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  • 251.
    Lehoux, Alizée
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Isidorova, Anastasija
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Limnologi.
    Collin, Fredrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Koestel, John
    Swedish Univ Agr Sci, Dept Soil & Environm, Box 7014, SE-75007 Uppsala, Sweden.;Forschungsanstalt Agroscope Reckenholz Tanikon, Reckenholzstr 191, CH-8046 Zurich, Switzerland..
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Dahlberg, Anna-Karin
    Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Box 7050, SE-75007 Uppsala, Sweden..
    Extreme gas production in anthropogenic fibrous sediments: An overlooked biogenic source of greenhouse gas emissions2021Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 781, artikkel-id 146772Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Fibrous sediments that originated from old pulp and paper industry emissions are recognized as a potential threat to the aquatic environment because they are highly contaminated. In addition, biogenic degradation of the organic material from so-called "fiberbanks" has a high potential to produce greenhouse gases (GHG). In this study, X-ray tomography, optical sensors and gas analyzers were used to identify and quantify the gas produced and released from samples of two different fiberbanks. We show that a finer fibrous structure allows the formation of larger gas bubbles and higher gas production rates compared to coarser material composed of wood pieces. High contents of methane (average 56% to 65%) and carbon dioxide (average 18% to 20%) were measured in the gas emitted from both types of fiberbank. Measured methane production rates from the fiberbanks samples are one to three orders of magnitude higher than previously reported rates from sediments within the studied temperature range (between 0.03 and 0.51 mu m CH4/h/g dw over 4.7 to 20 degrees C). The potential for methane and carbon dioxide production in the fiberbank volume likely present in Sweden is estimated to correspond to 7% of Sweden's total known GHG emissions for 2019. These findings show that fiberbanks have the potential to be a significant emitter of GHG.

    Fulltekst (pdf)
    fulltext
  • 252.
    Lehoux, Alizée P.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Petersen, Karina
    Norwegian Inst Water Res, Gaustadalleen 21, N-0349 Oslo, Norway..
    Leppanen, Matti T.
    Finnish Environm Inst, Survontie 9 A, FI-40500 Jyvaskyla, Finland..
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Olsen, Marianne
    Norwegian Inst Water Res, Gaustadalleen 21, N-0349 Oslo, Norway..
    Status of contaminated marine sediments in four Nordic countries: assessments, regulations, and remediation approaches2020Inngår i: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 20, nr 6, s. 2619-2629Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose Since the 1960s, pollution of the marine environment has been observed around the world, and a general awareness of the potential environmental hazards from contaminants arose. This general awareness was followed by implementation of environmental regulations at the national and international levels regarding industrial discharges, and forcing the development of management programs to improve the environmental quality. This overview focuses on the status of assessments, regulations, and remediation actions of contaminated marine sediments in four North European countries: Sweden, Norway, Finland, and Denmark. Results and discussion We found that the extent of assessment surveys and the implementation of sediment remediation actions vary between the countries, with Norway the most advanced. Norway has initiated national pilot remediation tests, followed by full-scale site remediation by dredging and in situ capping in several projects along the coast. Sweden is following Norway's example, although with fewer completed projects. In Finland, the tradition of maintenance dredging is still very strong although the main purpose has not been cleanup actions. Accordingly, in Denmark, dredging is primarily used to maintain sailing depths. All four countries have implemented the Water Framework Directive in addition to national regulations that provide the authority for imposing and implementing sediment remediation measures. However, only Norway has implemented a national strategy on remediation of contaminated sediments. Conclusions This overview highlights the need for enhanced communication and exchange of experiences between the four Nordic countries of concern with regard to sediment remediation strategy and management.

    Fulltekst (pdf)
    FULLTEXT01
  • 253.
    Lehoux, Alizée P.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Univ Littoral Cote dOpale, Lille, France.
    Sanchez-Hachair, Arnaud
    Univ Littoral Cote dOpale, Lille, France.
    Lefebvre, Gaëtan
    Direction territoriale Nord-Picardie, Lille, France.
    Carlier, Guillaume
    Direction territoriale Nord-Picardie, Lille, France.
    Hébrard, Celine
    Direction territoriale Nord-Picardie, Lille, France.
    Lima, Ana T.
    University of Waterloo, Waterloo, Canada.
    Hofmann, Annette
    Univ Littoral Cote dOpale, Lille, France.
    Chromium (VI) Retrieval from Chromium Ore Processing Residues by Electrokinetic Treatment2017Inngår i: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 228, nr 9, artikkel-id 378Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Electrokinetics (EK) was investigated as a possible technique for in-situ treatment of leachable chromium at a built site contaminated with chromium ore processing residues (COPR). A preliminary EK experiment was carried out at the laboratory scale on an undisturbed COPR core sample. Methods applied for material and pore water characterization before and after EK treatment addressed physical aspects by laser diffraction granulometry, pycnometry and pore water content, mineralogical aspects by X-ray diffraction, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, and chemical aspects by inductively coupled plasma-atomic emission spectroscopy and atomic absorption spectroscopy for elemental composition, spectrophotometry for Cr(VI) analysis, and potentiometry for pH determination. EK was run at 1 V/cm with no external constraints on current intensity. The EK experiment reached an extraction of 72% of the total leachable Cr(VI) after only 10 days of treatment and 84% after 20 days. Material texture, composition, and pH remained similar. These results indicate that EK presents a potential solution for extracting leachable Cr(VI) from COPR sites. The impounded COPR material appeared to be heterogeneous in composition at all scales, from field to lab sample, adding to the challenge of in-situ treatment.

  • 254.
    Li, Nu
    et al.
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    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..
    Liu, Rui
    Intermediate Energy Informat & Dev Strateg Res Ctr, Beijing 100038, Peoples R China..
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Methane emission reduction in China's natural gas industry: Construction of technology inventory and selection of optimal technology programs2024Inngår i: Sustainable Production and Consumption, ISSN 2352-5509, Vol. 44, s. 39-54Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Methane (CH4) is a potent yet short-lived greenhouse gas (GHG), and CH4 emissions from China's natural gas industry hinder its low-carbon and high-quality development. This paper addressed this challenge by compiling emission reduction technology inventory targeting CH4 emissions from process and vented within the natural gas industry. Using a multi-objective optimization model and the NSGA-II algorithm, various technology programs were generated to minimize both emissions and costs simultaneously. These programs underwent classification using quadrants and the osculating value method to identify optimal programs for emission reduction and costeffectiveness. This paper examined 30 potential programs as samples for upstream and midstream. The study demonstrated that for decision-makers with preferences, this paper employed quadrant classification, categorizing all potential programs into three categories: "emission reduction," "cost," and "comprehensive." This categorization met the demand preferences of different decision-makers. For decision-makers lacking specific preferences, the paper identified the best emission reduction technology programs under the current target using the osculating value method. Specifically, in the upstream, the most effective program achieved a 37.85 % reduction in emissions, highlighting "Reduced Emissions Completions for Hydraulically Fractured Gas Wells" as the critical technology. In the midstream, the best program achieved a reduction efficiency of 25.80 %, with "Replacing Wet Seals with Dry Seals in Centrifugal Compressors" contributing the most to emissions reduction. This study offers guidance and illuminating reference cases for the selection of CH4 emission reduction technologies within China's natural gas industry.

  • 255.
    Lindgren, Oskar
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Hahn, Thomas
    Stockholm Univ, Stockholm Resilience Ctr, Stockholm, Sweden..
    Karlsson, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Malmaeus, Mikael
    IVL Swedish Environm Res Inst, Stockholm, Sweden..
    Exploring sufficiency in energy policy: insights from Sweden2023Inngår i: Sustainability: Science, Practice, & Policy, E-ISSN 1548-7733, Vol. 19, nr 1, artikkel-id 2212501Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Energy efficiency and renewable energy strategies have been insufficient in achieving rapid and profound reductions of energy-related greenhouse-gas (GHG) emissions. Consequently, energy sufficiency has gained attention as a complementary strategy over the past two decades. Yet, most research on energy sufficiency has been theoretical and its implementation in policy limited. This study draws on the growing sufficiency literature to examine the presence of sufficiency as a strategy for reducing energy-related GHG emissions in Sweden, a country often regarded as a "climate-progressive" country. By conducting a keyword and content analysis of energy policies and parliamentary debates during four governmental terms of office (2006-2022), this research explores the extent to which sufficiency is integrated into Swedish energy policy, as well as potential barriers to its adoption. The analyses revealed a scarcity of sufficiency elements. Although some policies could potentially result in energy savings, they are infrequent and overshadowed by the prevailing emphasis on efficiency and renewable energy. Furthermore, Sweden lacks a target for sufficiency or absolute energy reductions. The main impediments to sufficiency implementation include the disregard of scientific evidence in the policy-making process and the perceived contradiction between sufficiency and industrial competitiveness. This study thus concludes that sufficiency at best remains at the periphery of Swedish energy policy. Given the reinforced ambitions within the European Union, this raises questions regarding the validity of Sweden's reputation as a climate-progressive country.

    Fulltekst (pdf)
    fulltext
  • 256.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Bosnia’s Treacherous Road to Brussels: The Attempt to Europeanize the Balkans2006Inngår i: Baltic and East European Studies, ISSN 1651-7849 ; 7Artikkel i tidsskrift (Annet vitenskapelig)
  • 257.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Can Democracy Safeguard the Rights of Future Generations?: Climate Change and Intergenerational Injustice2023Inngår i: Democracy in a Hotter Time: Climate Change and Democratic Transformation / [ed] David W. Orr, MIT Press, 2023, 1, s. 296-Kapittel i bok, del av antologi (Fagfellevurdert)
  • 258.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Democracy and the Challenge of Climate Change2021Rapport (Annet vitenskapelig)
    Abstract [en]

    Climate change poses an existential threat for humanity and has become the defining issue of our time. The outcome of the climate crisis will depend on whether democracies can drastically reduce their carbon footprints in the coming years. Climate change already has an impact on democratic governance through its effects on food security, conflicts, water scarcity. migration and natural disasters, among other consequences. Climate change also tests the ways in which democracies cooperate and collectively confront issues of relevance to humankind. Democracies need to formulate and put in place effective responses to climate change to respond to the needs of the current and future generations.

    Climate change actions in democracies face perceived challenges such as short-term bias in decision-making, policy capture or inconsistency, weak accountability mechanisms and the permeability of the policy-making process to interests adverse to fighting climate change through the role of money in politics. Apart from its intrinsic value to citizens, democracy also brings critical advantages in formulating effective climate policy, such as representative parliaments which can hold governments to account, widespread civic participation, independent media and a free flow of information, the active engagement by civil society organizations in policymaking and the capacity for institutional learning in the face of complex issues with long-term and global social and political implications. International IDEA’s work on climate change and democracy aims to support democratic institutions to successfully confront the climate crisis by leveraging their advantages and overcoming the challenges to formulating effective and democratically owned climate policy agendas.

