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  • 151.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Berg-Madsen, Vivianne
    Uppsala University, Music and Museums, Museum of Evolution.
    Mannen som samlade på fossil2011Other (Other (popular science, discussion, etc.))
  • 152.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Berg-Madsen, Vivianne
    Uppsala University, Music and Museums, Museum of Evolution.
    Wiman’s legacy: 100 years of palaeontology in Sweden2011Other (Other (popular science, discussion, etc.))
  • 153.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Fortey, Richard A.
    Natural History Museum, London.
    Stratigraphy and trilobite biofacies of the Late Ordovician (Katian) of the Taimyr Peninsula, Arctic Russia2018In: International Conference on Arctic Margins, 2018Conference paper (Refereed)
    Abstract [en]

    The thick Late Ordovician (Katian) succession on the Taimyr Peninsula, Arctic Russia is divided into three regions showing a transition from a southern carbonate dominated facies, a central transitional facies, and a siliciclastic dominated northern facies. All regions are rich in trilobites but hitherto only the southern fauna was described. New collections have been added to this and allow a division into two very different biofacies for the Katian succession. Black limestone and shales have taxa similar to those of the peripheral Laurentian Scoto-Appalachian belt (Ampyxella, Ampxyina, Failleana, Pararemopleurides, Raymondella, Remopleurides, Robergia, Stygina, Taimyraspis, Telephina, and Toernquistia), and is termed the raphiophorid association. Further subdivisions may be possible, but the small number of new collections does not allow this at the moment. From shelf limestone a contrasting fauna contains monorakine trilobites (Carinopyge, Ceratevenkaspis, Elasmaspis, Evenkaspis, and Monorakos) endemic to the Siberian platform. Trilobites such as isotelines, Calyptaulax, Xylabion, and Cheirurus otherwise typical of inshore Laurentia co-occur with this fauna. This biofacies is termed the monorakine-cheirurid-illaenid association. Our results show that the Taimyr Peninsula, as an open shelf marginal to the Siberian Platform, typically would have the endemic monorakine-cheirurid-illaenid association, while similar conditions to those on the eastern fringes of the Iapetus Ocean permitted a short lived establishment of comparable faunas of the raphiophorid association.

  • 154.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Hybertsen, Frida
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. Swedish Museum Nat Hist, Dept Palaeobiol, Box 500 07, S-10405 Stockholm, Sweden..
    Hogstrom, Anette E. S.
    UiT Arctic Univ Norway, Arctic Univ Museum Norway, N-9037 Tromso, Norway..
    Jensen, Soren
    Univ Extremadura, Fac Ciencias, Area Paleontol, Avenida Fis S-N, Badajoz 06006, Spain..
    Palacios, Teodoro
    Univ Extremadura, Fac Ciencias, Area Paleontol, Avenida Fis S-N, Badajoz 06006, Spain..
    Taylor, Wendy L.
    Univ Cape Town, Dept Geol Sci, Private Bag 103, ZA-7701 Rondebosch, South Africa..
    Agic, Heda
    Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA..
    Hoyberget, Magne
    Magne Hoyberget, Rennesveien 14, N-4513 Mandal, Norway..
    Meinhold, Guido
    Univ Gottingen, Geosci Ctr, Dept Sedimentol & Environm Geol, Goldschmidtstr 3, D-37077 Gottingen, Germany.;Keele Univ, Sch Geog Geol & Environm, Keele ST5 5BG, Staffs, England.;TU Bergakademie Freiberg, Inst Geol, Bernhard Von Cotta Str 2, D-09599 Freiberg, Germany..
    Distribution and correlation of Sabellidites cambriensis (Annelida?) in the basal Cambrian on Baltica2022In: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 159, no 7, p. 1262-1283, article id PII S0016756821001187Article in journal (Refereed)
    Abstract [en]

    Sabellidites cambriensis is a tubular non-mineralized metazoan that appears as compressed ribbon-shaped imprints with transverse wrinkling, thick walls and an even tube diameter of up to 3 mm. The distribution of Sabellidites is investigated in three Ediacaran-Cambrian sections on the Digermulen Peninsula in Arctic Norway, spanning the Manndrapselva Member of the Stahpogieddi Formation and the lower member of the Breidvika Formation. Here, the Ediacaran-Cambrian boundary is located in the lower part of the upper parasequence (third cycle) of the Manndrapselva Member. Specimens of Sabellidites are rare but consistently present close to the lowest level of Treptichnus pedum and upsection, whereas the taxon is common and abundant in the lower part of the lower member of the Breidvika Formation, with an upper record at c. 55 m above the base. The range is comparable with that of the GSSP section in Newfoundland, Canada, establishing Sabellidites as an index fossil for the lowermost Cambrian. In the Manndrapselva Member, Sabellidites co-occurs with the acritarch Granomarginata, indicative of the lowermost Cambrian Granomarginata Zone, whereas in the Breidvika Formation it co-occurs with Asteridium. Sabellidites is widely distributed in Baltica, through the Rovnian and Lontovan regional stages but confined to the Fortunian global stage. In its lower range, Sabellidites is associated with a Treptichnus pedum trace fossil association and a depauperate leiosphaerid acritarch assemblage, followed by a Granomarginata assemblage. In its upper range, Sabellidites co-occurs with acritarchs of the Asteridium-Comasphaeridium Zone and the tubular foraminiferan Platysolenites. In Baltica, Sabellidites is a useful index fossil.

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  • 155.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Hybertsen, Frida
    Högström, Anette
    Tromsø Universitetsmuseum.
    Jensen, Sören
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Meinhold, Guido
    Geowissenschaftliches Zentrum der Universität Göttingen, Germany.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Agic, Heda
    Department of Earth Science, University of California at Santa Barbara, Santa Barbara, USA.
    Palacios, Teodor
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Distribution of Sabellidites (Annelida?) in the Ediacaran-Cambrian succession on the Digermulen Peninsula, Arctic Norway2018In: 5th International Palaeontological Conference, 2018, p. 321-Conference paper (Refereed)
  • 156.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Högström, Anette
    Tromsø Universitetsmuseum.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Trilobites from the North: lower Cambrian olenelloids fromthe Digermulen Peninsula, Arctic Norway2016In: 3. Trilobiten-Tagung [Berlin, 8. und 9. Oktober 2016] - Kurzfassungen der Vortrage / [ed] Zwanzig, M., Halle, Saale: Ampyx-Verlag , 2016Conference paper (Other academic)
    Abstract [en]

    Scandinavian lower Cambrian stratigraphy is largely trilobite based, defined by the occurrence of distincttrilobite assemblages with classic olenelloid trilobites like Holmia and Kjerulfia. Except for a few localities in Scandinavia where these taxa are fairly common, most occurrences are represented by a single or a fewincomplete specimens at the best. Since 2011 a collecting effort in the lower Cambrian strata on the Digermulen Peninsula, Arctic Norway has yielded close to 100 specimens of at least three different olenelloid trilobite taxa, including Kjerulfia lata, Kjerulfia sp. and Elliptocephalus sp., as well as an ellipsocephalid. These specimens are found in a narrow stratigraphical interval in the silty mudstone of the Duolbagaisa Formation,and are accompanied by rich material of organic walled microfossils and trace fossils. The age constraints onthe occurrence are therefore well established, placing the trilobites in the Holmia kjerulfi assemblage Zone.Compared to the classical T0mten locality in the Mjösa area, southern Norway, the Digermulen Peninsula assemblage lacks Holmia kjerulfi. Ellipsocephalids are found with the new material and also slightly higher in the succession. Although the occurrence of trilobites in the Duolbagaisa Formation have been known for along time, the new extensive trilobite material is both better preserved and more abundant, even compared tomost other places in Scandinavia. This ensures that this succession will be a major reference for lower Cambrian trilobite zonation in this part of the world.

  • 157.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Högström, Anette
    Tromsø Universitetsmuseum.
    Jensen, Sören
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Meinhold, Guido
    Geowissenschaftliches Zentrum der Universität Göttingen, Germany.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Palacios, Teodor
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Novis, Linn K.
    Tromsø Universitetsmuseum.
    Ou, Zhiji
    Tromsø Universitetsmuseum.
    The Ediacaran succession and fauna of the Digermulen Peninsula, northern Norway2016In: Bulletin of the Geological Society of Finland, Special volume, 2016, p. 196-197Conference paper (Other academic)
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  • 158.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Högström, Anette
    Tromsø Universitetsmuseum.
    Meinhold, Guido
    Geowissenschaftliches Zentrum der Universität Göttingen, Germany.
    Jensen, Sören
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Palacios, Teodor
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Novis, Linn K.
    Tromsø Universitetsmuseum.
    Ou, Zhiji
    Tromsø Universitetsmuseum.
    Stratigraphy of the Ediacaran and basal Cambrian of the Digermulen Peninsula, Northern Norway2015In: Geological Society of America Abstracts with Programs, vol 47, 2015, Vol. 47Conference paper (Other academic)
    Abstract [en]

    The succession of the Digermulen Peninsula in Finnmark, northern Norway, is the only fossiliferous site inScandinavia with sedimentation across the Ediacaran–Cambrian transition without a significant hiatus. Geologicalinvestigations started in the 1930’s, but the Peninsula was first mapped in the 60’s. Ediacara-type fossils werefirst discovered in the late 80’s but recent discoveries will establish the Digermulen Peninsula as one of the mostsignificant Ediacaran sites in northern Europe. The parautochthonous strata are exposed in the Tanafjord areaalong the coast and in valleys on the east side of the Peninsula. The beds dip slightly to the west with the strikefollowing the coastline (ca. 045°). The Ediacaran succession is close to 1000 m thick and dominantly siliciclastic.It starts with interglacial sediments of the Nyborg Formation (tentatively the earliest Ediacaran), overlying astacked succession of diamictites of the Cryogenian Smalfjord Formation. After a hiatus follows the glaciogenicdiamictites of the Mortensnes Formation (~60 m thick), which is commonly seen to represent the ~582 Ma-oldGaskiers glaciation. Upwards, the contact to the overlying Stáhpogiedde Formation is not exposed locally, but hasbeen shown to represent a hiatus followed by transitional fluvial to marine sediments of the Lillevannet Member.Ediacaran-type fossils appear in the succeeding Innerelva Member. This is a two-cycle deepening upwardssuccession of laminated mudstone with intercalated sand bodies showing load structures. Preliminary microfossilssamples of the Member have so far proven almost barren, making dating more challenging. The basal part of thesucceeding Manndraperelva Member consists of three cycles; first a succession of reddish sandstone followed bytwo coarsening-upward cycles. Each starts with mudstone and fine sandstone and terminates in cross-beddedsandstone. The Ediacaran–Cambrian boundary is located within the third cycle, identified by the trace fossilTreptichnus pedum and associated trilobed trace fossils.The Digermulen Early Life Research Group has since2011 made significant new finds, and focused fieldwork aims to resolve tighter age constraints, provenance of thesediments and the range and diversity of the extended Ediacaran biota.

