Snowball, Ian
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Almqvist, Bjarne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Geofysik.
    Lougheed, Bryan C.
    Wiers, Steffen
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Obrochta, Stephen
    Herrero-Bervera, Emilio
    Coring induced sediment fabrics at IODP Expedition 347 Sites M0061 and M0062 identified by anisotropy of magnetic susceptibility (AMS): criteria for accepting palaeomagnetic data2019Inngår i: Geophysical Journal International, ISSN 0956-540X, E-ISSN 1365-246X, Vol. 217, nr 2, s. 1089-1107Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Anisotropy of magnetic susceptibility data obtained from discrete subsamples recovered from two Integrated Ocean Drilling Program sites (Expedition 347 sites M0061 and M0062 in the Baltic Sea) by an Advanced Piston Corer are compared to results obtained on subsamples recovered by replicate 6-m-long Kullenberg piston cores. Characteristic natural remanence directions were obtained from the total of 1097 subsamples using principal component analyses. The three principal anisotropy axes of subsamples taken from Advanced Piston Core liners align to the subsample axes, with the maximum axis (K1) parallel to the split core surfaces, possibly caused by outwards relaxation of the core-liners after splitting. A second anomalous anisotropy fabric is characterized by steep values of the angular difference between the inclination of the minimum anisotropy axes (K3) and that expected for horizontal bedding (90°). This fabric is confined to the upper 1–2 m of the Kullenberg cores and specific sections of the advanced piston cores, and we attribute it to conical deformation caused by either excessive penetration speeds and downwards dragging of sediment along the edge of the liner or stretching caused by undersampling. By using our data in an example, we present a protocol to accept palaeomagnetic secular variation data that uses (i) a threshold 90-K3 value of 15°, combined with a modelled, locally applicable minimum inclination of 65° and (ii) an A95 cone of confidence based on Fisher statistics applied to virtual geomagnetic pole distributions.

    Fulltekst (pdf)
    fulltext
  • 339.
    Snowball, Ian
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Apler, Anna
    Sveriges Geologiska Undersökning.
    Till botten med gamla synder2015Inngår i: Havsutsikt, ISSN 1104-0513, Vol. 2, s. 18-20Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 340.
    Snowball, Ian
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Apler, Anna
    Sveriges Geologiska Undersökning.
    Till botten med gamla synder2015Inngår i: Havsutsikt, ISSN 1104-0513, nr 2, s. 18-20Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 341.
    Snowball, Ian
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Hounslow, Mark W.
    Nilsson, Andreas
    Geomagnetic and mineral magnetic characterization of the Anthropocene2014Inngår i: Stratigraphical Basis for the Anthropocene / [ed] Waters, CN; Zalasiewicz, JA; Williams, M; Ellis, M; Snelling, AM, Geological Society of London, 2014, Vol. 395, s. 119-141Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Geomagnetic and mineral magnetic data provide geological indices that are both independent of human impact (i.e. geomagnetic) and respond to human-induced environmental impact (i.e. mineral magnetic). We provide the first discussion of such magnetic events for help in defining the Anthropocene. Within the Holocene, a potential geomagnetic marker for the Anthropocene is the low dipole latitude at c. 2700 cal a BP, which is associated with distinct palaeosecular variation features in northerly mid-to high-latitude sites. Mineral magnetic records from lake and marine sediments identify major deforestation and soil delivery events from catchment systems in many parts of the world during the last 4000 years. In Europe, clusters of these events occur around both 2600 cal a BP and AD 1100, the former coinciding with a low in geomagnetic field dipole latitude and peak intensity. Mineral magnetic records in peats and lake sediments can reflect particulate pollution from fossil fuel burning. The expansion of major coal burning began c. AD 1800 in western Europe and eastern North America, but around AD 1900 this expanded due to more widely distributed coal use, and this event is the most clear mineral magnetic marker for the base of the Anthropocene.