    Fulltekst (pdf)
    fulltext
  • 259.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Demokratin inför klimatkrisen. Kan framtida generationers fri- och rättigheter säkras. Kapitel i antologin "Demokratin ochgrundbulten." Kommittén Demokratin 100 år.2021Rapport (Annet (populærvitenskap, debatt, mm))
  • 260.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Den konfliktfyllda amerikanska klimatpolitiken2022Inngår i: Statsvetenskaplig Tidskrift, ISSN 0039-0747, ISSN 0039-0747, Vol. 123, nr 4, s. 735-762Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    At the inauguration day of President Joe Biden, the United States re-entered the Paris Agreement and soon thereafter a pledge was made to cut greenhouse gas emissions by half to 2030 and reach climate neutrality to 2050. The radical shift from the policy of the previous president is an illustration of how deeply polarised the climate issue is the United States. This article discusses the background of this polarisation, identi-fying its roots in the 1970s energy crisis. From this time on, the Republican party has been deeply entwined with fossil fuel interests, and these connections were further entrenched during the fracking boom. The prospect of overcoming the polarisation on climate is to a great extent dependent on a potential shift in attitudes to climate change among young republican voters and the growth of renewable energy, particu-larly in states dominated by the Republican party

  • 261.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Det politska samtalet i en digital tid2023Rapport (Annet (populærvitenskap, debatt, mm))
  • 262.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Folkstyret i rädslans tid2017Bok (Annet (populærvitenskap, debatt, mm))
  • 263.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Torsten Kolind: Post-war Identification: Everyday Muslim Counterdiscourse in Bosnia Herzegovina: Aarhus : Aarhus University Press, 2008, SBN 87-7934-313-92010Inngår i: Nordisk Östforum, ISSN 0801-7220Artikkel, omtale (Annet vitenskapelig)
  • 264.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    What motivates urban climate leaders?: A study of urban climate governance in eight Swedish municipalities2023Inngår i: International Journal of Urban Sustainable Development, ISSN 1946-3138, E-ISSN 1946-3146, Vol. 15, nr 1, s. 267-281Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper explores the motivations behind urban climate governance in eight Swedish municipalities. The study demonstrates that political consensus among, and willingness of, urban political leaders is of importance for motivating climate actions. Municipalities are moreover motivated by the accomplishments of other cities, national and subnational policies, and an increasing climate concern in society. In line with previous research, individual policy entrepreneurs have been important for local climate action; however, with the adoption of national and subnational policies, local climate policies are becoming increasingly institutionalised. Although some of the conclusions of the study confirm the significance of a polycentric governance approach, little relevance was attributed to citizen participation. The institutionalisation of urban climate governance deserves further attention so as to better understand how the dynamics of polycentric governance can be affected, and what implications this may have on climate policy-making process, and the engagement and support of urban residents.

    Fulltekst (pdf)
    fulltext
  • 265.
    Lindvall, Daniel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Why municipalities reject wind power: A study on municipal acceptance and rejection of wind power instalments in Sweden2023Inngår i: Energy Policy, ISSN 0301-4215, E-ISSN 1873-6777, Vol. 180, artikkel-id 113664Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article explores municipal acceptance of wind power in Sweden and draws conclusions on the basis of semi-structured interviews with municipal decision-makers, together with analysis of documents and statistical data. In line with previous research, it demonstrates that wind power opposition is more complex than just a NIMBY effect. The attitudes of local residents influence municipal decision-makers, but may also act to augment and mobilize opposition. Perceptions of distributional injustice, generated by the lack of local economic benefits and the geographically uneven deployment of wind and hydropower, are also relevant in explaining community and municipal acceptance. Moreover, municipal acceptance depends on national political discourses, economic aspects, institutional settings, regulations and sociopolitical factors. To overcome acceptance barriers, the article argues for the need of some kind of formal compensation schemes, directed to both local communities and the municipality. The authority of the municipality to levy taxes on wind power could potentially rectify perceptions of energy injustice between different geographic regions, stimulate higher approval rates, and motivate municipalities to assume a role as an intermediary, accommodating different, and sometimes conflicting, local, national, and global interests.

    Fulltekst (pdf)
    fulltext
  • 266.
    Lindvall, Daniel
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Karlsson, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Exploring the Democracy-Climate Nexus: A review of correlations between democracy and climate policy performance"2023Inngår i: Climate Policy, ISSN 1469-3062, E-ISSN 1752-7457Artikkel i tidsskrift (Fagfellevurdert)
  • 267.
    Lindvall, Daniel
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Vowles, Kjell
    Hultman, Martin
    Upphettning: demokratin i klimatkrisens tid2020Bok (Annet (populærvitenskap, debatt, mm))
  • 268.
    Liu, Rui
    et al.
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    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..
    Yang, Lifang
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    Li, Nu
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    Jin, Lei
    China Univ Petr, Sch Econ & Management, Beijing 102249, Peoples R China..
    Willerström, Jakob
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    How should water resources be allocated for shale gas development?: An exploratory study in China2022Inngår i: Sustainable Production and Consumption, ISSN 2352-5509, Vol. 30, s. 1001-1018Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Water scarcity has emerged as one of the most important global challenges of the twenty-first century. With rising demand for energy, and water being a critical input in energy production, the availability of water resources has put energy sustainable production under growing strain. While unconventional natural gas (especially shale gas) is seen as an important bridge for promoting the transition of energy system from high to low carbon, water availability is a significant constraint on the development of energy resources owing to the massive quantity of water used by the hydraulic fracturing. Against this background, our study aims to optimize the allocation of regionally scarce water resources for fostering integrated economic, social, and environmental growth in shale gas development plays. In light of the uncertainty inherent in the water supply management system for shale gas development, this work employed the Interval Two-stage Stochastic Programming (ITSP) to establish an optimal allocation model for water resources between wells jointly dispatched by surface water, underground water and reused water. The model predicted water scarcity, optimal water allocation, and the total benefit of the shale gas development water supply system under various scenarios. Furthermore, when compared to the Twostage Stochastic Programming (TSP) model results, it was found that the ITSP model's interval value may present decision makers with more ideas and options than the TSP model. In addition, since the ITSP model is oblivious to the system risk issue, it incorporated robust optimization into the original ITSP model to build the Interval Two-stage Robust Stochastic Programming (ITRSP) model. Our findings were expressed as intervals that more accurately represent the actual optimal allocation of water resources, which also provided a broader decision-making space for decision makers in managing shale gas development water supply management schemes. (c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

  • 269.
    Ljungberg, Alice
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. SLU, Institutionen för skogsekonomi..
    Omställning till hållbara livsmedelssystem: Kommersiell stadsodling i Stockholm2020Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [sv]

    De storskaliga globala livsmedelssystemen står inför ett antal utmaningar inom hållbar utveckling. Livsmedelssystemens nuvarande utformning resulterar i hållbarhetsproblem som förlust av biologisk mångfald och utarmning av jordar, långa livsmedelskedjor och stora avstånd mellan konsument och producent. Klimatförändringarnas effekter och den ökande urbaniseringen bidrar ytterligare till problematiken. Behovet av en omställning till hållbara livsmedelssystem är därför stort och kräver innovativa lösningar såväl som en omfördelning av naturresurser. Ett exempel på en systeminnovation är stadsodling, som uppvisat potential till högre resurseffektivitet såväl som till ökad social hållbarhet i urbana och stadsnära områden. Trots det ökande intresset för stadsodling tycks det finnas en brist på empiriska studier som undersöker stadsodlingens nuvarande status, sammansättning och olika faktorer för utveckling. Syftet med detta examensarbete är således att identifiera faktorer och förutsättningar som påverkar utvecklingen av stadsodling som en del av omställningen mot en hållbarare livsmedelsproduktion, i den specifika kontexten i Stockholm. Studien tillämpade en flexibel, kvalitativ forskningsdesign och inbegriper en systematisk kartläggning och en kvalitativ fallstudie av kommersiell stadsodling i Stockholm. Det empiriska datamaterialet baseras på en litteraturstudie, semistrukturerade kvalitativa intervjuer och insamling av sekundärdata. En innehållsanalys av det empiriska datamaterialet utfördes med vägledning av ett teoretiskt ramverk baserat på omställningsteori ur ett flernivåperspektiv.

    Studiens resultat visar att kommersiell stadsodling är ett mångfacetterat såväl som växande fenomen, men att många verksamheter befinner sig i en tidig fas. Den form av kommersiell stadsodling som växt fram mest i Stockholm är klimatkontrollerade inomhusodlingar. Nio av 14 identifierade verksamheter är inomhusodlingar, två är etablerade växthus och tre är utomhusodlingar. Kartläggningen indikerar att kommersiell stadsodling i dagsläget bidrar med omkring 0.5-4% av direktkonsumtionen av örter och sallat i Storstockholm. Det finns dock potential för produktion av större volymer och en större mångfald av grödor i de olika stadsodlingssystemen. Studien identifierade ett flertal faktorer och förutsättningar som påverkar möjligheterna till en utveckling av lokal livsmedelsproduktion genom stadsodling. Byråkratiska, regulatoriska, ekonomiska och kulturella faktorer visade sig utgöra hinder för utvecklingen av stadsodling. Detta indikerar att det krävs politiskt stöd i form av främjande ramverk och policy för markanvändning, som möjliggör och underlättar upplåtelse av mark för kommersiell odling. Andra möjliggörande åtgärder kan vara policyverktyg för att i framtiden kunna underlätta offentlig upphandling av lokal mat. Vidare efterfrågas ett större engagemang och ansvar från näringslivet, i form av ökande investeringar i lokal och hållbar mat samt externa samarbeten mellan aktörer. De indikationer som framkom om att konsumenter i högre utsträckning går runt de dominerande alternativen i livsmedelssystemen och efterfrågar kortare värdekedjor identifierades också som en möjliggörande faktor för den fortsatta utvecklingen av stadsodling.