  • 159.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Högström, Anette
    Tromsø Universitetsmuseum.
    Palacios, Teodor
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Jensen, Sören
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Meinhold, Guido
    University of Keele, School of Geography, Geology and Environment.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Agic, Heda
    Department of Earth Science, University of California at Santa Barbara, Santa Barbara, USA.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Biostratigraphy and palaeontology of the lower Cambrian Duolbagáisá Formation on the Digermulen Peninsula, Arctic Norway2018In: International Conference on Arctic Margins, 2018Conference paper (Refereed)
    Abstract [en]

    The lower Cambrian sequence on the Digermulen Peninsula (Finnmark, Arctic Norway) is the northernmost extension of the Cambrian deposits along the Caledonian front. It is exceedingly thick compared to cratonal successions typical of most of Baltica. The Duolbagáisá Formation represents the youngest lower Cambrian unit on the peninsula with the first trilobite-bearing strata, a plethora of trace fossils including diverse arthropod traces and Plagiogmus arcuatus, and abundant and wellpreserved organic walled microfossils (OWM). Extensive field work by the Digermulen Early Life Research Group allows for the first time a detailed appreciation of the age and faunal composition of the unit. The lower member is ~250 m thick with thin-bedded siltstone, sandstone and mudstone. A single unidentifiable holmiid thorax region occurs alongside arthropod trace fossils. OWM indicate the S. ornata-F. membranacea Zone. The upper member is ~390 m thick and consist of several upward shallowing parasequences with fine-grained sandstone, siltstone and mudstone followed by thick mature quartzite. The trace fossil Syringomorpha occurs throughout the upper member and Cruziana and Rusophycus are especially abundant in the upper parts. The first identifiable olenellid trilobites occur in a thick mudstone/siltstone interval at the middle of the member, along with an elliptocephalid trilobite and other arthropods. Abundant OWM indicate the H. dissimilare-S. ciliosa Zone with the higher levels belonging to the Volkovia-Liepaina Zone. The entire sequence thus span the Cambrian Series 2, stages 3–5.

  • 160.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Høyberget, Magne
    Rennesveien 14, N-4513 Mandal, Norway.
    Högström, Anette
    Tromsø Universitetsmuseum.
    Jensen, Sören
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Taylor, Wendy L.
    Department of Geological Sciences, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa.
    Palacios, Teodor
    Área de Paleontología, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, Spain.
    Meinhold, Guido
    Geowissenschaftliches Zentrum der Universität Göttingen, Germany.
    Holmiid trilobites from the lower Cambrian of the Digermulen Peninsula, Arctic Norway2017In: 6th International Conference on Trilobites and their Relatives. Tallinn, Estonia, 7-10 July 2017 / [ed] Helje Pärnaste, Tallinn: Libris Est OU , 2017Conference paper (Refereed)
    Abstract [en]

    Lower Cambrian holmiid olenelloids are used for biozonation of lower Cambrian (Series 2) strata in Baltoscandia. About a dozen species have been named since the description of Holmia kjerulfi (Linnarsson, 1868), but except for the classical area in Mjøsa, Norway, the species traditionally occur in small numbers, are variably preserved, occur at one or a few localities only and usually with only one taxon present. Definitions of the biozones are therefore still problematic. One level in the lower Cambrian Duolbasgáissá Formation of the Digermulen Peninsula, Arctic Norway, has yielded more than 50 new specimens of holmiids, preliminarily assigned to Elliptocephala n. sp. and Kjerulfia n. sp. Acritarchs indicate the Heliosphaeridium dissimilareSkagia ciliosa acritarch Zone which corresponds to the traditional Holmia kjerulfi Assemblage Zone. Elliptocephala n. sp. is known from about a dozen specimens. It is characterized by very long palpebral lobes, a parallel-sided glabella, a short anterior glabellar lobe and short genal spines. A node is developed on the occipital ring. Semi-complete specimens show up to 10 thoracic segments, but the full number of thoracic segments and the pygidium is unknown. The slightly older E. lundgreni (Moberg, 1892), known from the Schmidtiellus mickwitzi Zone of southern Sweden, differs in the proportions of the glabella, the length of the palpebral lobes and definition of the cephalic border. Both H. mobergi and H. sulcata from Sweden show similarities to Elliptocephala n. sp. in the weakly developed lateral border with an effaced anterior border furrow. Nikolaisen & Henningsmoen (1987) described Kjerulfia lata Kiær, 1917 from two fragmentary specimens from this locality in Digermulen. More than 20 new specimens from this site shows that the species differs from Kjerulfia lata from the type area in southern Norway in proportions and features of the glabella, the width of the genal field and the possession of a stout and high spine on the occipital ring, and it is tentatively assigned to Kjerulfia n. sp. The material from the Digermulen Peninsula adds to the diversity of the Baltoscandian holmiids and is tightly constrained stratigraphically.

  • 161.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Isakar, Mare
    Microgastropods in the Ordovician of Baltoscandia: potentials and prospects2004In: WOGOGOB-2004 Conference materials / [ed] Olle Hints, Leho Ainsaar, 2004Conference paper (Other academic)
  • 162.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Lefebvre, Bertrand
    Laboratoire de Géologie de Lyon, UMR CNRS 5276, bât. Géode, Université Lyon 1, Campus de la Doua, 2, rue Dubois, 69622 Villeurbanne cedex, France.
    An unusual onychochilid mollusc from the Ordovician (Tremadocian) Fezouata Formation, Morocco2015In: Geobios, ISSN 0016-6995, E-ISSN 1777-5728, Vol. 48, no 6, p. 427-438Article in journal (Refereed)
    Abstract [en]

    Pelecyogyra fezouataensis nov. gen., nov. sp. is described from the Lower Ordovician (Tremadocian, A. murrayi Biozone) Fezouata Formation at Oued Beni Zoli (locality Z-F5), in the central Anti-Atlas, Morocco. This is the first Onychochilidae Koken in Koken and Perner, 1925 reported from the Ordovician of Morocco. Its stratigraphical position bridges the gap between the late Cambrian and Middle to Upper Ordovician records. This new taxon draws together large specimens, reaching 27 mm in the greatest diameter, with 3 rapidly expanding whorls. All specimens are invariably preserved as dorsoventrally compressed moulds although preservation suggests that the degree of compaction was not great and that the species was generally low spired. A characteristic axe-shaped apertural lip and an ornamentation consisting of fine and dense lirae serve to distinguish the new genus from other onychochilids. The species appears to have been gregarious. In some specimens, small scalloped injuries are preserved along the apertural margins but these are not considered to reflect failed predation. Up to now, twenty-two species and eight genera of Ordovician onychochilids have been documented, being distributed in eight different terranes. The composition of the Onychochilidae is briefly reviewed and updated from the literature, to include Helicotis? Koken in Koken and Perner, 1925, Hyperstrophema Horný, 1964, Invertospira Horný, 1964, Kobayashiella Endo, 1937, Laeogyra Perner, 1903, Matherella Walcott, 1912, Matherellina Kobayashi, 1937, Onychochilus Lindström, 1884, Pelecyogyra nov. gen., Pervertina Horný, 1964, Scaevogyra Whitfield, 1878, Sinistracirsa Cossmann, 1908, Versispira Perner, 1903, and Voskopiella Frýda, 1992. Onychochilidae and Clisospiridae are placed in Mimospirida Dzik, 1983, regarding Hyperstrophina Linsley and Kier, 1984 as a junior synonym.

  • 163.
    Ebbestad, Jan Ove R.
    et al.
    Uppsala University, Music and Museums, Museum of Evolution.
    Polechová, Marika
    Czech Geological Survey.
    Kröger, Björn
    Finnish Museum of Natural History, University of Helsinki, P.O. Box 44, FI-00014 Helsinki.
    Gutiérrez-Marco, Juan Carlos
    Departamento de Geodinámica, Estratigrafía y Paleontología, Facultad CC. Geológicas.
    Late Ordovician molluscs of the central and eastern Anti-Atlas, Morocco2019In: Geological Society Special Publication, ISSN 0305-8719, E-ISSN 2041-4927, Vol. 485Article in journal (Refereed)
    Abstract [en]

    More than 30 species of tergomyan, gastropod, bivalve and cephalopod molluscs are described fromthe Late Ordovician of central and eastern Anti-Atlas, Morocco. For the cephalopods this represents the firstsystematically known taxa of the region. Tergomyans and gastropods are most common in the more shalypart of the Lower Ktaoua Formation, while bivalves are more frequent in the sandy part of the Lower Second Bani Formation. A southern Gondwana aspect is evident for the tergomyan, gastropod and bivalve assemblages,sharing many taxa with Bohemia, while no clear signal is present for the cephalopods. The latter reflects insufficientknowledge of the fauna of large parts of these areas. The widely recognized Holopea? antiquata is transferredto the genus Radvanospira gen. nov.; other new gastropod taxa include Allossospira gen. nov.,Tritonophon grandis sp. nov., Radvanospira baniensis sp. nov. and Lophospira latilabra sp. nov. Most ofthe diverse bivalve fauna and the few cephalopods are left in open nomenclature but new taxa include thebivalve Praenucula pojetai sp. nov. and the cephalopods Wadema tattai sp. nov. and Tafadnatoceras tiouririnensegen. et. sp. nov. The Late Ordovician bivalves from Morocco are dominated by pteriomorphs andprotobranchs, inhabiting infaunal, semi-infaunal and epifaunal niches.