  • 342.
    Sowunmi, Akinleye
    et al.
    Masdar Inst Sci & Technol, Inst Ctr Energy iENERGY, Abu Dhabi, U Arab Emirates..
    Mamone, Richard Michael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Masdar Inst Sci & Technol, Inst Ctr Energy iENERGY, Abu Dhabi, U Arab Emirates..
    Bastidas-Oyanedel, Juan-Rodrigo
    Masdar Inst Sci & Technol, Inst Ctr Energy iENERGY, Abu Dhabi, U Arab Emirates..
    Schmidt, Jens Ejbye
    Masdar Inst Sci & Technol, Inst Ctr Energy iENERGY, Abu Dhabi, U Arab Emirates..
    Biogas potential for electricity generation in the Emirate of Abu Dhabi2016Inngår i: BIOMASS CONVERSION AND BIOREFINERY, ISSN 2190-6815, Vol. 6, nr 1, s. 39-47Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In 2009, the Government of Abu Dhabi made a commitment to generate 7 % of its total power output from renewable sources of energy by 2020. Biomethane is considered a viable option in accomplishing this goal. The objective of this work is to estimate the biogas to electricity potential from nine different biomasses found in the Emirate of Abu Dhabi, i.e., sheep dung, goat dung, cattle dung, camel dung, print paper, newspaper, carton paper, food waste, and animal waste blood. These biomasses are considered waste, and they were selected for their organic content and relative abundance in the Emirate. The objective was accomplished through experimental work measuring the biomethane potential of the nine biomasses and the estimation of their availability in the Emirate. Food waste had the highest biomethane potential yield of 517.36 mL-CH4/g-VSadded at standard conditions of temperature and pressure (STP), while newspaper had the lowest yield of 76.6 mL-CH4/g-VSadded STP, despite its high cellulose content. Varying levels of inhibition were also observed across the biomasses. An estimation of the total biomethane potential showed that the nine biomasses are able to provide 6 % of domestic electricity use in Abu Dhabi Emirate and 1.9 % of renewable energy commitment, with food waste contributing the highest fraction (51 %) and paper waste having the highest specific electricity potential (0.94 kWh/t).

  • 343.
    Stabinsky, Doreen
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Coll Atlantic, Global Environm Polit, Uppsala, Sweden..
    Teaching and Practicing Climate Politics at College of the Atlantic: Student-inspired, Student-driven2015Inngår i: RADICAL TEACHER, ISSN 1941-0832, nr 102, s. 24-29Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
    FULLTEXT01
  • 344.
    Stenfors, Elin
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Grabs, Thomas
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära.
    Teutschbein, Claudia
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten- och landskapslära.
    Droughts in forested ecoregions in cold and continental climates: A review of vulnerability concepts and factors in socio-hydrological systems2023Inngår i: WIREs Water, E-ISSN 2049-1948, artikkel-id e1692Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In a changing climate, drought risk and vulnerability assessments are becoming increasingly important. Following the global call for proactive drought risk management, drought vulnerability assessments are progressively taking their stage in the drought research community. As the manifestation of drought vulnerability is dependent on the social, ecological, and hydroclimatic context in which it occurs, identifying vulnerability factors relevant for specific climatological and ecological regions may improve the quality of vulnerability assessments. Meanwhile, a holistic overview of factors affecting vulnerability in polar and cold climates is currently lacking. These regions are home to large socio-hydrological systems including urban areas, energy systems, agricultural practices, and the boreal forest. By conducting an interdisciplinary systematic literature review, the manifestation and conceptualization of drought vulnerability were identified for forested ecoregions in the Köppen–Geiger D and E climates. Vulnerability factors, as described by several scientific disciplines, were identified and combined into a conceptual framework for drought vulnerability in the study region. The results demonstrate the wide range of conceptualizations that exist for assessing drought vulnerability, and the thematic differences between sectors such as forestry, water supply, and agriculture. The conceptual framework presented herein adopts a novel approach, categorizing vulnerability factors by their location in a socio-hydrological system, and their relation to blue or green water sources. This allowed for identification of systemic vulnerability patterns, providing new insights into regional differences in drought vulnerability and a base for stakeholders performing proactive drought risk assessments in the study region.