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    alice_ljungberg
  • 270.
    Lougheed, Bryan C.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Uppsala UniUniv Paris Saclay, IPSL, LSCE, CEA,CNRS,UVSQ, F-91190 Gif Sur Yvette, France.
    Metcalfe, Brett
    Univ Paris Saclay, IPSL, LSCE, CEA,CNRS,UVSQ, F-91190 Gif Sur Yvette, France;Vrije Univ Amsterdam, Dept Earth Sci, Fac Sci, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands.
    Ninnemann, Ulysses S.
    Univ Bergen, Dept Earth Sci, Allegaten 41, N-5007 Bergen, Norway.
    Wacker, Lukas
    Swiss Fed Inst Technol, Lab Ion Beam Phys, Otto Stern Weg 5, CH-8093 Zurich, Switzerland.
    Moving beyond the age-depth model paradigm in deep-sea palaeoclimate archives: dual radiocarbon and stable isotope analysis on single foraminifera2018Inngår i: Climate of the Past, ISSN 1814-9324, E-ISSN 1814-9332, Vol. 14, nr 4, s. 515-526Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Late-glacial palaeoclimate reconstructions from deep-sea sediment archives provide valuable insight into past rapid changes in ocean chemistry. Unfortunately, only a small proportion of the ocean floor with sufficiently high sediment accumulation rate (SAR) is suitable for such reconstructions using the long-standing age-depth model approach. We employ ultra-small radiocarbon (C-14) dating on single microscopic foraminifera to demonstrate that the long-standing age-depth model method conceals large age uncertainties caused by post-depositional sediment mixing, meaning that existing studies may underestimate total geochronological error. We find that the age-depth distribution of our C-14-dated single foraminifera is in good agreement with existing bioturbation models only after one takes the possibility of Zoophycos burrowing into account. To overcome the problems associated with the age-depth paradigm, we use the first ever dual C-14 and stable isotope (delta O-18 and delta C-13) analysis on single microscopic foraminifera to produce a palaeoclimate time series independent of the age-depth paradigm. This new state of the art essentially decouples single foraminifera from the age-depth paradigm to provide multiple floating, temporal snapshots of ocean chemistry, thus allowing for the successful extraction of temporally accurate palaeoclimate data from low-SAR deep-sea archives. This new method can address large geographical gaps in late-glacial benthic palaeoceanographic reconstructions by opening up vast areas of previously disregarded, low-SAR deep-sea archives to research, which will lead to an improved understanding of the global interaction between oceans and climate.

    Fulltekst (pdf)
    fulltext
  • 271.
    Lougheed, Bryan C.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Univ Paris Saclay, Lab CNRS CEA UVSQ, IPSL, LSCE, Gif Sur Yvette, France.
    Obrochta, S. P.
    Akita Univ, Grad Sch Int Resource Sci, Akita, Japan.
    A Rapid, Deterministic Age-Depth Modeling Routine for Geological Sequences With Inherent Depth Uncertainty2019Inngår i: Paleoceanography and Paleoclimatology, ISSN 2572-4517, E-ISSN 2572-4525, Vol. 34, nr 1, s. 122-133Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Traditional approaches to age-depth modeling typically assume no uncertainty for the depth value of dated intervals. However, such an assumption may not be fully valid in the case of poor coring recovery or significant sediment deformation, as well as in the case of a large subsampling interval. In consideration of these issues, we present a new age-depth modeling routine, Undatable, which includes uncertainty in both age and depth. Undatable uses Bayesian radiocarbon (C-14) calibration software (MatCal) and a deterministic approach with a positive sediment accumulation rate assumed a priori which, combined with efficient programming practices, allows for the rapid production (in a matter of seconds in many cases) of age-depth models for multiple types of geological archives. Undatable has so far been successfully applied to coral archives, as well as sediment archives from estuarine, lacustrine, and deep-sea environments. Through the inclusion of a bootstrapping option, the software performs particularly well in the case of a large scatter in age-depth constraints by expanding the uncertainty envelope of the age-depth model. Unlike other deterministic models, increasing the density of age-depth constraints results in increased precision in Undatable, even at centennial scale, thus emulating the results of probabilistic models. In addition to the code itself, we also provide an interactive graphical user interface (GUI) that allows users to experiment with multiple age-depth model settings to investigate the sensitivity of a given data set to multiple parameters.

  • 272.
    Lougheed, Bryan C.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Vrije Univ, Dept Earth Sci, Amsterdam, Netherlands..
    Obrochta, Stephen P.
    Akita Univ, Grad Sch Int Resource Sci, Akita, Japan..
    Lenz, Conny
    Lund Univ, Dept Geol, Lund, Sweden..
    Mellström, Anette
    Lund Univ, Dept Geol, Lund, Sweden..
    Metcalfe, Brett
    Vrije Univ, Dept Earth Sci, Amsterdam, Netherlands..
    Muscheler, Raimund
    Lund Univ, Dept Geol, Lund, Sweden..
    Reinholdsson, Maja
    Lund Univ, Dept Geol, Lund, Sweden..
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Zillen, Lovisa
    Swedish Geol Survey, Uppsala, Sweden..
    Bulk sediment C-14 dating in an estuarine environment: How accurate can it be?2017Inngår i: Paleoceanography, ISSN 0883-8305, E-ISSN 1944-9186, Vol. 32, nr 2, s. 123-131Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Due to a lack of marine macrofossils in many sediment cores from the estuarine Baltic Sea, researchers are often forced to carry out C-14 determinations on bulk sediment samples. However, ambiguity surrounding the carbon source pathways that contribute to bulk sediment formation introduces a large uncertainty into C-14 geochronologies based on such samples, and such uncertainty may not have been fully considered in previous Baltic Sea studies. We quantify this uncertainty by analyzing bulk sediment C-14 determinations carried out on densely spaced intervals in independently dated late-Holocene sediment sequences from two central Baltic Sea cores. Our results show a difference of similar to 600 C-14 yr in median bulk sediment reservoir age, or R(t)(bulk), between the two core locations (similar to 1200 C-14 yr for one core, similar to 620 C-14 yr for the other), indicating large spatial variation. Furthermore, we also find large downcore (i.e., temporal) R(t)(bulk) variation of at least similar to 200 C-14 yr for both cores. We also find a difference of 585 C-14 yr between two samples taken from the same core depth. We propose that studies using bulk sediment C-14 dating in large brackish water bodies should take such spatiotemporal variation in R(t)(bulk) into account when assessing uncertainties, thus leading to a larger, but more accurate, calibrated age range.

  • 273.
    Lougheed, Bryan C.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands..
    van der Lubbe, H. J. L.
    Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands..
    Davies, Gareth R.
    Vrije Univ Amsterdam, Dept Earth Sci, Amsterdam, Netherlands..
    Sr-87/Sr-86 as a quantitative geochemical proxy for C-14 reservoir age in dynamic, brackish waters: Assessing applicability and quantifying uncertainties2016Inngår i: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, nr 2, s. 735-742Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Accurate geochronologies are crucial for reconstructing the sensitivity of brackish and estuarine environments to dynamic external impacts of the past. Radiocarbon (C-14) dating is commonly used for palaeoclimate studies, but its application in brackish environments is severely limited by an inability to quantify spatiotemporal variations in C-14 reservoir age, or R(t), due to dynamic interplay between river runoff and marine water. Additionally, old carbon effects and species-specific behavioral processes also influence C-14 ages. Using the world's largest brackish water body (the estuarine Baltic Sea) as a test bed, combined with a comprehensive approach that objectively excludes both old carbon (using GIS) and species-specific C-14 effects, we demonstrate the use of Sr-87/Sr-86 ratios for quantifying R(t) in ubiquitous mollusc shell material, leading to almost an order of magnitude increase in Baltic Sea C-14 geochronological precision over the current state of the art. We propose that similar proxy methods can be developed for other brackish water bodies worldwide.

  • 274.
    Lund, Linnea
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Decline Curve Analysis of Shale Oil Production: The Case of Eagle Ford2014Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    Production of oil and gas from shale is often described as a revolution to energyproduction in North America. Since the beginning of this century the shale oilproduction has increased from practically zero to currently supply almost half of theU.S. oil production. This development is made possible by the technology ofhorizontal drilling and hydraulic fracturing. Since the production has not been ongoingfor that long, production data is still fairly limited in length and there are still largeuncertainties in many parameters, for instance production decline, lifespan, drainagearea, geographical extent and future technological development. More research isneeded to be able to estimate future production and resources with more certainty.

    At the moment shale oil is extracted only in North America but around the worldinvestigations are starting to assess if the conditions are suitable from shale oilextraction elsewhere. The global technically recoverable resource has been estimatedto 345 Gb, 10% of all global technically recoverable resources. Health andenvironmental aspects of shale oil and gas production have not yet been investigatedthoroughly and there is a risk that these parameters may slow down or limit thespreading of shale development.

    This report aims to examine production patterns of shale oil wells by applying declinecurve analysis. This analysis comprises of analyzing historical production data toinvestigate how the future production may develop. The area of the study is the EagleFord shale play in Texas, U.S. The goal is to fit decline curves to production data andthen use them for making estimates of future production in the Eagle Ford.

    The production in the shale oil wells included in the study reach their peak already within a few months after production starts. After this point, production is declining.After one year, production has decreased by 75% and after two years the productionis 87% of the peak production. The hyperbolic decline curve has a good fit toproduction data and in many cases the curve is close to harmonic. It is too early todetermine whether the alternative decline curve that is tested, the scaling declinecurve, has a better fit in the long term. The report also investigates how the density of the petroleum affects the declinecurve. The result is that lighter products decline faster than heavier.

    A sensitivity analysis is performed to illustrate how different parameters affect thefuture production development. In addition to the wells’ decline rate, the assumptionson the maximum number of wells, the maximal production and the rate at which newwells are added affect the ultimately recoverable resource. These parameters all havelarge uncertainties and makes resource estimations more difficult.

    Fulltekst (pdf)
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  • 275.
    Luthman, Ola
    et al.
    Södertörn Univ, Sch Nat Sci Technol & Environm Studies, Alfred Nobels Alle 7, S-14189 Huddinge, Sweden..
    Jonell, Malin
    Stockholm Univ, Stockholm Resilience Ctr, Kraftriket 2B, S-10691 Stockholm, Sweden.;Royal Swedish Acad Sci, Beijer Inst Ecol Econ, SE-10405 Stockholm, Sweden..
    Rönnbäck, Patrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Troell, Max
    Stockholm Univ, Stockholm Resilience Ctr, Kraftriket 2B, S-10691 Stockholm, Sweden.;Royal Swedish Acad Sci, Beijer Inst Ecol Econ, SE-10405 Stockholm, Sweden..
    Strong and weak sustainability in Nordic aquaculture policies2022Inngår i: Aquaculture, ISSN 0044-8486, E-ISSN 1873-5622, Vol. 550, artikkel-id 737841Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper, we critically analyze how sustainability is considered in aquaculture policies and strategies using the Nordic countries as a case. The strong versus weak sustainability concepts are used to define and clarify what sustainability aspects are central to each state. To illustrate these concepts further, we draw on and modify four mainstream environmental discourses defined by John Dryzek and apply them to the strong and weak sustainability dichotomy to help categorize how environmental sustainability is portrayed in Nordic aquaculture policies and strategies. Subsequently we apply the characteristics of the concepts to aquaculture and sustainability in the Nordic countries. This allows us to identify each state's depiction of sustainable aquaculture, compare these to one another and assess where the Nordic states position themselves regarding sustainability and aquaculture. Our findings show that the policies emphasize technological advancements, intensification, and economic growth, which correlates with weak sustainability. Environmental sustainability receives a significant role in the documents too but does not seem to trump increased intensification or profitability. All policies are heavily focused on fed aquaculture and in order to reduce negative impacts from aquaculture there is a need to incorporate key elements of strong sustainability in policies, including measures to reduce impacts from pollution and the spread of pathogens, use of high-grade food resources and energy consumption. This to transform the industry to sustainability rather than just making it less unsustainable.