  • 164.
    Edberg, Elin
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Kartläggning av sulfidleror i Uppsala stad2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A large part of the center of the city of Uppsala is located on postglacial clay. This clay often contain sulfur, this in the form of sulfide, and thus it is generally called sulfide clay (or sulfidlera in Swedish). The amount of sulfide in the clay varies from location to location. When the sulfide-rich postglacial clay comes in contact with the air it oxidizes and can give rise to acid leachate and leaching of heavy metals that were bound to the sediments. The knowledge of this has made the interest of sulfide content in soils greater in recent years, this during for example excavations on building sites. The aim of this project is therefore to summarize and present data related to sulfiderich sediments in a perspicuous way, and thus make it easier to survey the measures that could be necessary to take into consideration for construction work in the city of Uppsala. A lot of the data is taken from the archive of Bjerking AB, but some of the information on sites with sulfide rich clay is taken from Miljökontoret. Using the computer program MapInfo, the locations with sulfide rich soils has been marked on a map of Uppsala and additional information about for instance layering, NNP and pH is connected to these markings, though this is only viewable together with the map in a program supporting the “.tab” file format.

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  • 165.
    Edte, Vincent
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Caught in the Lock-In? The Lützerath Decision and the Persistence of Fossil Fuel Hegemony in Germany2023Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In 2022 the Russian invasion in Ukraine marked a turning point for global politics. To loosen dependency on Russian gas, the German government came to an agreement with the state of North Rhine-Westphalia and the energy company RWE. They decided to extend the lifespan of two lignite-powered plants while simultaneously accelerating the phasing out of coal from 2038 to 2030. However, this decision required the destruction of Lützerath, a village located in the planned lignite mining area. It is therefore referred to as the Lützerath decision. It drew massive criticism from climate movements, scientists and thousands of individuals, who claimed that this decision marks the end of the Paris Agreement, is a reinvestment in coal and a betrayal of future generations. The responsible politicians justified their decision and countered the protestors claims, arguing for a success for climate protection. The decision went ahead and Lützerath was evicted and destroyed in January 2023. This study has performed a Critical Discourse Analysis of speeches, interviews and press statements by key German political decision makers involved in order to investigate how the Lützerath decision was argued for, and in what ways the Lützerath discourse contributed to a hegemonic position of the fossil fuel sector in Germany. The results identified two main narratives: (1) the narrative of an unambiguous necessity of the coal underneath Lützerath as an instrument to withstand the energy crisis triggered by the Russian invasion; and (2) the narrative of the Lützerath decision as a big success for climate protection. Overall, I argue that the Lützerath decision has reinforced the hegemonic position of the fossil fuel industry and that the Lützerath decision has perpetuated carbon lock-ins in multiple ways. I concluded that the political discourse surrounding the Lützerath decision marks a instance for contemporary fossil fuel hegemony in Germany and stands in contrast to the urgent need for climate protection.

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  • 166.
    Einarsson, Elisabeth
    et al.
    Lund University.
    Kear, Benjamin P.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    A mid-Campanian marine extinction event – possible evidence from the Kristianstad Basin of southern Sweden2011In: The 2nd Wiman Meeting. Carl Wiman's Legacy: 100 Years of Swedish Palaeontology / [ed] Benjamin P. Kear and Michael Streng, 2011, p. 7-8Conference paper (Other academic)
    Abstract [en]

    Potential traces of a mid-Campanian (83–73 Ma) marine extinction event have been documented as sequential faunal turnover in shallow coastal calcareous sands and calcarenite strata at the Åsen locality in the Kristianstad Basin of southern Sweden. The depositional succession at Åsen is conformably divided into the latest-early Campanian Belemnellocamax mammillatus belemnite Zone (a lateral equivalent of the northern European Belemnitella mucronata senior/Gonioteuthis quadrata gracilis Zone), and an overlying earliest-late Campanian Belemnellocamax balsvikensis Zone. The stratigraphically older B. mammillatus Zone assemblages comprise storm-accumulated remains (associated with coquina beds and oyster banks) that include selachians, chimaeroids, bony fish (pachycormiforms, pycnodontids, and teleosts), dyrosaurid crocodilians, elasmosaurid and polycotylid plesiosaurs, mosasaurs (mosasaurines, halisaurines, tylosaurines, and plioplatecarpines), and cheloniid sea turtles. Coeval invertebrates comprise abundant belemnites, bivalves, brachiopods, and echinoderms. This rich biodiversity abruptly declines up-sequence through the oyster bed layer and into the B. balsvikensis Zone; this is characterised by a sandier facies, which is exceptionally poor in reptile remains and manifests only small teleosts and sharks. Benthic molluscs and brachiopods also decline in abundance while worm tracks and decapod crustaceans (crabs) make a first appearance. Although, this observed change clearly corresponds to an environmental shift, it also correlates with a recognised trans-Atlantic mid-Campanian extinction event that affected warm-temperate to sub-tropical palaeolatitudinal belt assemblages in North America, and might have been part of a broader global phenomenon.

  • 167.
    Ek, Ella
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Hallgren, Linnéa
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Runnäs, Victoria
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Corbee, Gabriella
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Sandberg, Moa
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Engvall, Tove
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Borra för bergkyla: Kloridhaltens påverkan på grundvattnet i Sunnersta2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Med ett klimat som blir allt varmare kan behovet av nedkylning i fastigheter öka. Bergkyla är ett exempel på en nedkylningsmetod som kan vara ett effektivt sätt att kyla ner fastigheter på som redan använder sig av bergvärme. Då kan samma borrhål användas till båda ändamål; värme under kallare perioder och kyla under varmare. Bergkyla hämtar kyla från berggrunden genom att en köldbärarvätska cirkulerar i slangar nedsänkta i borrhålet. Köldbärarvätskan är varm när den förs ner i borrhålet där den kyls ned och förs därefter tillbaka till anläggningen. Detta utbyte av värmeenergi mellan köldbärarvätskan och berget gör inte bara att köldbärarvätskan sjunker i temperatur, berget runt borrhålet ökar även i temperatur. Om berget runt borrhålet ökar i temperatur kommer även det djupliggande, relikta grundvatten som finns i berggrunden att öka i temperatur. Detta skulle kunna skapa en vertikaltransport av det kloridhaltiga relikta grundvattnet upp till det ytliga grundvattnet, som då kontamineras.

    Målet med detta projekt var att undersöka huruvida en ökad användning av bergkyla skulle kunna skapa en vertikaltransport av det relikta grundvattnet upp till det ytliga och i sådana fall om detta skulle vara av betydelse för dricksvattenproduktionen i Uppsala. Området som studerades i detta projekt är Sunnersta, där antalet borrhål för bergvärme är många och potentiellt är ett område där många även väljer att installera bergkyla i sina redan befintliga borrhål.

    Projektet baserades på en litteraturstudie samt fördjupade beräkningar på vertikaltransporten av det relikta grundvattnet. Temperaturökningarna som beräkningarna baserades på var för enskilda borrhål 0,02 grader Celsius, där området runt borrhålet som var påverkat hade en radie på 20 m. För 47 borrhål användes istället temperaturökningen 1,2 grader Celsius, där storleken på det berörda området inte var specificerat. Extremfall för temperaturen i grundvattnet studerades för att se hur flödeshastigheten förändrades och genom det se hur tiden för transporten av det relikta vattnet påverkades. När den förstnämnda temperaturökningen användes så erhölls resultatet att det skulle ta 1750 år. Koncentrationen klorid detta medför i det ytliga grundvattnet blev då 253 mg/l om omblandningen av de båda vattenmassorna skulle ske under ett dygn, samt 75,5 mg/l om omblandningen skulle ske under ett år. Detta jämfördes med 100 mg/l som var riktvärdet för klorid i grundvatten från SGU.

    Analyserna av resultaten visade att en vertikaltransport kommer ske vid en temperaturökning orsakad av bergkylautvinning. Risken att det relikta grundvattnet skulle kontaminera det ytliga grundvattnet bedömdes dock låg eftersom det skulle krävas antingen väldigt många år för transporten eller osannolikt stora temperaturökningar. Med de antaganden som gjordes fanns stora osäkerheter kring beräkningarna och det främsta utvecklingsområdet bedömdes vara att mer forskning krävs för att kunna dra säkrare slutsatser kring riskerna med bergkyla.

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  • 168.
    Ekblad, Linnea
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Pilotstudie av källsorterande avloppslösning: Identifiering av systemlösning för källsorterat avloppsavfall i Sydöstra staden i Uppsala2022Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Outside the city center of Uppsala, a new district called ”the Southeastern city” will be built by 2050. Uppsala municipality wants to be at the forefront of sustainable planning and is therefore interested in investigating opportunities to utilize resources found in wastewater, as an alternative to conventional treatment of wastewater. Wastewater management is facing new types of problems related to greenhouse gas emissions, resource recycling and energy efficiency. One approach that enables management of these challenges is through the implementation of source separation sewer systems, that separates the household wastewater into different fractions. This enables resources such as energy and nutrients to be recycled. The purpose of the work was to identify drivers and from these drivers identify a solution for source separated sewage fractions in the southeastern city of Uppsala. Through a literature study followed by a workshop with Uppsala Vatten, possible drivers for Uppsala were determined to be Water Saving, Fulfillment of purification requirements, Resource efficiency regarding energy and nutrition, Obtaining knowledge and Climate neutrality. The determination of possible drivers resulted in further literature study, to identify facilities with similar drivers as Uppsala. The study showed that drivers as the ones identified for Uppsala have resulted in technology such as membrane bioreactor for digestion of source separated wastewater. Interviews were also conducted with people who have been or are involved in pilot projects in Sweden to specify what is required for implementation of a source separation system. It is currently difficult to require the implementation of such system with the main argument of recycling products, as the recycle aspect has not been a motive enough juridically for implementation. In Helsingborg, the ambition and a clear vision from the municipality was crucial for the implementation. In conclusion, the system best suited to the identified drivers include anaerobic digestion of source separated waste water in membrane bioreactor (AnMBR), as well as urine dehydration. Calculations were performed regarding a potential implementation resulted in that the treatment plant should treat wastewater from 900 people. For the treatment of urine, the daily urine production resulted in an area of the drying bed of 30 m2 or 23 m2 for varying drying rates. For treatment of faeces, dimensions of the membrane reactor were determined to radius 5 meters and 11 meters height, where the volume of flush water was the main reason for the large reactor.