    Fulltekst (pdf)
    fulltext
  • 345.
    Stiepani, Johann
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Changing Coastlines of the Indo-Pacific: Local livelihoods and use of ecosystem resources from a social-ecological systems perspective2024Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This thesis analyzes the impacts of global environmental change upon the interactions and connections between coastal ecosystems and small-scale fishers. The analysis builds on social and ecological data, obtained in four locations including: Unguja Ukuu, Zanzibar (Paper I); Malalison island, the Philippines (Paper II); Batan, the Philippines (Paper III); and Penang, Malaysia (Paper IV). Each of these locations is currently impacted by processes of global environmental change that challenge the sustainability of local livelihoods based on natural capital. These processes of global environmental change include environmental degradation (Papers I-III), and mangrove degradation due to land use change (Papers III-IV). Papers I-II focus on gleaning as a specific example of a coastal livelihood and found that gleaners over time struggle with local declines of the species they target. In Paper II gleaning was found to be important as a supplemental livelihood activity when local people were unable to perform regular SSF livelihood activities due to disturbances caused by e.g. typhoons. Environmental degradation was also present within the multi gear SSF at Batan (Paper III) within the mangrove estuary. Within the context of both Papers III-IV land use change fragmented the coastal ecosystems which likely impacted the biodiversity and structure of a mangrove forests. In conclusion, this thesis highlights an array of stressors that threaten these social-ecological system of small-scale fishing villages, in particular their coastal ecosystems found at their fringe. This work confirms the importance for local coastal management to understand different components of a SES to strengthen local livelihood security. Future work and management of these coastlines and livelihoods that are based on their environments need both ecological and social data to enable sound management. Alternative livelihoods could be one strategy to reduce dependency of livelihoods on SSF.

    Delarbeid
    1. Social-ecological system analysis of an invertebrate gleaning fishery on the island of Unguja, Zanzibar
    Åpne denne publikasjonen i ny fane eller vindu >>Social-ecological system analysis of an invertebrate gleaning fishery on the island of Unguja, Zanzibar
    2023 (engelsk)Inngår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 52, nr 1, s. 140-154Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Invertebrate gleaning is a small-scale fishery that commonly occurs in the intertidal zone across the tropical Indo-Pacific. In this study, we investigated and analyzed several components of this fishery on the island of Unguja, Zanzibar by employing the social-ecological systems framework from Ostrom 2009. In doing so, we conducted ecological surveys, catch assessments, interviews with gleaners, household surveys, focus group interviews and analyzed the governance structure. This social-ecological systems analysis showed that gleaning is important for food security, local culture and livelihood. Yet, the multiple approaches in our study revealed that the local intertidal zone is degrading and that the gleaned catch is changing. Local narratives indicate that economically important bivalves (Modiolus spp.) and gastropods (Strombus spp.) are in decline, which was paralleled with low abundances of both genera within the ecological survey of the intertidal and catch landing assessment. We recommend that invertebrate gleaning, a fishery mainly comprised of women should be included in fisheries management.