    Fulltekst (pdf)
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  • 276.
    Lyon, Steve W.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Stockholm Univ, Dept Phys Geog, Stockholm, Sweden.;Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden.;Nature Conservancy, Delmont, NJ USA..
    King, Katie
    Stockholm Univ, Dept Phys Geog, Stockholm, Sweden..
    Polpanich, Orn-Uma
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Lacombe, Guillaume
    Int Water Management Inst, Viangchan, Laos..
    Assessing hydrologic changes across the Lower Mekong Basin2017Inngår i: Journal of Hydrology: Regional Studies, E-ISSN 2214-5818, Vol. 12, s. 303-314Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Study region: In this study, 33 catchments across the Lower Mekong Basin in Southeast Asia are examined to detect historical changes in their hydrological response via a model-based methodology.

    Study focus: Intensive development over the past half century across Southeast Asia's Lower Mekong Basin has inevitably affected natural resources. Large areas have been converted from forests for subsistence and commercial agriculture, and urban development. We implement an innovative approach to screen hydrologic data for detecting impacts of such large-scale changes on hydrological response. In a first step, temporal changes in the rainfall-runoff relationship were assessed using the parsimonious, two-parameter GR2M hydrological model. In a second step, a distribution-free statistical test was applied to detect whether significant changes have occurred in the wet season (high flow) and dry season (low flow) conditions.

    New hydrological insights for the region: Our results indicate that the majority of catchments (64% of those considered) with sufficiently long data records exhibited no discernable trends in hydrological response. Those catchments that did exhibit significant trends in hydrological response were fairly evenly split between increasing trends (between 21% and 24%) and decreasing trends (between 15% and 12%) with time. There was a lack of evidence that these changes where brought about by shifts in precipitation or potential evapotranspiration; however, catchments exhibiting significant increasing trends in hydrological behavior were found to have different land cover compositions (lower percentage of forest coverage and subsequently higher paddy rice coverage) than those exhibiting significant decreasing trends. The approach presented here provides a potentially valuable screening method to highlight regions for further investigation of improved mechanistic understanding. Without this connection, we might be blind to future hydrological shifts that can have significant impact on development.

    Fulltekst (pdf)
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  • 277.
    Löfroth, Hjördis
    et al.
    Swedish Geotech Inst, SE-58391 Linköping, Sweden.
    O'Regan, Matt
    Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Holmén, Martin
    Swedish Geotech Inst, SE-58391 Linköping, Sweden.
    Kopf, Achim
    Univ Bremen, MARUM Ctr Marine Environm Sci, Leobener Str 8, D-28359 Bremen, Germany.
    Göransson, Gunnel
    Swedish Geotech Inst, SE-58391 Linköping, Sweden.
    Hedfors, Jim
    Swedish Geotech Inst, SE-58391 Linköping, Sweden.
    Apler, Anna
    Geol Survey Sweden, Dept Marine Environm & Planning, Box 670, SE-75128 Uppsala, Sweden.
    Frogner-Kockum, Paul
    Swedish Geotech Inst, SE-58391 Linköping, Sweden.
    Challenges in slope stability assessment of contaminated fibrous sediments along the northern Baltic coast of Sweden2021Inngår i: Engineering Geology, ISSN 0013-7952, E-ISSN 1872-6917, Vol. 289, artikkel-id 106190Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In several locations along Sweden's northern Baltic coast there are deposits of contaminated fibrous sediments that are known as fiberbanks. Historically, these anthropogenic fiberbanks and associated contaminants were formed outside pulp and paper factories because of unregulated waste discharges. Some of the fiberbanks are located on seafloor slopes that are unstable and may fail, which could result in large amounts of fiber and contaminant dispersion. Hydroacoustic surveys have revealed that some parts of the fiberbanks have been dispersed to a wider area by submarine landslides. However, the unusual nature of these cellulose-rich sediments makes it difficult to apply conventional techniques for assessing submarine slope stability. Therefore, a combination of investigation techniques and interpretation methods was tested to assess the stability and triggering mechanisms for submarine slope failure identified in fiberbanks from the Angermanalven river estuary on the Baltic sea coast. The integration of bathymetric data, sediment lithology and geotechnical characteristics from in-situ and laboratory measurements, enabled the characterisation of underlying natural sediments and the fiberbanks at two sites. Despite low densities, which indicate that the fiberbank material is near the buoyancy level, the fiberbank deposits seem to be relatively stable. Our results indicate the underlying natural sediments are also stable and would require an external triggering mechanism to generate the observed slope failures. We suggest that pore water pressure, potentially related to groundwater table fluctuations, may be an important trigger for submarine landslides in the study area.

    Management of fiberbanks and associated fiber-rich sediments, which are numerous along Sweden's north east coast, requires that sites are risk assessed and prioritized for remediation. To do so, under water slope stability should be considered as a possible dispersion pathway and therefore needs to be investigated. The study illustrates the value of using a combination of geophysical and geotechnical field and laboratory methods, together with empirical relationships, to assess relevant input parameters for slope stability calculations for this type of sediment.

    Fulltekst (pdf)
    fulltext
  • 278.
    Majidi, Seyed Afshin
    et al.
    Geol Survey Iran, Mehraj Bd, Tehran, Iran.;Islamic Azad Univ, Dept Geol & Geophys, Sci & Res Branch, Tehran, Iran..
    Omrani, Jafar
    Geol Survey Iran, Mehraj Bd, Tehran, Iran..
    Troll, Valentin R.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Weis, Franz
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Houshmandzadeh, Abdolrahim
    Pars Kani Mineral Ind Res & Dev, Tehran, Iran..
    Ashouri, Ehsan
    Isfahan Univ Technol, Dept Min Engn, Esfahan 8415683111, Iran..
    Nezafati, Nima
    Islamic Azad Univ, Dept Geol & Geophys, Sci & Res Branch, Tehran, Iran..
    Chung, Sun-Lin
    Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan..
    Employing geochemistry and geochronology to unravel genesis and tectonic setting of iron oxide-apatite deposits of the Bafq-Saghand metallogenic belt, Central Iran2021Inngår i: International journal of earth sciences, ISSN 1437-3254, E-ISSN 1437-3262, Vol. 110, s. 127-164Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Bafq-Saghand metallogenic belt is located in the central part of the Kerman-Kashmar tectonic zone and contains 39 individual occurrences of iron oxide-apatite +/- REE mineralizations. These mineral concentrations, e.g., Chadormalu, Choghart, Sechahun, and Esfordi, comprise a total of similar to 1500 million tons of iron ore with an average grade of similar to 55% Fe. In terms of origin, time, and geodynamic setting, several modes of formation have been suggested for these ore deposits, including magmatic, hydrothermal, and banded iron formation scenarios. In the present study, the tectonic setting and metallogeny of iron oxide-apatites of the Bafq-Saghand belt are investigated utilizing trace element geochemistry, age dating, and oxygen isotope analyses. The geochemical characteristics of apatite and magnetite and the delta O-18 values of magnetite (from - 0.1 to + 2.2 parts per thousand) indicate a dominantly magmatic-hydrothermal (delta O-18 > + 0.9 parts per thousand) formation process, although primary magmatic mineralizations were locally leached and hydrothermally redeposited (e.g., samples with delta O-18 < + 0.9 parts per thousand). The Cambrian volcano-sedimentary host rocks to the mineralization is intruded by calc-alkaline tonalite, trondhjemite, granodioritic, dioritic, and granitic rocks that formed in association with subduction of the Proto-Tethys Ocean under the Gondwana supercontinent in the Neoproterozoic to Early Cambrian (525-547 Ma). Additionally, a later geodynamic episode produced intrusions of alkaline syenite and monzosyenite bodies during a continental rifting event. We provide new geochronological constraints for these younger alkaline igneous rocks that document a temporal range from 421 to 447 Ma for their intrusion. In combination with the previously reported overlapping ages of the older calc-alkaline magma bodies (525-547 Ma) with the volcano-sedimentary host rock (528 Ma) and the iron oxide mineralization (510-539 Ma), we can now exclude continental rifting as a geodynamic processes that is linked to ore formation in the region. Our results corroborate that the Bafq iron ore mineralization formed during subduction of the Proto-Tethys Ocean under the Gondwana supercontinent in a near surface continental margin setting.

  • 279.
    Mander, Sarah
    et al.
    Univ Manchester, Tyndall Ctr Climate Change Res, Manchester M13 4PL, Lancs, England..
    Anderson, Kevin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Univ Manchester, Tyndall Ctr Climate Change Res, Manchester M13 4PL, Lancs, England.
    Larkin, Alice
    Univ Manchester, Tyndall Ctr Climate Change Res, Manchester M13 4PL, Lancs, England..
    Gough, Clair
    Univ Manchester, Tyndall Ctr Climate Change Res, Manchester M13 4PL, Lancs, England..
    Vaughan, Naomi
    Univ East Anglia, Tyndall Ctr Climate Change Res, Norwich NR4 7TJ, Norfolk, England..
    The role of bio-energy with carbon capture and storage in meeting the climate mitigation challenge: A whole system perspective2017Inngår i: 13Th International Conference on Greenhouse Gas Control Technologies, Ghgt-13 / [ed] Dixon, T Laloui, L Twinning, S, Elsevier, 2017, s. 6036-6043Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper explores the role and implications of bio-energy with carbon capture and storage (BECCS) for addressing the climate change mitigation challenge. Framed within the context of the latest emissions budgets, and their associated uncertainty, we present a summary of the contribution of BECCS within the Integrated Assessment Model (IAM) scenarios used by the climate change community. Within this discussion we seek to shed light on two important areas. Firstly, that BECCS is a central, but often hidden element of many of the modelling work that underpins climate policy from the global to the national scale. The second area we address are the assumptions for BECCS embedded within IAM models, and the wider system consequences of these implied levels of deployment. In light of these challenges, we question whether BECCS can deliver what is anticipated of it within existing climate change policy. (C) 2017 The Authors. Published by Elsevier Ltd.

    Fulltekst (pdf)
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  • 280.
    Mark, Shucksmith
    et al.
    Newcastle University.
    Glass, Jayne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Polly, Chapman
    Impact Hub Inverness.
    Atterton, Jane
    Scotland's Rural College.
    Rural Poverty Today: Experiences of Social Exclusion in Rural Britain2023 (oppl. 1)Bok (Fagfellevurdert)
    Abstract [en]

    Poverty is perceived as an urban problem, yet many in rural Britain also experience hardship. This book explores how and why people in rural areas experience and negotiate poverty and social exclusion. It examines the role of societal processes, individual circumstances, sources of support (markets; state; voluntary organisations; family and friends) and the role of place.