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  • 169.
    Ekblom, Anneli
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology.
    Eichhorn, Barbara
    Institut für Archäologische Wissenschaften, Archäologie und Archäobotanik Afrikas, Johann Wolfgang Goethe-Universität.
    Sinclair, Paul
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology.
    Badenhorst, Shaw
    Department of Archaeozoology, Transvaal Museum, Department of anthropology and Archaeology, University of South Africa.
    Berger, Amelie
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology.
    Land use history and resource utilisation from A.D. 400to the present, at Chibuene, southern Mozambique2014In: Vegetation History and Archaeobotany, ISSN 0939-6314, E-ISSN 1617-6278, Vol. 23, no 1, p. 15-32Article in journal (Refereed)
    Abstract [en]

    This paper discusses changing patterns of resource utilisation over time in the locality of Chibuene, Vilankulos, situated on the coastal plain of southern Mozambique. The macroscopic charcoal, bone and shellassemblages from archaeological excavations are presented and discussed against the off-site palaeoecological records from pollen, fungal spores and microscopic charcoal. The Chibuene landscape has experienced four phases of land use and resource utilisation that have interacted with changes in the environment. Phase 1 (A.D. 400–900), forest savanna mosaic, low intensity cattle herding and cultivation, trade of resources for domestic use. Phase 2 (A.D. 900–1400), forest savanna mosaic, high intensity/extensive cultivation and cattle herding. Phase 3 (A.D. 1400–1800), savanna woodland and progressive decrease in forests owing to droughts. Decline of agricultural activities and higher reliance on marine resources. Possible trade of resources with the interior. Phase 4 (A.D. 1800–1900), open savanna with few forest patches. Warfare and social unrest. Collapse of trade with the interior. Decline in marine resources and wildlife. Loss of cattle herds. Expansion of agriculture locally and introduction of New World crops and clearing of Brachystegia trees. The study shows the importance of combining different environmental resources for elucidating how land use and natural variability have changed over time.

  • 170.
    Ekblom, Anneli
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology. Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Uppsala Centre for Sustainable Development, CSD Uppsala.
    Gillson, Lindsey
    Univ Cape Town, Rondebosch, South Africa.
    Notelid, Michel
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology.
    Water flow, ecological dynamics, and management in the lower Limpopo Valley: a long‐term vie2017In: WIREs Water, E-ISSN 2049-1948, Vol. 4, no 5, article id e1228Article in journal (Refereed)
    Abstract [en]

    In this contribution, we review long-term (millennial-decadal scale) river-flow changes, climate interactions, and interlinkage with vegetation dynamics, as well as society and policy, focusing on the lower Limpopo Valley (from the South African border through Mozambique). Drawing on paleoecological data, we address the valley's potential for defining critical ecological thresholds and managing an adaptive ecological landscape, by focusing on the dynamic relationship between different drivers (fire, hydrology, and grass/tree relationships). We briefly review the long-term interactions between water flow, climate variability, and society using archeological records and written sources. Lastly, we analyze the social and political context of water management, focusing on the last 100 years and transboundary water management. We also discuss planning and mitigation in relation to climate change and rainfall extremes that are projected to increase. It is stressed that forward-thinking policies must heed long-term climate variability, hydrology and biological and social impact and to plan and mitigate for environmental events. The discussion also brings to the fore the importance of an adaptable and equitable strategy in cross-border water sharing.

  • 171.
    Ekvall, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    The Characteristics of Sustainable Development - A Study on the Relationship Between neo-Aristotelianism and Agenda 20302019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The ethical analysis of the Sustainable Development Goals (SDGs) based on neo-Aristotelianism highlights that there are several issues interconnected to different meta-structures, including the social, the economy and the environment. The aspirations of the SDGs fall short in several regards because a wrongful focus on growth, technology and consumption. The approach toward development results in that social, individual and ecological flourishing are neglected. It is a consequence of the institutionalization of different normative values that falls short in solving sustainability issues and a failure to evaluate impact of the SDGs. It can also be attributed to a failure in terms of how the SDGs define the core ideas of sustainability: continuation, relationships and orientation. The perspective on what is to be sustained alienates nature, but it also reproduces a conception of the good life which is based on the degradation of the environment. A result is that the SDGs are not radical enough to actualize the needed carbon budgets, they do not provide the necessary incentive to strive for a sustainable lifestyle or to achieve a stronger form of sustainability. This is also due to that the SDGs only focus on action or that which is external instead of character or that which is internal to humans. However, neo-Aristotelianism in terms of virtue ethics and eudaimonia could solve these issues. The theory provides a different set of values, perceptions of what ought to be maintained and orientation in terms of what ought to be achieved. Eudaimonia and virtue ethics also provide a means to flourish in the best possible manner when and if climate change has an impact. An agent who has internalized neo-Aristotelianism would further strive for a sustainable lifestyle and it could be a happy, healthy, moral and meaningful existence. 

  • 172.
    Elfvengren, Emelie
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    We cannot see what we are not looking for: mapping and conceptualizing linkages between multidimensional inequality and ecosystem services2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The global threats of widespread biodiversity loss and climate change impact ecosystems daily, leading to far-reaching consequences for people who benefit from these systems in various ways. Despite these challenges, little is known about the differences in how people derive benefits from nature and who will become increasingly vulnerable to future global environmental change. Previous research has assessed the impact of inequality on nature’s benefits (or ecosystem services), but these efforts have primarily relied on socio-economic inequality measures. These measures overlook potential heterogeneity within groups based on characteristics such as gender, class, and ethnicity. Therefore, a multidimensional approach to understanding inequality is needed. This systematic mapping review aims to map the literature that explores multidimensional inequality in relation to ecosystem services (ES), specifically in terms of three types of ecosystem benefits: experience, use, and money. Key findings were that political-and economic inequalities are most frequently linked to all three types of benefits, with links between political inequality and the use of ES being particularly common in the literature. In contrast, studies that analyze inequalities based on religion, disabilities, and race in relation to ES are least common. Finally, experience is the least explored benefit in relation to inequality, potentially due to the challenges of assessing intangible benefits. This review also highlights the complexities of inequalities acting at different scales and potential trade-offs between inequality categories and ecosystem benefit types. Future research recommendations include further widening the inequality lens (primarily in the cultural and social dimensions) to improve our understanding of who benefits from nature to develop more effective, sustainable, and equitable policies and mitigate future threats.

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  • 173. Elina, Irina
    Analysis of Drinking Water Delivery Patterns in the Northern Part of Stockholm – Effects of Population Growth, Holidays and Weather Conditions2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Global warming is widely reported to be a cause of water scarcity and increased water con-sumption. As a consequence, it becomes harder for water suppliers to be prepared for increaseddemands. It is possible to predict the upcoming demand with the help of machine learningtools, however, a preliminary analysis of water consumption patterns is important for a goodprediction. This work focuses on water consumption patterns and studies their change withtime as well as the effects of meteorological factors on it.In order to aid the investigation and scrutinization of the patterns, a new semi-automatedtool was developed. Its algorithm is based on the Mann-Whitney U statistical test and performsgrouping of the weeks with similar sets of hourly water consumption. It helps to frame off theseasons of the year within which the patterns are similar. Along with that, K-means clusteringwas applied to the data to retrieve the patterns and to compare the performance with the newlydeveloped algorithm. On top of that, the effects of the population growth and meteorologicalvariables on water consumption were studied.K-means clustering showed more robust performance than the newly developed algorithmand therefore the ways of improvement were discussed along with the significance of gooddata quality and thorough data pre-processing. It was detected that municipalities with thedifferent housing situation had different persistent summer patterns of water consumption. Ingeneral municipalities with prevailing individual housing tend to consume more water duringthe summer per capita than others. Furthermore, municipalities with prevailing individualhousing were observed to be less robust against temperature growth and humidity decreasethan those with prevailing apartment housing as the latter increase their water consumptionless significantly in response to mentioned meteorological variables change. Therefore, consid-ering the population growth, the benefits of planning new multi-apartment dwelling areas inpreference to individual housing were discussed in the context of sustainable water use andclimate change.

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  • 174.
    Eriksson, Therese
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Naturkatastrofer i Sverige2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To be able to plan and construct a Swedish society that is well prepared for geological hazards, the government need to know about past event that has happened during the history, so they know how to plan for the future. Highly possible events that will happen are flooding, landslides, volcanic gases in the atmosphere and earthquakes. Flooding is the hazard that we need to consider most when we construct new infrastructure and buildings in the future. Climate changes will cause more precipitation and extreme weather, these will lead to more flooding when the water isn’t able to percolate down into the ground. When the ground is saturated with water another problem will be even more common, and that is a bigger frequency of landslides. The most dramatic consequence that would occur is from volcanic gases that go up into the atmosphere at an eruption, these can change the climate and create acid rain far away from the volcanic source. It isn’t just the direct hazards we need to consider while constructing the society, the question regarding nuclear waste and its long-term storage is highly important. Therefore is it very important to carefully consider where, and when big earthquakes have occurred since the last glaciation. 

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  • 175.
    Eriksson-Lindberg, Katarina
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. 1986.
    Underlag för efterbehandlingsplan av Gråsjöns skiffertäkt i Jämtland2016Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
    Abstract [en]

    Quarries result in great environmental interference. When quarrying is completed the area must undergo restoration. There are different ways to design the restoration plan and what must be taken into account. The shale quarry in Gråsjön, Jämtland County hasn’t been restored. Due to cultural heritage in the quarry, the possible geological value and the fact that the shale-quarry is located in an alpine environment makes it difficult to determine the course of action. The aim of this paper is to determine what best way is to restore the shale-quarry due to geological values, nature values, cultural heritage, esthetical values and risk and safety. This was done by qualitative semi-structured interviews and a literature study of reports on restoration of quarries. Upon restoration, it can be valuable to preserve interesting strata in the quarry for research and educational purposes. The biodiversity should be favored and slopes, heaps of stone blocks and pools of water can create favorable environments. Older parts of the quarry that represent a cultural heritage should be preserved and precautions should be taken to prevent people from getting injured in the quarry. This could be done by line out the steep walls in the quarry or blast out a protective step in the stone wall that prevent people from falling down. A restoration plan that is taking into account all the aspects is not possible because a species inventory must be initiated. When the inventory is complete the course of action can be decided and how the other aspects can be part of the restoration plan.