    sted, utgiver, år, opplag, sider
    Springer Nature, 2023
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-481715 (URN)10.1007/s13280-022-01769-1 (DOI)000837965600002 ()35945415 (PubMedID)
    Forskningsfinansiär
    Swedish Research Council Formas, 2017-05411Swedish Research Council Formas, 2017-05535Uppsala University
    Tilgjengelig fra: 2022-08-15 Laget: 2022-08-15 Sist oppdatert: 2024-04-11bibliografisk kontrollert
    2. The Where, the How, and the Why of the gleaning fishery: Livelihoods, food security, threats and management on the island of Malalison, Philippines
    Åpne denne publikasjonen i ny fane eller vindu >>The Where, the How, and the Why of the gleaning fishery: Livelihoods, food security, threats and management on the island of Malalison, Philippines
    2023 (engelsk)Inngår i: Ocean and Coastal Management, ISSN 0964-5691, E-ISSN 1873-524X, Vol. 244, artikkel-id 106806Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Intertidal gleaning is a small-scale fishery (SSF) that is relatively little known, but contributes to the food security and income of many people. Yet, this SSF is not commonly considered in management planning, or policy development. This study investigates gleaning and its importance to food security and livelihoods of local people on the island of Malalison, Philippines, as well as the perceived threats to the coastal ecosystems where the gleaning occurs. In the study, 36 gleaners were interviewed and a participatory mapping session with 24 participants was held. The results reveal three distinct forms of gleaning in three different ecosystems around the island. The most common was walking gleaning within the rocky shorelines, followed by swimming or diving for invertebrates in shallow coral reef systems, and the collection of algae in a seagrass and algae meadows. While gleaning on average contributed to 9.57% of the monthly income of interviewees households, it was a primary source of income for 29% of women. For 81% of women and 33% of men gleaning was very important for the household food security. For men intertidal gleaning was considered a supplemental fishery when unable to perform regular SSF activities. The most commonly mentioned threat to coastal ecosystems was the increased impacts of typhoons (69.4% respondents), followed by an increase in gleaners (58.3%). Majority of the respondents stated gleaning should be regulated together with co-occurring SSF. Based on these results we discuss the importance of the gleaning for livelihoods and security, the implications of the existing threats, and the need to formally include gleaning in monitoring and management. We also suggest a need for both biological and social studies to provide science-based management guidelines. Understanding the gleaning practice is a prerequisite to address the obstacles and better plan for the management of this SSF.

    sted, utgiver, år, opplag, sider
    Elsevier, 2023
    Emneord
    Food security, Gender, Intertidal gleaning, Participatory mapping, Small-scale fisheries (SSF)
    HSV kategori
    Forskningsprogram
    Naturresurser och hållbar utveckling
    Identifikatorer
    urn:nbn:se:uu:diva-509803 (URN)10.1016/j.ocecoaman.2023.106806 (DOI)001157428900001 ()
    Forskningsfinansiär
    Swedish Research Council, 2017-05411
    Tilgjengelig fra: 2023-08-23 Laget: 2023-08-23 Sist oppdatert: 2024-04-11bibliografisk kontrollert
    3. Impacts of urbanization on mangrove forests and brachyuran crabs in Penang, Malaysia
    Åpne denne publikasjonen i ny fane eller vindu >>Impacts of urbanization on mangrove forests and brachyuran crabs in Penang, Malaysia
    Vise andre…
    2021 (engelsk)Inngår i: Regional Environmental Change, ISSN 1436-3798, E-ISSN 1436-378X, Vol. 21, nr 3, artikkel-id 69Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Urban development is driving the loss and subsequent fragmentation of mangrove forests in Penang, Malaysia. However, little research has focused on the implications of urbanization onto the biodiversity within mangrove forests. This study investigates and compares both vegetation and crab assemblages between urban and rural mangrove forests. Collectively, 5853 trees were recorded including 15 species from six families: Acanthaceae, Arecaceae, Lythraceae, Malvaceae, Meliaceae, and Rhizophoraceae. Avicennia marina accounted for 88.6% of all trees in the study and held the highest species importance (IV). Although the total number of mangrove tree species varied significantly between urban (14) and rural (7) mangrove forests, the mangrove forest structure based on IV did not vary significantly. In total, 633 crabs were recorded comprising 13 different species from three superfamilies: Grapsoidea, Ocypodoidea, and Paguroidea. Crab species richness did not vary between urban and rural sites, but the biomasses of five and the densities of four crab species varied significantly. Redundancy analysis (RDA) indicated that land use, salinity, and abundance of Avicennia officinalis can best describe the distribution of crab species (r2 =32.7). This study indicates that smaller fragmented urban mangroves at the east coast of Penang have a relatively high tree and crab diversity and are worth protecting, in addition to the larger mangrove forests on the west coast. The preservation of small yet interconnected mangrove sites could be critical to the recruitment of their flora and fauna and should be considered in decision-making processes.