    It concludes that the UK’s welfare system is poorly adapted to rural areas, with the COVID-19 pandemic, Brexit and cutbacks exacerbating pressures. Voluntary organisations increasingly fill gaps in support left by the state. Invaluable to those in policy and practice, the book recommends a combination of person-based and place-based approaches to tackle rural poverty.

  • 281.
    McKenzie, Len J.
    et al.
    James Cook Univ, Ctr Trop Water & Aquat Ecosyst Res, Cairns, Australia.;Seagrass Watch, Cairns, Qld, Australia..
    Nordlund, Lina M.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Jones, Benjamin L.
    Stockholm Univ, Dept Ecol Environm & Plant Sci, SE-10691 Stockholm, Sweden.;Project Seagrass, 33 Pk Pl, Cardiff CF10 3BA, Wales..
    Cullen-Unsworth, Leanne C.
    Project Seagrass, 33 Pk Pl, Cardiff CF10 3BA, Wales.;Cardiff Univ, Sustainable Pl Res Inst, 33 Pk Pl, Cardiff CF10 3BA, Wales..
    Roelfsema, Chris
    Univ Queensland, Sch Earth & Environm Sci, Remote Sensing Res Ctr, Brisbane, Qld, Australia..
    Unsworth, Richard K. F.
    Project Seagrass, 33 Pk Pl, Cardiff CF10 3BA, Wales.;Swansea Univ, Coll Sci, Seagrass Ecosyst Res Grp, Wallace Bldg, Swansea SA2 8PP, W Glam, Wales..
    The global distribution of seagrass meadows2020Inngår i: Environmental Research Letters, E-ISSN 1748-9326, Vol. 15, nr 7, artikkel-id 074041Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Seagrass meadows globally are under pressure with worldwide loss and degradation, but there is a growing recognition of the global importance of seagrass ecosystem services, particularly as a major carbon sink and as fisheries habitat. Estimates of global seagrass spatial distribution differ greatly throughout the published literature, ranging from 177 000 to 600 000 km(2)with models suggesting potential distribution an order of magnitude higher. The requirements of the Paris Climate Agreement by outlining National Determined Contributions (NDC's) to reduce emissions is placing an increased global focus on the spatial extent, loss and restoration of seagrass meadows. Now more than ever there is a need to provide a more accurate and consistent measure of the global spatial distribution of seagrass. There is also a need to be able to assess the global spread of other seagrass ecosystem services and in their extension, the values of these services. In this study, by rationalising and updating a range of existing datasets of seagrass distribution around the globe, we have estimated with Moderate to High confidence the global seagrass area to date as 160 387 km(2), but possibly 266 562 km(2)with lower confidence. We break this global estimate down to a national level with a detailed analysis of the current state of mapped distribution and estimates of seagrass area per country. Accurate estimates, however, are challenged by large areas remaining unmapped and inconsistent measures being used. Through the examination of current global maps, we are able to propose a pathway forward for improving mapping of this important resource. More accurate measure of global #seagrass distribution, critical for assessing current state and trends.

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  • 282. McMorran, Rob
    et al.
    Glendinning, James
    Glass, Jayne
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Rural Land Market Insights Report: A report to the Scottish Land Commission2022Rapport (Annet vitenskapelig)
    Abstract [en]

    This report presents the findings of the first stage of a two-stage research project commissioned by the Scottish Land Commission, on improving reporting of land market transactions in Scotland. This first stage aimed to identify current trends within Scotland’s rural land market to provide an up to date picture of buyer and seller motivations, with a specific focus on understanding how increased demand for natural capital investment isdriving activity in the land market. 

  • 283. Mellstrom, Anette
    et al.
    Nilsson, Andreas
    Stanton, Tania
    Muscheler, Raimund
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Suttie, Neil
    Post-depositional remanent magnetization lock-in depth in precisely dated varved sediments assessed by archaeomagnetic field models2015Inngår i: Earth and Planetary Science Letters, ISSN 0012-821X, E-ISSN 1385-013X, Vol. 410, s. 186-196Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Accurate and precise chronologies are needed to evaluate the existence and effect of a post-depositional remanent magnetization lock-in process on sedimentary palaeomagnetic records. Here we present lock-in modelling results of two palaeomagnetic records from varved lake sediments (lakes Kalksjon and Gyltigesjon) in Sweden by using model predictions based on archaeomagnetic data. We used the C-14 wiggle-match dating technique to improve the precision of the Kalksjon varve chronology in the period between 3000 and 2000 cal BP, which is characterized by pronounced palaeomagnetic secular variation. This method allowed us to infer an age model with uncertainties of +/- 20 years (95.4% probability range). Furthermore, we compared the palaeomagnetic record of Kalksjon to Gyltigesjon, which has a corresponding 14C wiggle-matched chronology. The ages of palaeomagnetic features derived from the wiggle-matched varve chronologies are older than those predicted by the archaeomagnetic models. Lock-in modelling was performed with different filter functions to explain the temporal offset and the amplitude of the lake sediment palaeomagnetic data. The analyses suggest that a linear lock-in function with lock-in depths (the depth below which no more natural magnetic remanence is acquired) that range between 30 and 80 cm in Kalksjon and 50 and 160 cm in Gyltigesjon are most appropriate to explain the data. These relatively deep lock-in depths in sediments without a bioturbated 'mixed-zone' can be attributed to the relatively high organic contents and low density of the lake sediments, which contribute to a thick unconsolidated upper zone of the sediment sequence in which re-alignment of magnetic particles can take place.

  • 284.
    Merle, Renaud E.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Caroff, Martial
    Girardeau, Jacques
    Cotten, Joseph
    Guivel, Christèle
    Segregation vesicles, cylinders, and sheets in vapor-differentiated pillow lavas: examples from Tore-Madeira Rise and Chile Triple Junction2005Inngår i: Journal of Volcanology and Geothermal Research, ISSN 0377-0273, E-ISSN 1872-6097Artikkel i tidsskrift (Fagfellevurdert)
  • 285.
    Merle, Renaud E.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Jiang, Qiang
    Curtin Univ, Western Australian Argon Isotope Facil, Perth, WA 6845, Australia.;Curtin Univ, TIGeR, Perth, WA 6845, Australia.;Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6845, Australia..
    Jourdan, Fred
    Curtin Univ, Western Australian Argon Isotope Facil, Perth, WA 6845, Australia.;Curtin Univ, TIGeR, Perth, WA 6845, Australia.;Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6845, Australia.;Curtin Univ, John de Laeter Ctr, Perth, WA 6845, Australia..
    Olierook, Hugo
    Curtin Univ, Sch Earth & Planetary Sci, Perth, WA 6845, Australia.;Curtin Univ, John de Laeter Ctr, Perth, WA 6845, Australia.;Curtin Univ, Timesc Mineral Syst Grp, Perth, WA 6845, Australia..
    The age and origin of the Balleny and Scott volcanic provinces, Ross Sea, Antarctica2022Inngår i: Chemie der Erde, ISSN 0009-2819, E-ISSN 1611-5864, Vol. 82, nr 4, artikkel-id 125904Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Balleny and Scott volcanic provinces are two isolated and remote volcanic occurrences located along the rifted margin of Western Antarctica in the Ross Sea. They include oceanic plateaus, seamounts, and volcanic islands. Although volcanic activity has been documented through remote sensing, there is no geochronological data based on radio-isotope methods constraining the duration of the volcanic activity in this region. As a consequence, hypotheses, based on the interpretation of chemical characteristics of the lavas, that suggested the volcanism to be either the result a deep mantle plume or a large-scale shallow melting anomaly have not yet been tested decisively. In order to tackle this issue, we have now dated lavas dredged from seamounts from both Balleny and Scott provinces using the Ar-40/Ar-39 technique. Our new age dates suggest that the Balleny and Scott volcanic provinces were active since at least 2.8 Ma and 2.4 Ma respectively. This suggests that these volcanic provinces were active simultaneously to the magmatism of the McMurdo volcanic group in the Western Antarctica Rift System that comprises Mount Erebus and Mount Melbourne stratovolcanoes. Our new dates suggest that there is no obvious age trend across the Balleny and Scott provinces. Combined with plate reconstructions since the end of Mesozoic, these data suggest that the Scott province does not coincide with any potential hot-spot track, thus negating a deep mantle plume origin for this volcanism. The case of the Balleny province is more ambiguous. The hypothesis of this province representing the end of the Tasman seamounts chain formed by a hot-spot track with decreasing-age trend is not confirmed by the new geochronological data, since available dates for the region are rather scarce and unreliable for the Tasman seamounts. Therefore, we suggest that the Balleny and Scott provinces originated from shallow mantle melting processes, a hypothesis that seems to be consistent with our re-interpretation of the Sr-Nd-Pb isotope data of the lavas from the Balleny and Scott provinces. We argue that these provinces were derived from a heterogeneous subcontinental lithospheric mantle metasomatized during ancient subductions and which is now scattered in the shallow mantle of the southwest Pacific realm. This scattered mantle source component has been melting since the beginning of Cenozoic, and was then progressively depleted in the most fusible components. This new working model can explain the presence of several magmatic provinces in the southwest Pacific-Antarctica realm which show similar chemical signatures.

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  • 286.
    Merle, Renaud
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Dipartimento de Geoscienze, Universita di Padova, Via Giotto 1, 35137 Padova, Italy.
    Jourdan, Fred
    Marzoli, Andrea
    Renne, Paul R.
    Grange, Marion
    Girardeau, Jacques
    Evidence of multi-phase Cretaceous to Quaternary alkaline magmatism on Tore–Madeira Rise and neighbouring seamounts from 40Ar/39Ar ages2009Inngår i: Journal of the Geological Society, ISSN 0016-7649, E-ISSN 2041-479X, Vol. 166, nr 5, s. 879-894Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Tore-Madeira Rise is a seamount chain located 300 kin off the Portugal and Morocco coasts attributed to hotspot activity. U-Pb ages of lavas from the northern and central Tore-Madeira Rise range between 103 and 80.5 Ma whereas Ar-40/Ar-39 ages from the central and southern Tore-Madeira Rise yield ages ranging from 94.5 to 0.5 Ma. We performed new Ar-40/Ar-39 measurements to better understand the geodynamic history of the Tore-Madeira Rise. Plagioclase ages from the Bikini Bottom and Torillon seamounts suggest ages of >90 Ma and >= 60 Ma, respectively. Amphiboles from the Seine seamount yield an age of 24.0 +/- 0.8 Ma. Biotites from lavas of the Ashton seamount give ages of 97.4 +/- 1.1 Ma and 97.8 +/- 1.1 Ma. The geochronological database available on the Tore-Madeira Rise has been filtered on statistical criteria to eliminate unreliable ages. The resulting database reveals three pulses of alkaline magmatism on the Tore-Madeira Rise at 103-80.5 Ma, at c. 68 Ma and between 30 Ma and the present. The magmatism was continuous from 103 Ma until c. 68 Ma and from c. 30 Ma until the present on the Tore-Madeira Rise, the surrounding seamounts and the Portugal coast. We suggest that the space-time distribution of this magmatism results from the interaction between a wide thermal anomaly emitting magmatic pulses and the complex motion of the Iberian plate.