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  • 176.
    Ernst, Andrej
    et al.
    Hamburg University.
    Bogolepova, Olga
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Uppsala Centre for Russian and Eurasian Studies.
    Gubanov, Alexander P.
    Uppsala University, Music and Museums, Museum of Evolution.
    Two bryozoan assemblages from the Ordovician of the Russian Arctic2017In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 139, no 3, p. 205-215Article in journal (Refereed)
    Abstract [en]

    Two assemblages from the Ordovician rocks of the Arctic region contain exclusively trepostome bryozoans. The first assemblage from the Yunoyaga Formation (Middle Ordovician) of Maly Oleniy Island, Novaya Zemlya, contains Monticulipora mammulata d’Orbigny, 1850 and Nicholsonella vaupeliformis Modzalevskaya, 1955. Both species possess thick-branched ramose colonies characteristic for rather high energy environments. The second assemblage comes from two localities of the Stroinaya Formation (Upper Ordovician) of the October Revolution Island containing the single species Amplexopora angusta Astrova, 1965. The monospecific bryozoan fauna of branched, rarely encrusting growth forms and sedimentological characteristics of embedding rocks (floatstone) suggest low energy conditions in deeper environments, apparently accompanied by high salinity conditions.

  • 177.
    Evans, David C.
    et al.
    Royal Ontario Museum, 100 Queens Pk, Toronto, ON M5S 2C6, Canada.;Univ Toronto, Dept Ecol & Evolutionary Biol, 25 Willcocks St, Toronto, ON M5S 3B2, Canada..
    Brown, Caleb M.
    Royal Tyrrell Museum Palaeontol, Box 7500, Drumheller, AB T0J 0Y0, Canada..
    You, Hailu
    Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xizhimenwai St, Beijing 100044, Peoples R China..
    Campione, Nicolás E.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. Univ New England, Palaeosci Res Ctr, Armidale, NSW 2351, Australia.
    Description and revised diagnosis of Asia's first recorded pachycephalosaurid, Sinocephale bexelli gen. nov., from the Upper Cretaceous of Inner Mongolia, China2021In: Canadian journal of earth sciences (Print), ISSN 0008-4077, E-ISSN 1480-3313, Vol. 58, no 10, p. 981-992Article in journal (Refereed)
    Abstract [en]

    The first recorded pachycephalosaurid dinosaur from outside of North America, “Troodonbexelli, was described from the Upper Cretaceous of Nei Mongol (Inner Mongolia) Autonomous Region, China, in 1953 based on a partial parietal dome. The holotype, and only, specimen has not been redescribed or figured since the original description and is currently considered lost. As a result, researchers have generally considered this taxon a nomen dubium. Here, we identify and describe two high-fidelity plaster casts of the holotype and assign them as plastotypes for this taxon. Examining these replicas allows for an updated comparative description and complete systematic revision of this enigmatic taxon and its inclusion within a phylogenetic analysis for the first time. The material is distinct from all other pachycephalosaur material and can be diagnosed by a single autapomorphy (a wide and deeply embayed posterior parietal margin) and a unique combination of characters, including lack of primary nodes on the parietal and a highly arched, fully roofed temporal chamber. A new genus, Sinocephale gen. nov. is established to receive this species as Sinocephale bexelli. Sinocephale bexelli is phylogenetically removed from Stegoceras (formerly “Troodon”), to which it was previously affiliated, and recovered as a pachycephalosaurine pachycephalosaurid.

  • 178. Faber, Robert
    et al.
    Janda, Christoph
    Bax, Gerhard
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Earth Sciences, Department of Earth Sciences. ELD.
    Software assistet tracing of tectonic faults: case studies from the Sutlej Valley (NW-Himalayas / India) and the Riksgränsen - Rombak area (Northern Scandinavian Caledonides)2004In: The 26th Nordic Geological Winter Meeting: Abstract volume, 2004, p. 106-Conference paper (Refereed)
  • 179.
    Fagerlund, Fritjof
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Niemi, Auli
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
    Bensabat, Jacob
    Shtivelman, Vladimir
    Interwell field test to determine in-situ CO2 trapping in a deep saline aquifer: Modelling study of the effects of test design and geological parameters2013In: Energy Procedia, ISSN 1876-6102, Vol. 40, p. 554-563Article in journal (Refereed)
    Abstract [en]

    An interwell field test to determine residual phase and dissolution trapping of CO2 is being designed at Heletz, Israel. Effects of test-design options and geological parameters were investigated using numerical modelling. It was found that the interwell distance has large influence on the feasibility of the test both in terms of creation of a zone of residually trapped CO2 and detection of the time when such zone has been created. The optimal distance is site-specific and depends on formation properties. Alternating CO2 and brine injections slightly increased residual trapping, but did not facilitate creation of a well-defined zone of trapping.

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  • 180.
    Fahad, Zaenab A.
    et al.
    Swedish Univ Agr Sci, Uppsala BioCtr, Dept Forest Mycol & Plant Pathol, SE-75007 Uppsala, Sweden..
    Bolou-Bi, Emile B.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. Univ Paris Est Creteil Val Marne, Inst Ecol & Sci Environm IEES Paris, Equipe Geomicrobiol Sols & Eaux, FR-94010 Creteil, France..
    Kohler, Stephan J.
    Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Soil Water Environm Ctr, SE-75007 Uppsala, Sweden..
    Finlay, Roger D.
    Swedish Univ Agr Sci, Uppsala BioCtr, Dept Forest Mycol & Plant Pathol, SE-75007 Uppsala, Sweden..
    Mahmood, Shahid
    Swedish Univ Agr Sci, Uppsala BioCtr, Dept Forest Mycol & Plant Pathol, SE-75007 Uppsala, Sweden..
    Fractionation and assimilation of Mg isotopes by fungi is species dependent2016In: Environmental Microbiology Reports, ISSN 1758-2229, E-ISSN 1758-2229, Vol. 8, no 6, p. 956-965Article in journal (Refereed)
    Abstract [en]

    Symbiotic ectomycorrhizal fungi mobilize nutrients from both organic and inorganic substrates and supply them to their host plants. Their role in mobilizing base cations and phosphorus from mineral substrates through weathering has received increasing attention in recent years but the processes involved remain to be elucidated. We grew selected ectomycorrhizal and nonmycorrhizal fungi in axenic systems containing mineral and organic substrates and examined their capacity to fractionate and assimilate stable isotopes of magnesium. The mycorrhizal fungi were significantly depleted in heavy isotopes with the lowest Mg-26 values (the difference between Mg-26 in fungal tissue and Mg-26 in the substrate) compared with nonmycorrhizal fungi, when grown on mineral substrates containing granite particles. The ectomycorrhizal fungi accumulated significantly higher concentrations of Mg, K and P than the nonmycorrhizal fungi. There was a highly significant statistical relationship between Mg-26 tissue signature and mycelial concentration of Mg, with a clear separation between most ectomycorrhizal fungi and the nonmycorrhizal fungi. These results are consistent with the idea that ectomycorrhizal fungi have evolved efficient mechanisms to mobilize, transport and store Mg within their mycelia.

  • 181.
    Fahlgren, Elise
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Tranvik, Maria
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    The first study of the micro-fauna of middle Cambrian olistoliths in the Argentine Precordillera2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study implies a survey of a somewhat unexplored Cambrian carbonate formation in the Argentine Precordillera (AP) located in western Argentina, close to the city of San José de Jáchal. The carbonate platform of the AP is a unique piece of the South American geology and is in this study partly surveyed and compared with the Stephen Formation of northern Canada, a middle Cambrian unit renowned for its contents of exceptionally well preserved soft bodied fossils named the Burgess Shale biota.

    The investigated formation consists of an olistolith among the several Los Túneles Olistoliths at the Western Precordillera. The olistolith originates from the Cambrian Period and lies embedded in younger material with an age and history up for debate by several paleontologists and biostratigraphers. Shallow investigations have shown that these rocks may have similar properties to rocks of the Stephen Formation. There are only a few known rock assemblages on Earth showing Burgess Shale-type (BST) preservation and if the Los Túneles Olistolith proves to possess BST preservation it would be of great substance for the geological researchers of Argentina. The olistolith has in this study been explored by gathering samples in field and dissolving them in acid to investigate possible fossil content. The aim is thus to ascertain whether or not the Los Túneles Olistolith may contain especially well preserved fossils. This is the first study ever made of the microfauna in a middle Cambrian unit in the whole of South America, and hence it will tell if further investigations would be of interest.

    This survey determines that the Los Túneles Olistolith actually consists of three olistoliths encased in matrix, do not contain BST preservation and that further studies are not probable to show otherwise. The fossil findings, such as Chancelloriidae Chancelloria, Hexactinellida Recticulosa and Mollusca Hyolitha establish that the three Los Túneles Olistoliths originate from middle Cambrian while the matrix surrounding the olistolith is determined to be of Devonian age.

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  • 182.
    Fahlgren, Ted
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Hellström, Jack
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Sundqvist Hallingström, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Kartläggning av dagvattenutlopp som mynnar i Fyrisån och dess påverkan på vattenkvalitet2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Stormwater originates from precipitation and possibly some amounts of groundwater. When rain falls on areas with a hard surface it can contribute to surface runoff and with that the possibility for contaminations to enter the recipient, since most stormwater is directed to the recipient with pipes, trenches and water streams directly that generally have no sort of cleaning treatment. On the other hand, when precipitation falls on areas with vegetation the water is intercepted by the plants and the roots taking up water as well. This gives less runoff and the water that reaches the recipient has been filtered through the soil, but substances can still reach the recipient. 

    When cities expand and more hard surfaces increase such as roads and buildings, and areas of vegetation generally decrease. Uppsala is one those cities that are under heavy expansion, which makes it very important to have a good management plan of stormwater to try and decrease the amount of substances that makes water quality worse in Fyrisån.

    Three parameters were used to determine the water quality in this thesis, conductivity, turbidity and nitrate content. Testing was performed on both the water from the outlets, as well as the surface water of Fyrisån. Results from the testing were compared to data collected from Sveriges lantbruksuniversitets (SLU) test sites Klastorp and Flottsund.

    This bachelor’s thesis examines stormwater and its impact on water quality of Fyrisån in Uppsala, Sweden. The examined area follows Fyrisån, is 8,5 km long and stretches from the northern part of Uppsala, Klastorp to the south where a stream called Sävjaån connects, which is situated about 4km before Fyrisån mouths in the lake Ekoln. The area was mapped using a GPS, giving each location with a stormwater outage a specific coordinate and afterwards a name used in the report. 