    Emneord
    Urbanization, Mangrove ecology, Brachyuran crabs, Indo-West Pacific (IWP)
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-448995 (URN)10.1007/s10113-021-01800-3 (DOI)000663326100001 ()
    Tilgjengelig fra: 2021-09-10 Laget: 2021-09-10 Sist oppdatert: 2024-04-11bibliografisk kontrollert
    4. Exploring the local context of mangrove fragmentation. An analysis of livelihood security and potenital for mangrove conservation in Batan, the Philippines
    Åpne denne publikasjonen i ny fane eller vindu >>Exploring the local context of mangrove fragmentation. An analysis of livelihood security and potenital for mangrove conservation in Batan, the Philippines
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-526283 (URN)
    Tilgjengelig fra: 2024-04-08 Laget: 2024-04-08 Sist oppdatert: 2024-04-11
    Fulltekst (pdf)
    UUThesis_Stiepani,J-2024
    Fulltekst (pdf)
    Svensk sammanfattning
    Download (jpg)
    presentationsbild
  • 346.
    Stiepani, Johann
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Boonstra, Wiebren J.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Sadaba, Resurrecion
    University of the Philippines .
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Exploring the local context of mangrove fragmentation. An analysis of livelihood security and potenital for mangrove conservation in Batan, the PhilippinesManuskript (preprint) (Annet vitenskapelig)
  • 347.
    Stiepani, Johann
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Univ Bayreuth, Dept Biogeog, Univ Str 30, D-95447 Bayreuth, Germany; Leibniz Ctr Trop Marine Res ZMT, Fahrenheitstr 6, D-28359 Bremen, Germany.
    Gillis, Lucy Gwen
    Leibniz Ctr Trop Marine Res ZMT, Fahrenheitstr 6, D-28359 Bremen, Germany.
    Chee, Su Yin
    Univ Sains Malaysia, Ctr Marine & Coastal Studies, Gelugor 11800, Penang, Malaysia.
    Pfeiffer, Martin
    Univ Bayreuth, Dept Biogeog, Univ Str 30, D-95447 Bayreuth, Germany.
    Nordhaus, Inga
    Leibniz Ctr Trop Marine Res ZMT, Fahrenheitstr 6, D-28359 Bremen, Germany.
    Impacts of urbanization on mangrove forests and brachyuran crabs in Penang, Malaysia2021Inngår i: Regional Environmental Change, ISSN 1436-3798, E-ISSN 1436-378X, Vol. 21, nr 3, artikkel-id 69Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Urban development is driving the loss and subsequent fragmentation of mangrove forests in Penang, Malaysia. However, little research has focused on the implications of urbanization onto the biodiversity within mangrove forests. This study investigates and compares both vegetation and crab assemblages between urban and rural mangrove forests. Collectively, 5853 trees were recorded including 15 species from six families: Acanthaceae, Arecaceae, Lythraceae, Malvaceae, Meliaceae, and Rhizophoraceae. Avicennia marina accounted for 88.6% of all trees in the study and held the highest species importance (IV). Although the total number of mangrove tree species varied significantly between urban (14) and rural (7) mangrove forests, the mangrove forest structure based on IV did not vary significantly. In total, 633 crabs were recorded comprising 13 different species from three superfamilies: Grapsoidea, Ocypodoidea, and Paguroidea. Crab species richness did not vary between urban and rural sites, but the biomasses of five and the densities of four crab species varied significantly. Redundancy analysis (RDA) indicated that land use, salinity, and abundance of Avicennia officinalis can best describe the distribution of crab species (r2 =32.7). This study indicates that smaller fragmented urban mangroves at the east coast of Penang have a relatively high tree and crab diversity and are worth protecting, in addition to the larger mangrove forests on the west coast. The preservation of small yet interconnected mangrove sites could be critical to the recruitment of their flora and fauna and should be considered in decision-making processes.