  • 287.
    Mohr, Steve
    et al.
    The University of Newcastle, School of Engineering.
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Globala energisystem. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Mudd, Gavin
    University of New South Wales, Institute of Environmental Studies.
    Evans, Geoffrey
    The University of Newcastle, School of Engineering.
    Projection of long-term paths for Australian coal production: comparisons of four models2011Inngår i: International Journal of Coal Geology, ISSN 0166-5162, E-ISSN 1872-7840, Vol. 86, nr 4, s. 329-341Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Coal exports are an important source of revenue for Australia and for this reason Australian coal production and resources have been examined in detail and two recoverable resource estimates determined namely Standard and High. The Standard case calculated the likely recoverable coal resources in Australia to be 317 Gt, whereas the High scenario determined the maximal amount of recoverable coal resources at 367 Gt. Different modelling approaches (Logistic, Gompertz, Static and Dynamic supply and demand models) were used to project fossil fuel production and the projections of the relative approaches were compared. Good agreement was found between the Logistic, Static and Dynamic supply and demand models with production peaking in 2119 +/- 6 at between 1.9 and 3.3 Gt/y. Contrasting these projections the Gompertz curves peak in 2084 +/- 5 at 1-1.1 Gt/y. It was argued that the Logistic, Static and Dynamic models are more likely to produce accurate projections than the Gompertz curve. The production forecast is based on existing technology and constraints and a qualitative discussion is presented on possible influences on future production, namely: export capacity, climate change, overburden management, environmental and social impacts and export market issues.

  • 288.
    Moros, Matthias
    et al.
    Leibniz Inst Balt Sea Res Warnemunde, Seestr 15, D-18119 Rostock, Germany..
    Kotilainen, Aarno Tapio
    Geol Survey Finland, Environm Solut, PL 96 Vuorimiehentie 5,POB 96, Espoo, Finland..
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Neumann, Thomas
    Leibniz Inst Balt Sea Res Warnemunde, Seestr 15, D-18119 Rostock, Germany..
    Perner, Kerstin
    Leibniz Inst Balt Sea Res Warnemunde, Seestr 15, D-18119 Rostock, Germany..
    Meier, H. E. Markus
    Leibniz Inst Balt Sea Res Warnemunde, Seestr 15, D-18119 Rostock, Germany.;Swedish Meteorol & Hydrol Inst, Folkborgsvagen 17, Norrköping, Sweden..
    Leipe, Thomas
    Leibniz Inst Balt Sea Res Warnemunde, Seestr 15, D-18119 Rostock, Germany..
    Zillen, Lovisa
    Geol Survey Sweden, Dept Marine Geol, Box 670, S-75128 Uppsala, Sweden..
    Damste, Jaap S. Sinninghe
    NIOZ Royal Netherlands Inst Sea Res, Dept Marine Microbiol & Biogeochem, NL-1790 AB Den Burg, Texel, Netherlands.;Univ Utrecht, NL-1790 AB Den Burg, Texel, Netherlands.;Univ Utrecht, Fac Geosci, Dept Earth Sci, POB 80-021, NL-3508 TA Utrecht, Netherlands..
    Schneider, Ralph
    Univ Kiel, Inst Geosci, Ludewig Meyn Str 10, D-24117 Kiel, Germany..
    Is 'deep-water formation' in the Baltic Sea a key to understanding seabed dynamics and ventilation changes over the past 7,000 years?2020Inngår i: Quaternary International, ISSN 1040-6182, E-ISSN 1873-4553, Vol. 550, s. 55-65Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Numerous hydro-acoustic studies of the seabed of the Baltic Sea have revealed the unusual occurrence of sediment contourite drifts and re-suspension at greater water depths. In addition, radiocarbon dating of bulk sediments indicates significant age reversals. We present new geophysical, sediment proxy data (including extensive radiocarbon dating) and hydrographic measurements, which are combined with results of numerous marine geological studies performed during the last decades. These data indicate that a deep-water formation process significantly affected the seabed dynamics during regional climatically cold phases during the last c. 7,000 years. We propose that, during the colder periods (e.g. the Little Ice Age), newly formed bottom waters likely caused widespread re-suspension of organic carbon-rich laminated sediments that were deposited during the preceding warm periods in shallower areas, and this material was transported to and re-deposited in the deeper parts of the Baltic Sea sub-basins. In our scenario, a topographic feature, known as the Baltic Sea Klint, acted as a hydrographic barrier for deep-water formed in the northern Baltic. Thus, during the cold periods increased lateral matter influx from the northern Baltic led to the accumulation of much thicker macroscopically homogenous clayey sediments in sub-basins north of the Klint. Moreover, deep-water formation produced bottom currents that led to the formation of sediment contourite drifts at water depths of> 200 m in the Bothnian Sea, the Aland Deep and northern central Baltic Sea sub-basins. Bottom water ventilation in the Baltic Sea is generally assumed to be determined solely by the inflow of oxygen-rich, saline water from the North Sea, but we challenge this assumption and postulate that deep-water formation is a key process that ventilates the bottom waters of the Baltic Sea during climatically cold periods with substantial implications for its sedimentary archive.

  • 289.
    Nemchin, A. A.
    et al.
    Curtin Univ, Sch Earth & Planetary Sci, Bentley, WA, Australia..
    Norman, M. D.
    Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia..
    Grange, M. L.
    Swedish Museum Nat Hist, S-10405 Stockholm, Sweden..
    Zeigler, R. A.
    NASA Johnson Space Ctr, Astromat Acquisit & Curat Off, Houston, TX USA..
    Whitehouse, M. J.
    Swedish Museum Nat Hist, S-10405 Stockholm, Sweden..
    Muhling, J. R.
    Univ Western Australia, Sch Earth Sci, Perth, WA 6009, Australia..
    Merle, Renaud E.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    U-Pb isotope systematics and impact ages recorded by a chemically diverse population of glasses from an Apollo 14 lunar soil2022Inngår i: Geochimica et Cosmochimica Acta, ISSN 0016-7037, E-ISSN 1872-9533, Vol. 321, s. 206-243Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Glass beads formed by ejection of impact-melted lunar rocks and soils are an important component of lunar soils. These glasses range from 100s of microns to up to a few cm in diameter and contain variable, but usually relatively low (several hundred ppb to a few ppm), quantities of U. Because Pb is a volatile element, it tends to be lost from the melts, so individual impact glasses can be dated by the U-Th-Pb isotopic systems. The presence of two additional Pb components in lunar glasses, likely linked to addition of lunar Pb to the beads during their residence on the lunar surface and from terrestrial laboratory contamination, require corrections to the data before accurate formation ages of the glasses can be determined. Here we report a U-Th-Pb isotopic and geochemical study of impact glasses from the Apollo 14 soil 14163, which documents multiple impacts into chemically diverse targets that can be linked to the main groups of rocks found on the Moon, i.e., mare basalts, highlands plagioclase-rich rocks, and KREEP (from high contents of K, REE and P) enriched rocks. The impact ages show a bimodal distribution with peaks at ~3500-3700 Ma and < 1000 Ma, similar to that obtained previously by Ar-40-Ar-39 dating of other suites of lunar regolith glasses. Our data suggest two predominant age peaks at ~100 Ma and ~500 Ma, with other statistically definable clusters of ages also possible. As Pb is relatively resistant to subsolidus diffusive loss in these glasses, the age clusters probably represent primary formation ages during impact events, although processes such as preferential preservation of young glasses and impact conditions necessary for production of regolith glasses need further quantification. (C) 2021 The Authors. Published by Elsevier Ltd.

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  • 290.
    Niezabitowska, D. K.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Dept Magnetism, Ksiec Janusza St 64, PL-01452 Warsaw, Poland..
    Szaniawski, R.
    Dept Magnetism, Ksiec Janusza St 64, PL-01452 Warsaw, Poland..
    The Holy Cross Mountains (Poland) terranes palaeoposition and depositional environment in Silurian: New insights from rock magnetic studies2023Inngår i: Geophysical Journal International, ISSN 0956-540X, E-ISSN 1365-246X, Vol. 234, nr 3, s. 1531-1549Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Holy Cross Mountains (HCM) in Poland, is an isolated natural outcrop of Palaeozoic rocks located within the Trans-European Suture Zone, a tectonic collage of continental terranes adjacent to the Tornquist margin of the Baltica. This uniqueness made the HCM a target for palaeogeographic research. Based on the facies differences, the HCM had been divided into two major units, the southern (the Kielce Unit) and northern (the Lysogory Unit) part (SHCM and NHCM, respectively). Their position in relation to each other and the Baltica continent during Silurian times is still a matter of discussion, whether both parts of the HCM were separated terranes located along the Baltica margin or they shared in common palaeogeographic history. Here, we present the results of comprehensive rock magnetic measurements applied as a tool to interpret palaeoenvironmental conditions during deposition and burial and therefore allow discussion about the terranes' relative position. To recognize the magnetic mineral composition and texture of studied Silurian graptolitic shales several rock magnetic measurements were conducted including low-temperature Saturated Isothermal Remanent Magnetization, thermal demagnetization of three-component IRM and hysteresis measurements, as well as anisotropy of magnetic susceptibility (AMS). The sampled rocks come from both units of the HCM. In all analysed samples we found single domain (SD) stoichiometric magnetite of mostly diagenetic (i.e. post-depositional) origin and goethite resulting likely from weathering. In turn, detrital magnetite, even if observed in previously investigated Silurian rocks from the Baltica margin, was not identified in this study, what we attribute to dissolution during diagenesis in the deep-water environment. Solely in the NHCM, SD hematite and maghemite grains were observed, which we interpret as detrital in origin. These grains have been preserved in the suboxic environment of the NHCM sub-basin bottom waters due to their resistance to dissolution in marine waters. Considering the deposition conditions (oxygenation of the near-bottom zone) rather similar for both HCM parts, we associate the presence of aeolian hematite grains solely in the NHCM rocks with a more proximal position of the NHCM than the SHCM in relation to the Baltica continent during late Llandovery (Silurian). This conclusion agrees with some existing palaeogeographic models. In addition to petromagnetic studies focused on the analysis of ferromagnets, AMS measurements were also carried out. The results indicate that the magnetic susceptibility is mainly governed by paramagnetic minerals, mostly phyllosilicates with small ferromagnetic contributions. Oblate AMS ellipsoid and distinct bedding parallel foliation indicate prevailing sedimentary-compactional alignment. Observed magnetic lineation of tectonic origin resulting from weak strain is related presumably to Variscian deformations.