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  • 183.
    Ferndahl, Sara
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Brännlund, Frida
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Holstein-Krag, Fanny
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Rantala, Johanna
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Törsleff, Oscar
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Virtanen, Anton
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Cirkulära metallflöden i medicinteknisk utrustning2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    I denna studie undersöktes cirkulära metallflöden i medicinteknik på Akademiska sjukhuset i Uppsala och Region Uppsala. Syftet var att kartlägga och undersöka kritiska metaller i utvald medicinteknisk utrustning. Återvinningen av metaller i utrustningen på Akademiska sjukhuset undersöktes. Utöver detta studerades upphandlingar kring medicinteknisk utrustning och förslag och åtgärder för förbättringar presenterades.

    Specifik högteknologisk medicinteknisk utrustning och komponenter valdes ut för studien. Dessa var: datortomografi, magnetisk resonanstomografi, strålbehandling, patientövervakning (monitorer, termoelement och pulsoximeter) samt batterier och touchskärmar. 33 olika metaller kartlades i utrustningen och en kriticitetsmatris utformades för kriticitetsbedömningen av metaller. Kriticitet i denna studie beaktade försörjningsrisk och en ny bedömningsparameter: medicinteknisk betydelse. Tio metallers kriticitet bedömdes och dysprosium, europium, praseodym, niob, kobolt, indium, litium, gallium och volfram bedömdes som kritiska metaller för medicinteknik. 

    Akademiska sjukhuset har en egen återvinningsstation där de sorterar batterier och den medicintekniska utrustningen. Därefter transporteras batterier till El-Kretsen och elektronikavfall till Stena Recycling för återvinning. Där utvinns metallerna ur produkterna och säljs sedan vidare för att användas i nya produkter. El-Kretsen följer de lagstadgade kraven för återvinning av batterier, vilket varierar mellan 50-65 %, men återvinner inte mycket mer än vad lagen säger. Stena Recycling gör massabalanser på produkterna för att få information om vilka metaller elektronikavfallet innehåller och uppgav att de på så vis kan återvinna 98-99 %.

    Flera regioner kontaktades angående deras upphandlingskrav om metaller i medicinteknisk utrustning. Region Uppsala ställer inga miljökrav för metaller vid upphandling av medicinteknisk utrustning, men krav bör ställas på tillverkare och leverantörer. Det finns flera regioner som Region Uppsala kan ta inspiration ifrån för att formulera upphandlingskrav. Även IT- och byggbranchen har krav för metaller och materialåtervinning som är värda att studera vidare. För att förbättra återvinningen genom upphandlingskrav kan krav om innehållsdeklaration, demonterbarhet och omhändertagning av medicinteknisk utrustning utvecklas. Slutligen rekommenderas fortsatta studier inom detta ämne genom att utöka kartläggningen och kriticitetsbedömningen av metaller i medicinteknik.

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  • 184.
    Fisher, D. A.
    et al.
    Geological Survey of Canada .
    Koerner, R. M.
    Geological Survey of Canada .
    Zielinski, G. A.
    University of New Hampshire.
    Wake, C. P.
    University of New Hampshire.
    Zdanowicz, Christian
    Geological Survey of Canada.
    Bourgeois, J. C.
    Geological Survey of Canada.
    Mayewski, P. A.
    University of New Hampshire.
    Grummet, N.
    University of New Hampshire.
    The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada2002In: Annals of Glaciology, ISSN 0260-3055, E-ISSN 1727-5644, Vol. 35, no 1, p. 150-156Article in journal (Refereed)
    Abstract [en]

    The isotopic and chemical signatures for ice-age and Holocene ice from Summit, Greenland, and Penny Ice Cap, Baffin Island, Canada, are compared. The usual pattern of low δ180, high Ca2+ and high Cl- is presented in the Summit records, but Penny Ice Cap has lower than present Cl- in its ice-age ice. A simple extension of the Hansson model (Hansson, 1994) is developed and used to simulate these signatures. The low ice­ age Cl- from Penny Ice Cap is explained by having the ice-age ice originating many thou­sands of km inland near the centre of the Laurentide ice sheet and much further from the marine sources. Summit's flowlines all start close to the present site. The Penny Ice Cap early-Holocene δ180's had to be corrected to offset the Laurentide meltwater distortion.The analysis suggests that presently the Summit and Penny Ice Cap marine impurity ori­ ginates about 500 km away, and that presently Penny Ice Cap receives a significant amountoflocal continental impurity.

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  • 185. Fisher, D. A.
    et al.
    Wake, C.
    Kreutz, K.
    Yalcin, K.
    Steig, E.
    Mayewski, P.
    Anderson, L.
    Zheng, J.
    Rupper, S.
    Zdanowicz, Christian M.
    Demuth, M.
    Waszkiewicz, M.
    Dahl-Jensen, D.
    Goto-Azuma, K.
    Bourgeois, J. B.
    Koerner, R. M.
    Sekerka, J.
    Osterberg, E.
    Abbott, M. B.
    Finney, B. P.
    Burns, S. J.
    Stable isotope records from Mount Logan, Eclipse ice cores and nearby Jellybean Lake. Water cycle of the North Pacific over 2000 years and over five vertical kilometres: Sudden shifts and tropical connections2004In: Geographie Physique et Quaternaire, Vol. 58, no 2-3, p. 337-352Article in journal (Refereed)
  • 186. Fisher, D.
    et al.
    Dyke, A.
    Koerner, R.
    Bourgeois, J.
    Kinnard, C.
    Zdanowicz, Christian M.
    de Vernal, A.
    Hillaire-Marcel, C.
    Savelle, J.
    Rochon, A.
    Natural variability of Arctic sea ice over the Holocene2006In: Eos, Vol. 87, no 28, p. 273-275Article in journal (Refereed)
  • 187. Fisher, D.
    et al.
    Osterberg, E.
    Dyke, A.
    Dahl-Jensen, D.
    Demuth, M.
    Zdanowicz, Christian M.
    Bourgeois, J.
    Koerner, R. M.
    Mayewski, P.
    Wake, C.
    Kreutz, K.
    Steig, E.
    Zheng, J.
    Yalcin, K.
    Goto-Azuma, K.
    Luckman, B.
    Rupper, S.
    The Mt Logan Holocene-late Wisconsinan isotope record: Tropical Pacific-Yukon connections2008In: Holocene, Vol. 18, no 5, p. 667-677Article in journal (Refereed)
  • 188. Fisher, D.
    et al.
    Zheng, J.
    Burgess, D.
    Zdanowicz, Christian M.
    Kinnard, C.
    Sharp, M.
    Bourgeois, J.
    Recent melt rates of Canadian arctic ice caps are the highest in four millennia2012In: Global and Planetary Change, Vol. 84-85, p. 3-7Article in journal (Refereed)
  • 189.
    Forsander, Linn
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Supporting SMEs in the Circular Economy Transition: Perspectives from Swedish Intermediaries2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    There’s increasing evidence that activities from humans are affecting the earth system to a degree that is crossing the planetary boundaries. During the last decade, Circular Economy has gained attention from both academia, companies, and policymakers and is seen as one way to address economical and sustainability issues. A circular transition requires the implementation of innovative business models, but the uptake of circular business models is still slow. In Sweden, 99,9% of all companies are classified as small and medium-sized enterprises. Those companies play an important role in the circular transition, but the process is however slow due to internal factors like lack of resources and competencies alongside other barriers like regulations, market, and lack of support. Despite a lot happening in the field of circular transition for small and medium-sized enterprises, there's still little research focused on the ongoing state of circular economy in practice. In this exploratory study, semi-structured interviews have been used to explore the ongoing state in Sweden. The aim of the study is to explore how intermediaries are supporting small and medium-sized enterprises with adopting circular economy in Sweden and what kind of challenges and opportunities the intermediaries have experienced along the circular transition process. The results show that we should go beyond the general drivers and barriers for adopting a circular economy. The challenging barriers might not be a lack of resources and regulations, it might be the lack of awareness and interest from companies themselves. What became clear during the interview study was that the environmental benefits of adopting circular economy is not the driving force but rather a result of adopting circular economy. The motivation in the first place for adopting circular economy is that it can create a better and a smarter business. There was a consensus among the intermediaries that when one is workings with companies, one must highlight the business values of a circular economy: profitability, resource efficiency, loyal customers, etc. If companies don’t see the opportunities and benefits of adopting circular economy, they won’t prioritize and allocate resources for it. The complexity of a circular transition also requires collaboration on different levels: between companies, regions, business developers, municipalities, research institutes, policy developers, etc. To enable the overall collaboration, there’s a need for a comprehensive facilitator or coordinator on different levels (national, regional, and local) that can unify the national transition.

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  • 190.
    Forsberg, Viktor
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Granström, Filip
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Jämförelse av karteringsmetoder inför bergklassificering i tunnlar2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Safety is always a primary concern during construction, even during tunnel construction. To prevent rock fall or sliding of blocks the rock has to be examined and classified. The tunnel examined in this report costs about 7000 SEK/hour to construct. Therefore, a lot of money can be saved by streamlining the work process, including mapping of geological structures. In this paper three mapping methods are compared, such as traditional geological mapping, photogrammetry and laser scanning. The Q and RMR index from the three different methods are then compared with respect to the various parameters included in the classification systems.    The purpose of this study is to find out whether the new mapping methods have any financial and/or safety benefits, as well as any potential benefits in terms of storage in digital format of information about the rock quality and features, or not. The purpose is also to examine if the new technologies could replace the traditional mapping method fully or partially.

        Laser scanning and photogrammetry cannot completely replace today’s conventional mapping. This is because some of the parameters are not possible to be observed and interpreted in the produced digital models, but must be done in situ. However, there are other benefits of the digital methods such as digital storage capabilities, detailed, easily interpretable models and that it takes less time to map large areas or long distances.