    Fulltekst (pdf)
    FULLTEXT01
  • 348.
    Stiepani, Johann
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Jiddawi, Narriman
    Institute of Marine Sciences, University of Dar Es Salaam, Dar Es Salaam, Tanzania.
    Nordlund, Lina Mtwana
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Social-ecological system analysis of an invertebrate gleaning fishery on the island of Unguja, Zanzibar2023Inngår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 52, nr 1, s. 140-154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Invertebrate gleaning is a small-scale fishery that commonly occurs in the intertidal zone across the tropical Indo-Pacific. In this study, we investigated and analyzed several components of this fishery on the island of Unguja, Zanzibar by employing the social-ecological systems framework from Ostrom 2009. In doing so, we conducted ecological surveys, catch assessments, interviews with gleaners, household surveys, focus group interviews and analyzed the governance structure. This social-ecological systems analysis showed that gleaning is important for food security, local culture and livelihood. Yet, the multiple approaches in our study revealed that the local intertidal zone is degrading and that the gleaned catch is changing. Local narratives indicate that economically important bivalves (Modiolus spp.) and gastropods (Strombus spp.) are in decline, which was paralleled with low abundances of both genera within the ecological survey of the intertidal and catch landing assessment. We recommend that invertebrate gleaning, a fishery mainly comprised of women should be included in fisheries management.

    Fulltekst (pdf)
    fulltext
  • 349.
    Stiepani, Johann
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Sandig, Alma
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    The Where, the How, and the Why of the gleaning fishery: Livelihoods, food security, threats and management on the island of Malalison, Philippines2023Inngår i: Ocean and Coastal Management, ISSN 0964-5691, E-ISSN 1873-524X, Vol. 244, artikkel-id 106806Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Intertidal gleaning is a small-scale fishery (SSF) that is relatively little known, but contributes to the food security and income of many people. Yet, this SSF is not commonly considered in management planning, or policy development. This study investigates gleaning and its importance to food security and livelihoods of local people on the island of Malalison, Philippines, as well as the perceived threats to the coastal ecosystems where the gleaning occurs. In the study, 36 gleaners were interviewed and a participatory mapping session with 24 participants was held. The results reveal three distinct forms of gleaning in three different ecosystems around the island. The most common was walking gleaning within the rocky shorelines, followed by swimming or diving for invertebrates in shallow coral reef systems, and the collection of algae in a seagrass and algae meadows. While gleaning on average contributed to 9.57% of the monthly income of interviewees households, it was a primary source of income for 29% of women. For 81% of women and 33% of men gleaning was very important for the household food security. For men intertidal gleaning was considered a supplemental fishery when unable to perform regular SSF activities. The most commonly mentioned threat to coastal ecosystems was the increased impacts of typhoons (69.4% respondents), followed by an increase in gleaners (58.3%). Majority of the respondents stated gleaning should be regulated together with co-occurring SSF. Based on these results we discuss the importance of the gleaning for livelihoods and security, the implications of the existing threats, and the need to formally include gleaning in monitoring and management. We also suggest a need for both biological and social studies to provide science-based management guidelines. Understanding the gleaning practice is a prerequisite to address the obstacles and better plan for the management of this SSF.

    Fulltekst (pdf)
    fulltext
  • 350.
    Stoddard, Isak
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Uppsala centrum för hållbar utveckling, CSD Uppsala, Cemus. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    What was education for?: Learning in the shadow of climate change2020Inngår i: Social Ecology and Education: Transforming Worldviews & Practices / [ed] David Wright; Stuart B. Hill, Oxford: Routledge, 2020Kapittel i bok, del av antologi (Annet vitenskapelig)
456789 301 - 350 of 431
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