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  • 291. Norstrom, E.
    et al.
    Neumann, F. H.
    Scott, L.
    Smittenberg, R. H.
    Holmstrand, H.
    Lundqvist, S.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Sundqvist, H. S.
    Risberg, J.
    Bamford, M.
    Late Quaternary vegetation dynamics and hydro-climate in the Drakensberg, South Africa2014Inngår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 105, s. 48-65Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A multi-proxy study of a sediment sequence from Braamhoek wetland, covering the last c. 16,000 years, reveals a record of regional climate and vegetation dynamics in the Drakensberg region, South Africa, including signals from both the organic sediment fraction (fossil pollen, charcoal, n-alkane abundance, n-alkane delta C-13, TOC) and the inorganic fraction (mineral magnetic properties). The reconstruction, supported by a robust chronology, indicates two major periods of increased regional wetness during the late Pleistocene to early Holocene phase (c. 13,800-12,600 cal yr BP; c. 10,200-8500 cal yr BP) and one during the late Holocene (c. 2000 cal yr BP to present). Drier conditions are recorded during the Younger Dryas (c. 12,600-11,300 cal yr BP) and mid-Holocene (c. 7000-2000 cal yr BP). A major decline in fynbos vegetation during the early Holocene suggests a shift towards warmer temperatures and possibly towards less pronounced winter rains in eastern South Africa from c. 8500 cal yr BP. Comparison with records from interior of South Africa show relatively high inter-site variability, however, the Braamhoek moisture proxies do co-vary with the speleothem isotope records from Makapansgat, suggesting a similar hydro-climate evolution in eastern and interior parts of the summer rainfall region during the studied period. On multi-millennial time scales, an inverse hydro-climatological pattern is evident between these two South African records and reconstructions from tropical locations in southeast Africa. Such a rainfall dipole between eastern tropical and southern Africa, has previously been identified on shorter time scales, i.e. on inter-annual to millennial scales. The Braamhoek study suggests that a similar dipole pattern is acting also on a multi-millennial perspective. These long-term precipitation anomalies are tentatively coupled to teleconnections from multi-millennial changes in the dynamics of the Indian Ocean Dipole (IOD) and El Nino-Southern Oscillation (ENSO). 

  • 292.
    Obrochta, S. P.
    et al.
    Akita Univ, Grad Sch Int Resource Sci, Akita, Japan..
    Andren, T.
    Sodertorn Univ, Sch Nat Sci, Huddinge, Sweden..
    Fazekas, S. Z.
    Akita Univ, Grad Sch Engn Sci, Akita, Japan..
    Lougheed, Bryan C.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Yokoyama, Y.
    Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba, Japan..
    Miyairi, Y.
    Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba, Japan..
    Kondo, R.
    Kogakuin Univ, Educ Dev Ctr, Tokyo, Mie, Japan..
    Kotilainen, A. T.
    Geol Survey Finland, Marine Geol, Espoo, Finland..
    Hyttinen, O.
    Univ Helsinki, Dept Geosci & Geog, Helsinki, Finland..
    Fehr, A.
    Rhein Westfal TH Aachen, Inst Appl Geophys & Geothermal Energy, Aachen, Germany..
    The undatables: Quantifying uncertainty in a highly expanded Late Glacial-Holocene sediment sequence recovered from the deepest Baltic Sea basin-IODP Site M00632017Inngår i: Geochemistry Geophysics Geosystems, E-ISSN 1525-2027, Vol. 18, nr 3, s. 858-871Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Laminated, organic-rich silts and clays with high dissolved gas content characterize sediments at IODP Site M0063 in the Landsort Deep, which at 459 m is the deepest basin in the Baltic Sea. Cores recovered from Hole M0063A experienced significant expansion as gas was released during the recovery process, resulting in high sediment loss. Therefore, during operations at subsequent holes, penetration was reduced to 2 m per 3.3 m core, permitting expansion into 1.3 m of initially empty liner. Fully filled liners were recovered from Holes B through E, indicating that the length of recovered intervals exceeded the penetrated distance by a factor of > 1.5. A typical down-core logarithmic trend in gamma density profiles, with anomalously low-density values within the upper similar to 1 m of each core, suggests that expansion primarily occurred in this upper interval. Thus, we suggest that a simple linear correction is inappropriate. This interpretation is supported by anisotropy of magnetic susceptibility data that indicate vertical stretching in the upper similar to 1.5 m of expanded cores. Based on the mean gamma density profiles of cores from Holes M0063C and D, we obtain an expansion function that is used to adjust the depth of each core to conform to its known penetration. The variance in these profiles allows for quantification of uncertainty in the adjusted depth scale. Using a number of bulk C-14 dates, we explore how the presence of multiple carbon source pathways leads to poorly constrained radiocarbon reservoir age variability that significantly affects age and sedimentation rate calculations.

  • 293.
    Ojala, Antti E. K.
    et al.
    Geol Survey Finland, Vuorimiehentie 5, FIN-02151 Espoo, Finland.
    Saarnisto, Matti
    Mikonkatu 22 D 46, FIN-00100 Helsinki, Finland.
    Jungner, Hogne
    Univ Helsinki, POB 64, FIN-00014 Helsinki, Finland.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Muscheler, Raimund
    Lund Univ, Dept Geol, Solvegatan 12, SE-22362 Lund, Sweden.
    Biases in radiocarbon dating of organic fractions in sediments from meromictic and seasonally hypoxic lakes2019Inngår i: Bulletin of the Geological Society of Finland, ISSN 0367-5211, Vol. 91, s. 221-235Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We present here radiocarbon dating results from two boreal lakes in Finland, which are permanently (meromictic) or seasonally stratified and contain continuous sequences of annually laminated sediments that started to form in the early Holocene. The radiocarbon dating results of different organic components were compared with the varve-based sediment chronologies. The deviation between the Lake Valkiajarvi varve chronology (8400 varve years 2-3% error estimate) and 33 C-14 dates taken from insoluble and soluble organic phases vary inconsistently throughout the Holocene. In extreme cases mean calibrated radiocarbon dates with 95.4% confidence levels (2 sigma) are -2350 and +2040 years offset when compared with the varve chronology. On average, the radiocarbon dates are offset by ca. +550 years. The deviation between the Lake Nautajarvi varve chronology (9898 varve years +/- 1% error estimate) and 26 C-14 dates analyzed with conventional and AMS methods indicates that radiocarbon dates are systematically older by 500-1300 years (about 900 years on average). This significant offset mean that radiocarbon dates obtained from organic bulk sediment of meromictic and seasonally hypoxic lakes must be cautiously interpreted because of the reservoir effect and carbon cycling at the sediment-water interface. Direct evidence was obtained from the dating of soluble fraction and insoluble organic matter from near bottom water in the monimolimnion of Lake Valkiajarvi, which yielded C-14 ages of 560 +/- 80 BP and 2070 +/- 140 BP, respectively. Our study reinforces previous results that age-depth models based on bulk sediment radiocarbon dates obtained on sediments of stratified lakes are of limited value for accurate dating of changes in land use and especially the commence of agriculture.

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    FULLTEXT01
  • 294.
    Olsson, Erik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Water use in the Chinese coal industry2015Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    Freshwater resources are getting increasingly scarce throughout the world. In 21th century China, coal is the fuel of the nation’s economic growth. Coal is also the nation’s largest source of industrial water use. The objective of this thesis is to project water use in the Chinese coal industry up until 2035 by presenting two scenarios simulating two different approaches to water management policies.Literature studies makes up the base for estimating water use in three stages in the coal’s life cycle; mining, washing, and combustion. Through univariate sensitivity analysis, significant parameters are identified and included in the scenario modeling. Key for the study is the separation of water withdrawal rates and water consumption rates.The results indicate that future coal production and electricity demand have strong influence on water consumption. The coal industry’s water consumption is expected to have increased by 18-28% by 2035 depending on water use policies. By 2035, a business-as-usual scenario (BAU) will have increased annual water consumption by 24-63% from current levels, compared to an increase of 6-35% in a water saving scenario (WS). In terms of water withdrawal by 2035, the results show a 18-47% increase in the BAU scenario and a 9% decrease to 13% increase in the WS scenario. It is concluded that water management has high potential in mitigating and reducing water withdrawal rates, but failure to do so may result in a significant increase.

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    fulltext
  • 295.
    O'Regan, Matt
    et al.
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden;Stockholm Univ, Bolin Ctr Cilmate Res, Stockholm, Sweden.
    Coxall, Helen K.
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden;Stockholm Univ, Bolin Ctr Cilmate Res, Stockholm, Sweden.
    Cronin, Thomas M.
    US Geol Survey, Florence Bascom Geosci Ctr, 959 Natl Ctr, Reston, VA 22092 USA.
    Gyllencreutz, Richard
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden;Stockholm Univ, Bolin Ctr Cilmate Res, Stockholm, Sweden.
    Jakobsson, Martin
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden;Stockholm Univ, Bolin Ctr Cilmate Res, Stockholm, Sweden.
    Kaboth, Stefanie
    Heidelberg Univ, Inst Earth Sci, Heidelberg, Germany;Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan.
    Lowemark, Ludvig
    Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan.
    Wiers, Steffen
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    West, Gabriel
    Stockholm Univ, Dept Geol Sci, Stockholm, Sweden;Stockholm Univ, Bolin Ctr Cilmate Res, Stockholm, Sweden.
    Stratigraphic Occurrences of Sub-Polar Planktic Foraminifera in Pleistocene Sediments on the Lomonosov Ridge, Arctic Ocean2019Inngår i: Frontiers in Earth Science, E-ISSN 2296-6463, Vol. 7, artikkel-id 71Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Turborotalita quinqueloba is a species of planktic foraminifera commonly found in the sub-polar North Atlantic along the pathway of Atlantic waters in the Nordic seas and sometimes even in the Arctic Ocean, although its occurrence there remains poorly understood. Existing data show that T. quinqueloba is scarce in Holocene sediments from the central Arctic but abundance levels increase in sediments from the last interglacial period [Marine isotope stage (MIS) 5, 71-120 ka] in cores off the northern coast of Greenland and the southern Mendeleev Ridge. Turborotalita also occurs in earlier Pleistocene interglacials in these regions, with a unique and widespread occurrence of the less known Turborotalita egelida morphotype, proposed as a biostratigraphic marker for MIS 11 (474-374 ka). Here we present results from six new sediment cores, extending from the central to western Lomonosov Ridge, that show a consistent Pleistocene stratigraphy over 575 km. Preliminary semi-quantitative assessments of planktic foraminifer abundance and assemblage composition in two of these records (LOMROG12-7PC and AO16-5PC) reveal two distinct stratigraphic horizons containing Turborotalita in MIS 5. Earlier occurrences in Pleistocene interglacials are recognized, but contain significantly fewer specimens and do not appear to be stratigraphically coeval in the studied sequences. In all instances, the Turborotalita specimens resemble the typical T. quinqueloba morphotype but are smaller (63-125 mu m), smooth-walled and lack the final thickened calcite layer common to adults of the species. These results extend the geographical range for T. quinqueloba in MIS 5 sediments of the Arctic Ocean and provide compelling evidence for recurrent invasions during Pleistocene interglacials.