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  • 191.
    Fortey, Richard A.
    et al.
    Natural History Museum, London.
    Ebbestad, Jan Ove R.
    Uppsala University, Music and Museums, Museum of Evolution.
    Ordovician trilobites from Taimyr and the identity of Taimyraspis Balashova, 19592017In: 6th International Conference on Trilobites and their Relatives. Tallinn, Estonia,  7-10 July 2017 / [ed] Helje Pärnaste, Tallinn: Libris Est OU, Tallinn , 2017, p. 18-Conference paper (Refereed)
    Abstract [en]

    Ordovician and Silurian trilobites from the Taimyr Peninsula were described by Balashova (1959, 1960), who identified 31genera and 60 species through the Middle and Upper Ordovician part of the succession. New material from the Ordovician succession was collected during a multidisciplinary expedition arranged by the Swedish Polar Research Institute in 1998. Three localities along the eastern shore of the Upper Taimyr River were sampled. The trilobites include some Siberian endemics in shelf limestones, with more widespread faunas representing a different biofaces. The most diverse Upper Ordovician fauna was recovered from the Mutninskaya Formation, and a rich sample collected from the locality at Fisherman's Bend is similarin many ways to 'open shelf' Upper Ordovician faunas described particularly from the Scotland-Appalachian Caledonides. Of particular interest is excellent new material of the hitherto incompletely known genus Taimyraspis. Balashova associated an incorrect thorax and pygidium with the cephalic parts when she described this taxon. Furthermore, she assigned Taimyraspis to the Family Isocolidae, which has been followed by subsequent authors. However, recognition of the correct thoracic segments and pygidium in the new collections makes this familial assignment implausible. Since Balashova (1959) several other trilobitegenera have been erected which are relevant to the relationships of Taimyraspis. Dean (1972) proposed a new genus Effnaspis for a species originally described by B. N. Cooper (1953) from Virginia as lsbergia virginica and also placed in lsocolidae. Cooper had assigned a pygidium to this species, which Dean subsequently rejected as being inappropriate for an isocolid. However, this pygidium is more compatible with that of Taimyraspis, and the cranidium of Effnaspis is also so similar to that of Taimyraspis that it is considered likely that Effnaspis is its synonym. Chang and Fan (1960) erected a third relevant genus Yumenaspis, from the Chilien Mountains, China; this genus was placed in Family Hapalopleuridae. Again, there are considerable similarities to Taimyraspis, and a pygidium attributed to Yumenaspis is also appropriate. Yumenaspis has since been reportedin several localities in Scotland and Ireland, but never from good material. We consider that all of these trilobites are closely related, with a wide distribution similar to that of other genera from Fisherman's Bend. The familial relationships of this group are less easily resolved. Taimyraspis is neither isocolid nor hapalopleurid. However, we recognise significant similarities to a rare Ordovician genus described from Norway by Nikolaisen (1965) as Frognaspis. Nikolaisen assigned this genus to the previously monogeneric Family Ityophoridae, based on ltyophorus from the latest Ordovician Boda Limestone of Sweden. The higher-level relationships of this family are controversial. However, small growth stages of Taimyraspis in the new collections suggest aplacement within the corynexochoids sensu lato.

  • 192.
    Fortey, Richard A.
    et al.
    Natural History Museum, London.
    Ebbestad, Jan Ove R.
    Uppsala University, Music and Museums, Museum of Evolution.
    The best of two worlds -: the Late Ordovician trilobites of the Taimyr Peninsula, Arctic Russia2019In: 11th North American Paleontological Conference Program with Abstracts / [ed] Droser, M., N. Hughes, N. Bonuso, D. Bottjer, D. Eernisse, R. Gaines, A. Hendy, D. Jacobs, J. Miller-Camp, R. Norris, K. Roy, P. Sadler, M. Springer, X. Wang, and M. Vendrasco, 2019, Vol. 36Conference paper (Other academic)
    Abstract [en]

    mportant occurrences of Late Ordovician trilobites of the Taimyr Peninsula, Arctic Russia have been known for nearly 70 years through the work of Balashova (1959/1960) but have been neither well-understood nor revised. A study and revision of 56 Sandbian-Katian species from the Peninsula, including new and previous described material, gives a clear picture of their diversity and distributionfor the first time. The new material is well-preserved and constrained stratigraphically, while the original Balashova specimens are more incomplete and from isolated finds made during mapping in the 1950’s. A new monorakine subgenus and seven new species are recognized in press. Previously thought to be an endemic, Taimyraspisis shown to be an ityophorid close to Effnaspis, Yumenaspis, Ityophorus, and Frognaspis from Laurentia, Baltica and China. The monotypic Goldillaenoides is shown to be close to Failleana. The remopleuridid Pararemopleuridesis recognized for the first time in Taimyr, a genus with other possible occurrences including China, North-eastern Russia and Australia. The genus may be closely related to Robergiella Whittington. Two new species of Robergia prompted a re-investigation of the type species which revealed the presence of a narrow anterior border. This finding suggests that the concepts of Robergia and Pugilator Nikolaisen must be revised. A new species of Dionide is exceptional in having about 30 axial rings on the pygidium. It is found in dark sediments suggestive of a depletion of oxygen at the sea floor, and the high number of segments with accompanied limb pairs and gills may reflect an adaption to such an environment. Eight species of monorakines are described, but while Ceratevenkaspis dominates Monorakos is apparently absent from the Taimyr Peninsula. Seven species of isoteline asaphids are recognized, but with the exception of Homotelus only very fragmentary material is available. Our study clearly distinguishes between two biofacies in the Upper Ordovician. The first is a widespread raphiophorid association found in marginal shelf areas of low latitude Ordovician palaeocontinents. Taxa include Ampyxella, Ampxyina, Failleana, Pararemopleurides, Raymondella, Remopleurides, Robergia, Stygina, Taimyraspis, and Toernquistia. The second biofacies is the shallow shelf monorakine-cheirurid-illaenid association with Carinopyge, Ceratevenkaspis and Evenkaspis, endemic to the Siberian Platform, as well as seven isoteline taxa, Achatella, Ceraurinus¸ Denella?, Whittakerites, and Xylabion otherwise typical of inshore Laurentia. From a biogeographical and palaeogeographic point of view, Taimyr is placed marginally to the Siberian Platform during the later Ordovician.

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  • 193.
    Fowler, William
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Description of an Early Cenozoic Pollen and Spore Assemblage from the Sabrina Coast, East Antarctica2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Preliminary palynological investigation of core sediments recovered from the Sabrina Coast, off Wilkes Land, East Antarctica revealed the existence of a rich pre-glacial terrestrial palynomorph assemblage, estimated as late Palaeocene in age. In this study, further samples from the same core are examined and the floral composition is described in detail, accompanied by photomicrographs and remarks on selected taxa. Over 150 morphotypes are distinguished including representatives of Lycopodiophyta, Polypodiophyta, Angiospermae, and Gymnospermae. The highest taxonomic diversity is seen within angiosperms - which here constitute over half of all recovered species - particularly within the family Proteaceae. Numerically, pollen referable to the genera Gambierina and Battenipollis are the most abundant and further evidence is found that within both taxa there exists a spectrum of morphological variation encompassing several morphotypes usually considered distinct. Pollen abnormalities, likely to be the result of environmental stress, are also reported from several species.

    While some Mesozoic taxa are recognisably reworked, other lines of evidence support a penecontemporaneous origin for parts of the assemblage, which probably lived adjacent to the site of deposition on the fringes of what is now the Aurora Subglacial Basin. Through examination of the botanical affinities of comparable extant spores and pollen, the Sabrina Coast flora is reconstructed as having comprised both elements of overstorey and understorey vegetation. The general paucity of Nothofagidites pollen distinguishes this locality from other, admittedly younger, sites on the East Antarctic margin, but there remains significant taxonomic overlap between the palynomorphs described herein and the other published assemblages from the region.

  • 194. Foy, N.
    et al.
    Copland, L.
    Zdanowicz, Christian M.
    Demuth, M.
    Hopkinson, C.
    Recent volume and area changes of Kaskawulsh Glacier, Yukon, Canada2011In: Journal of Glaciology, Vol. 57, no 203, p. 515-525Article in journal (Refereed)
  • 195.
    Freeman, Rebecca
    et al.
    Missouri State University.
    Miller, James
    Missouri State University.
    Holmer, Lars
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Streng, Michael
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
    Linguate brachiopod extinction and global migration coinciding with three laurentian trilobite extinction events during the late cambrian-earliest ordovician2011In: GSA Annual Meeting in Minneapolis, Minnesota USA, 2011, p. 543-543Conference paper (Refereed)
    Abstract [en]

    Laurentian lingulate brachiopods on the outer shelf were affected by a series of three extinction events coinciding with trilobite extinctions (biomere boundaries). There was rapid turnover of the brachiopod faunas during each event. These extinctions are seen at the Steptoean/Sunwaptan, Sunwaptan/Skullrockian, and Skullrockian/Stairsian North American Upper Cambrian–lowest Ordovician stage boundaries. Lingulate brachiopods were examined from the Orr, Notch Peak, House, and Fillmore formations of western Utah and from the Catlin Formation and Hales Limestone of Nevada. Associated with each extinction event, brachiopod genera/species appeared that are also found in coeval strata in Kazakhstan and/or western Gondwana (e.g., Quadrisonia minorZhanatella rotunda, and species of Eurytreta). Some of these taxa may have appeared in the deeper water/higher latitude environments of Kazakhstan or Gondwana before appearing on the Laurentian shelf. Eurytreta may have appeared in deep-water slope environment at Tybo Canyon, Nevada before appearing in shelf environments in Utah.

    The Steptoean/Sunwaptan and Sunwaptan/Skullrockian boundaries were also examined in the Wilberns and Tanyard formations of central Texas. Latest Steptoean strata yield taxa widely distributed in Laurentia, although endemic to it, such as Linnarssonella girtyi. There is abrupt faunal change at the base of the Sunwaptan, followed by a fauna that is also endemic to Laurentia and is virtually identical to a fauna described from the Snowy Range Formation of Wyoming and Montana. This fauna is not present in coeval strata in Utah and Nevada. Mid-Sunwaptan strata in Texas yield a fauna with strong affinities to coeval strata in Utah; all species are endemic to Laurentia. The Sunwaptan/Skullrockian boundary is also characterized by complete turnover, this time with a replacement fauna having affinities both to the Laurentian outer shelf and to Gondwana and Kazakhstan.

    This pattern of events suggests that Late Cambrian–earliest Ordovician extinctions in Laurentia were caused by environmental changes that altered conditions on the Laurentian shelf to conditions more similar to those in deeper water (Kazakhstan) or higher latitudes (Gondwana), and these changes facilitated migration of globally distributed lingulate brachiopods.

  • 196.
    Fryda, Jiri
    et al.
    Czech Univ Life Sci, Fac Environm Sci, Kamycka 129, Prague 16521 6, Czech Republic;Czech Geol Survey, Klarov 3-131, Prague 11821 1, Czech Republic.
    Ebbestad, Jan Ove R.
    Uppsala University, Music and Museums, Museum of Evolution.
    Friydova, Barbora
    Czech Univ Life Sci, Fac Environm Sci, Kamycka 129, Prague 16521 6, Czech Republic.
    The oldest members of Porcellioidea (Gastropoda): a new link between Baltica and Perunica2019In: Papers in Palaeontology, ISSN 2056-2799, E-ISSN 2056-2802, Vol. 5, no 2, p. 281-297Article in journal (Refereed)
    Abstract [en]

    The strata of Gotland, Sweden, provide one of the richest records of Silurian gastropod faunas in the world. Recent re-evaluation of museum collections revealed for the first time the presence of gastropods of the superfamily Porcellioidea (Archaeogastropoda) in the Silurian strata of Gotland (Baltica). Additionally, the porcellioideans from Gotland represent the oldest record of the superfamily, members of which were an element of marine gastropod communities from Silurian to Cretaceous time, a period of more than 350 million years. The morphology of the sinistrally coiled teleoconchs in the oldest porcellioidean gastropods supports an existing hypothesis that the pseudo-bilaterally symmetrical teleoconch and the mid-whorl position of the selenizone in the post-Silurian porcelliids is a derived shell character. The occurrence of porcellioidean gastropods in the Silurian strata of Baltica also represents a new faunal link between Baltica and Perunica which corresponds well with published palaeobiogeographical and palaeogeographical models. Six taxa are described, including the Sheinwoodian (early Wenlock) Gotlandiela contraria (Lindstrom), the Gorstian (early Ludlow) Mannegaardina hedei gen. et sp. nov., the Ludfordian (late Ludlow) Gotlandiela sp. and Pernericirrus lindstroemi sp. nov., as well as two agnesiid species.

  • 197.
    Gallus, Robin Alexander
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Prospects for Wind Energy Development in Consideration of a Cumulative Appraisal of Botanical, Faunal, Societal, and Cultural Values in Swedish Boreal Forests2023Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Renewable energy development is breaking global records each year. European and national Swedish legislation target substantial portions of wind energy production by 2040. Sweden has ambitious objectives for wind energy, with plans to nearly triple its wind energy proportion in the next 17 years. However, expanding wind energy also requires using forest lands, which raises concerns for biodiversity and landscape fragmentation.

    The objective of this study is to determine the values impacted by wind energy development in the Swedish boreal forest to identify appropriate low-impact locations for the construction of Wind Turbine Generators (WTG). The study employs an Analytic Hierarchy Process (AHP) and a Weighted Overlay Analysis (WOA) to categorise potential areas for WTG deployment. Twenty-four input constraints are distributed into six categories and analysed in three stages, resulting in a suitability map and a numerical data output.

    The analysis conducted across six northern boreal counties indicates that significant parts of northern Sweden are unsuitable for wind energy development due to insufficient wind speeds and numerous water bodies. Cultural and botanical value areas further limit some areas' potential for wind energy development. The findings indicate that 25.85% of the northernmost six counties are viable for constructing wind energy facilities, surpassing the national target area for renewable energy by a considerable margin.

    The research indicates that forested boreal counties in Sweden provide significant potential for the sustainable development of wind energy, whilst preserving biodiversity and avoiding interference with faunal, societal, and cultural values.

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  • 198.
    Garcia-Urquia, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik. National Autonomous University of Honduras.
    Establishing Rainfall Frequency Contour Lines as thresholds for rainfall-induced landslides in Tegucigalpa, HondurasIn: Natural Hazards, ISSN 0921-030X, E-ISSN 1573-0840Article in journal (Refereed)
  • 199.
    Garcia-Urquia, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik. National Autonomous University of Honduras.
    Rainfall-induced Landslide Database for Tegucigalpa, Honduras, 1980-20052015Report (Other academic)
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  • 200.
    Garcia-Urquia, Elias
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik. National Autonomous University of Honduras.
    The Use of Press Archives in the Temporal and Spatial Analysis of Rainfall-Induced Landslides in Tegucigalpa, Honduras, 1980-20052015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The scarcity of data poses a challenging obstacle for the study of natural disasters, especially in developing countries where the social vulnerability plays as important a role as the physical vulnerability.  The work presented in this thesis is oriented towards the demonstration of the usefulness of press archives as a data source for the temporal and spatial analysis of landslides in Tegucigalpa, Honduras for the period between 1980 and 2005.  In the last four decades, Tegucigalpa has been characterized by a disorganized urban growth that has significantly contributed to the destabilization of the city’s slopes.  In the first part of the thesis, a description of the database compilation procedure is provided.  The limitations of using data derived from press archives have also been addressed to indicate how these affect the subsequent landslide analyses.  In the second part, the temporal richness offered by press archives has allowed the establishment of rainfall thresholds for landslide occurrence.  Through the use of the critical rainfall intensity method, the analysis of rainfall thresholds for 7, 15, 30 and 60 antecedent days shows that the number of yielded false alarms increases with the threshold duration.  A new method based on the rainfall frequency contour lines was proposed to improve the distinction between days with and without landslides.  This method also offers the possibility to identify the landslides that may only occur with a major contribution of anthropogenic disturbances as well as those landslides induced by high-magnitude rainfall events.  In the third part, the matrix method has been employed to construct two landslide susceptibility maps: one based on the multi-temporal press-based landslide inventory and a second one based on the landslide inventory derived from an aerial photograph interpretation carried out in 2014.  Despite the low spatial accuracy provided by the press archives in locating the landslides, both maps exhibit 69% of consistency in the susceptibility classes and a good agreement in the areas with the highest propensity to landslides.  Finally, the integration of these studies with major actions required to improve the process of landslide data collection is proposed to prepare Tegucigalpa for future landslides.  

    List of papers
    1. The use of press data in the development of a database for rainfall-induced landslides in Tegucigalpa, Honduras, 1980–2005
    Open this publication in new window or tab >>The use of press data in the development of a database for rainfall-induced landslides in Tegucigalpa, Honduras, 1980–2005
    2014 (English)In: Natural Hazards, ISSN 0921-030X, E-ISSN 1573-0840, Vol. 73, no 2, p. 237-258Article in journal (Refereed) Published
    Abstract [en]

    The capital city of Honduras, Tegucigalpa, suffers from the occurrence of destructive landslides on a yearly basis. During the rainy season, damages to infrastructure as well as injuries, casualties and homeless individuals resulting from landslides are reported in the press. This paper presents the development of a database for rainfall-induced landslides for the period 1980–2005, based on the news reported by two local newspapers. The editions comprehended during the study period have been scrutinized, and articles focusing on landslides, tropical storms, hurricanes, floods and vulnerability of the city have been collected. The interpretation of these archives has allowed the compilation of valuable data of approximately 400 landslides. The analyses of monthly and annual precipitation during the study period show how extreme rainfall events like Hurricane Mitch in October of 1998 have significantly contributed to the initiation of landslides. In addition, the assessment of the slums and neighborhoods affected by landslides during the study period reveals an evident link between the social and physical vulnerability of Tegucigalpa. In order to estimate the reliability of this press-based database, the set of landslides that have been reported as a result of Hurricane Mitch in the press archives has been compared with two inventories based on the interpretation of aerial photographs taken in 1999 and 2001. It is shown that the analysis of the landslide damage left after the hurricane can be enriched with the detailed temporal data provided in the archives and the precise location of these events determined by the aerial photographs. Despite the difficulties faced in the compilation of this database, a good comprehension of the temporal and spatial distribution of landslides in Tegucigalpa has been achieved.

    National Category
    Geotechnical Engineering
    Research subject
    Engineering science with specialization in Applied Mechanics
    Identifiers
    urn:nbn:se:uu:diva-222910 (URN)10.1007/s11069-014-1043-5 (DOI)000340490100006 ()
    Funder
    Sida - Swedish International Development Cooperation Agency, 54100006
    Available from: 2014-04-15 Created: 2014-04-15 Last updated: 2017-12-05
    2. Rainfall thresholds for the occurrence of urban landslides in Tegucigalpa, Honduras: An application of the critical rainfall intensity
    Open this publication in new window or tab >>Rainfall thresholds for the occurrence of urban landslides in Tegucigalpa, Honduras: An application of the critical rainfall intensity
    2015 (English)In: Geografiska Annaler. Series A, Physical Geography, ISSN 0435-3676, E-ISSN 1468-0459, Vol. 97, no 1, p. 61-83Article in journal (Refereed) Published
    National Category
    Civil Engineering
    Research subject
    Engineering science with specialization in Applied Mechanics
    Identifiers
    urn:nbn:se:uu:diva-243003 (URN)10.1111/geoa.12092 (DOI)000350500400005 ()
    Funder
    Sida - Swedish International Development Cooperation Agency, 54100006
    Available from: 2015-02-03 Created: 2015-02-03 Last updated: 2017-12-05
    3. Establishing Rainfall Frequency Contour Lines as thresholds for rainfall-induced landslides in Tegucigalpa, Honduras
    Open this publication in new window or tab >>Establishing Rainfall Frequency Contour Lines as thresholds for rainfall-induced landslides in Tegucigalpa, Honduras
    (English)In: Natural Hazards, ISSN 0921-030X, E-ISSN 1573-0840Article in journal (Refereed) Submitted
    Keywords
    rainfall threshold, triggering rainfall, antecedent rainfall, urban landslides, rainfall frequency contour lines, Tegucigalpa
    National Category
    Other Earth and Related Environmental Sciences
    Research subject
    Earth Science with specialization in Environmental Analysis
    Identifiers
    urn:nbn:se:uu:diva-264502 (URN)
    Funder
    Sida - Swedish International Development Cooperation Agency, 54100006
    Available from: 2015-10-13 Created: 2015-10-13 Last updated: 2017-12-01
    4. Comparison of landslide susceptibility maps derived from press-based and aerial photograph interpretation inventories for Tegucigalpa, Honduras
    Open this publication in new window or tab >>Comparison of landslide susceptibility maps derived from press-based and aerial photograph interpretation inventories for Tegucigalpa, Honduras
    (English)Manuscript (preprint) (Other academic)
    Keywords
    landslide susceptibility index, matrix method, press archives, Tegucigalpa, urban landslides
    National Category
    Other Earth and Related Environmental Sciences
    Research subject
    Earth Science with specialization in Environmental Analysis
    Identifiers
    urn:nbn:se:uu:diva-264500 (URN)
    Funder
    Sida - Swedish International Development Cooperation Agency, 54100006
    Available from: 2015-10-13 Created: 2015-10-13 Last updated: 2015-11-13
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