    Fulltekst (pdf)
    fulltext
  • 296.
    Orlikowska, Ewa H.
    et al.
    Swedish Univ Agr Sci SLU, Sch Forest Management, Box 43, S-73921 Skinnskatteberg, Sweden..
    Svensson, Johan
    Swedish Univ Agr Sci SLU, Dept Wildlife Fish & Environm Studies, S-90183 Umea, Sweden..
    Roberge, Jean-Michel
    Swedish Univ Agr Sci SLU, Dept Wildlife Fish & Environm Studies, S-90183 Umea, Sweden.;Swedish Forest Agcy, Box 284, S-90106 Umea, Sweden..
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Mikusinski, Grzegorz
    Swedish Univ Agr Sci SLU, Sch Forest Management, Box 43, S-73921 Skinnskatteberg, Sweden.;Swedish Univ Agr Sci SLU, Dept Ecol, Grimso Wildlife Res Stn, S-73091 Riddarhyttan, Sweden..
    Hit or miss?: Evaluating the effectiveness of Natura 2000 for conservation of forest bird habitat in Sweden2020Inngår i: Global Ecology and Conservation, ISSN 2351-9894, Vol. 22, artikkel-id e00939Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Biodiversity conservation often requires a landscape perspective. When establishing the Natura 2000 (N2k) network, the effectiveness of the sites and the influence of the surrounding landscapes for species of interest was often disregarded. We analyzed the effectiveness of N2k sites in Sweden for three forest bird species of conservation interest in the European boreal landscapes: lesser spotted woodpecker (LSW), Siberian jay (SJ) and hazel grouse (HG). Our objectives were to: 1) quantify effective suitable habitat area in N2k sites with and without consideration of the adjoining landscapes; 2) examine effective habitat area within N2k sites along the north-south vegetation gradient 3) analyze functionality of N2k sites and assess how forests outside the sites affect habitat suitability inside N2k. GISbased habitat suitability index models were applied to calculate the amount of effective habitat within and outside N2k sites. N2k sites contributed with 10% (HG), 13% (SJ) and 51% (LSW) suitable habitat identified in Sweden. Functionality of forest environments as habitat was higher inside N2k sites for LSW within all vegetation zones, and for SJ in the Alpine and Middle Boreal zones; for HG habitat outside the sites was more functional in all zones accept Alpine and Middle Boreal. The majority of N2k sites were of quite small size (<500 ha) and the size influenced their functionality for LSW and HG, with larger N2k sites being more functional. For SJ, however, average functionality of N2k sites was not influenced by their size. The largest average habitat increase linked to considering the contribution of areas outside N2k sites for their functionality as habitat was for the N2k sites of smaller size (1-500 ha). Therefore, the presence and quality of forests outside of N2k sites are of a greater importance for smaller sites, and as such these should be carefully managed. To improve conservation efficiency of the N2k sites in Sweden, we call for incorporating them into the development and implementation of the regional Green Infrastructure plans. (C) 2020 The Authors. Published by Elsevier B.V.

    Fulltekst (pdf)
    fulltext
  • 297.
    Orlikowska, Ewa
    et al.
    Swedish Univ Agr Sci SLU, Sch Forest Management, Box 43, S-73921 Skinnskatteberg, Sweden.
    Roberge, Jean-Michel
    Swedish Univ Agr Sci SLU, Dept Wildlife Fish & Environm Studies, S-90183 Umea, Sweden; Swedish Univ Agr Sci SLU, Dept Forest Resource Management, NILS, S-90183 Umea, Sweden.
    Blicharska, Malgorzata
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. wedish Univ Agr Sci SLU, Swedish Biodivers Ctr, Box 7016, S-75007 Uppsala, Sweden.
    Mikusinski, Grzegorz
    Swedish Univ Agr Sci SLU, Sch Forest Management, Box 43, S-73921 Skinnskatteberg, Sweden; Swedish Univ Agr Sci SLU, Dept Ecol, Grimso Wildlife Res Stn, S-73091 Riddarhyttan, Sweden.
    Gaps in ecological research on the world's largest internationally coordinated network of protected areas: A review of Natura 20002016Inngår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 200, s. 216-227Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Natura 2000 (N2k) is a multinational and" coordinated conservation network designated to support the long-term survival of Europe's most valuable species and habitats. It is the key conservation tool in the European Union. We reviewed 510 peer-reviewed publications (period 1998-2014) focusing on ecological aspects of N2k, with the aims of identifying key research gaps and proposing future research priorities for improved conservation success. We categorized the articles by spatial scale, biogeographical regions, taxonomic groups, habitat types, and the analytical methods used. The majority of studies were performed in single N2k sites or at the regional level within countries. The Mediterranean region had the greatest number of publications and the terrestrial Black Sea, Macaronesia, Pannonian and Steppic regions were overrepresented in relation to their total area and to the area of N2k sites that they comprised. Grasslands, freshwater and wetland habitats were overrepresented in comparison to their area within N2k. Plants were the most commonly studied taxonomic group and quantitative empirical studies dominated. Future N2k research should address knowledge gaps by directing more efforts towards: 1) the Boreal region, 2) alpine, agricultural, forest and marine habitats, and 3) under represented taxonomic groups such as reptiles, amphibians, lichens and fungi. For enhanced evaluation and realization of the conservation potential of N2k, more studies will need to encompass large spatial scales and utilize modelling approaches to effectively address future climate and land-use changes.

  • 298.
    Paik, Seung-A
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Scientometric Analysis and Scoping Review on Healthcare Systems’ Sustainability during the COVID-19 Pandemic2021Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    Background: The COVID-19 pandemic calls attention to the importance of sustainable healthcare systems. Frail healthcare systems can become overwhelmed during public health crises, further exacerbating the human, economic, and political toll. Significant work has been done to describe the general attribute of sustainability and resilience in healthcare systems during crises. The next step would be to identify the research domains that has been highlighted during COVID-19 pandemic in order to reflect and achieve further sustainability in healthcare systems. 

    Methods: A scoping review of the literature was conducted to identify recurring themes, research domains and capacities needed to maintain healthcare systems’ sustainability in COVID-19 outbreak. Until 13 December 2020, six electronic databases were searched using specific keywords such as ‘sustainability,’ ‘resilience,’ and ‘surge capacity’ in ‘healthcare systems.’ Peer-reviewed articles went through a scientometric analysis mapping research fields, domains, study destinations and keywords. 

    Results: 104 studies met the inclusion criteria – majority (75%) focused on medical research followed by interdisciplinary (12%), social science (5%), and environment studies (5%). Originally identified domains of healthcare systems’ sustainability research included ‘capacity calculation,’ ‘telehealth,’ ‘environment,’ ‘inequity,’ ‘data,’ ‘holistic nexus planning,’ ‘social & environmental risk factor,’ ‘transport connectivity,’ and ‘vulnerability.’ 

    Conclusion: This scoping review represents a systematic assessment of the research domains of healthcare systems’ sustainability during COVID-19 pandemic. Further refined and broadened sustainability framework is required so that healthcare systems can simultaneously achieve sustainable transformations in healthcare practice and health service delivery as well as improve their preparedness for emergencies. 

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    fulltext
  • 299.
    Pargman, Daniel
    et al.
    KTH Royal Inst Technol, Sch Comp Sci & Commun, Stockholm, Sweden..
    Eriksson, Elina
    KTH Royal Inst Technol, Sch Comp Sci & Commun, Stockholm, Sweden..
    Höök, Mikael
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Tanenbaum, Joshua
    Univ Calif Irvine, Dept Informat, Irvine, CA USA..
    Pufal, Marcel
    Univ Calif Irvine, Dept Informat, Irvine, CA USA..
    Wangel, Josefin
    KTH Royal Inst Technol, Sch Architecture & Built Environm, Stockholm, Sweden..
    What if there had only been half the oil?: Rewriting history to envision the consequences of peak oil2017Inngår i: Energy Research & Social Science, ISSN 2214-6296, E-ISSN 2214-6326, Vol. 31, nr SI, s. 170-178Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    There is unequivocal evidence that we are facing the greatest energy transition since the dawn of the industrial age. We need to urgently shift from a global fossil fuel and CO2-emitting energy system to 1) decrease our CO2 emissions and combat the effects of climate change and 2) face a future of depleting fossil fuel resources. Yet there is still a lack of collective action to start taking effective measures to meet these challenges. We argue that there is a need for narratives in general and for a special type of narrative in particular, allohistorical scenarios, that act as thought experiments whose main function is to defamiliarize us with what is taken for granted. Such scenarios invite us to explore plausible parallel paths, thereby making it possible to imagine futures that are essentially different from the path-dependence of an unyielding historical past. Such futures enable us to grapple with a present that is saturated by the inertia of past decisions and the sunken costs of existing infrastructure. We here present the design rationale for the Coalworld scenario: an alternative world where only half the oil ever existed. We also describe the methodology and the assumptions that underlie the Coalworld scenario.

  • 300.
    Persson-Fischier, Ulrika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för samhällsbyggnad och industriell teknik, Industriell teknik.
    Lindström, Göran
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för samhällsbyggnad och industriell teknik, Industriell teknik.
    Larsson, Magnus
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för samhällsbyggnad och industriell teknik.
    Rönnbäck, Patrik
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Fishing for sustainability: a case about recreational fishing, tourism, and sustainable entrepreneurship2022Inngår i: Reframing the Case Method in Entrepreneurship Education: Cases from the Nordic Countries / [ed] Karin Wigger, Lise Aaboen, Dag Haneberg, Siri Jakobsen & Thomas Lauvås, Cheltenham; Northampton: Edward Elgar Publishing, 2022, s. 150-162Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    In this case we follow the development of a tourism business in Sweden with high sustainability ambitions. We explore how the entrepreneur started, ran, and expanded his business, which offers recreational fishing for high-end customers from all over the world. The new firm works with value propositions, dealing with the common challenges of uncertainty, trying to get external funding, and finding suitable partners, all in light of sustainability—that is, the ways the entrepreneur tries to adjust his economic activities to the maximum carrying capacity, by carefully managing the natural resources his business relies upon (wild fish stock and the pristine wilderness of his sites). He is also trying to cooperate with and provide benefits to the local community in which his business operates. This case also illustrates some of the obstacles the entrepreneur encounters: the risk of losing access to the natural resource he relies upon as the local Sámi people suddenly, by court verdict, obtain exclusive rights to the fish; the problems of hiring local staff to benefit the community as they have other unpredictable activities to attend to (reindeer herding); the way his business credibility for the high-end market is threatened when local customers are served as they comprise a very different social segment; whether it is possible to claim a sustainable business as it involves a lot of air travel. This case provides learning opportunities connected to some of the challenges involved when trying to run a business, taking as points of departure the limits of nature and contributing socially while maintaining financial viability. Through this, the student will gain insights into many sustainability challenges facing an entrepreneurial venture.

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