Search for dissertations about: "arthropods"

Showing result 1 - 5 of 27 swedish dissertations containing the word arthropods.

  1. 1. Evolution and taxonomy of Cambrian arthropods from Greenland and Sweden

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Martin Stein; Uppsala universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cambrian; Arthropods; Trilobites; Evolution; Greenland; Sweden; NATURAL SCIENCES Earth sciences Exogenous earth sciences Historical geology and palaeontology; NATURVETENSKAP Geovetenskap Exogen geovetenskap Historisk geologi och paleontologi;

    Abstract : Arthropods have a rich fossil record spanning the Phanerozoic. Biomineralized forms such as the extinct trilobites are particularly common and are proven index fossils for biostratigraphy. Forms with an unmineralized cuticle are more rare, preserved only in so called konservat lagerstätten. READ MORE

  2. 2. The impact of cormorant nesting colonies on plants and arthropods

    University dissertation from Stockholm : Department of Botany, Stockholm University

    Author : Gundula S. Kolb; Stockholms universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; seabirds; cormorants; islands; nitrogen; phosphorus; plants; arthropods; δ15N; Baltic Sea; ecological stoichiometry; species richness; species composition; numeric response; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; växtekologi; Plant Ecology;

    Abstract : Seabirds concentrate large amounts of marine nutrients on their nesting islands. This nutrient input can have large consequences for island food webs and community structure. The high nutrient load may also cause runoff into surrounding waters and affect marine communities. READ MORE

  3. 3. Predators in low arctic tundra and their impact on community structure and dynamics

    University dissertation from Umeå : Ekologi och geovetenskap

    Author : Maano Aunapuu; Umeå universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; arthropods; coexistence; community dynamics; competition; food webs; hypothesis of exploitation ecosystems; intraguild predation; small mustelids; trophic cascades; Ekologi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi; zooekologi; Animal Ecology;

    Abstract : The abundance of predators and their impact on ecosystem dynamics is a vividly discussed topic in current ecology. In my studies, incorporating field observations, field experiments and theoretical modeling, I explored the importance of predators and predation in a low arctic tundra ecosystem in northern Norway. READ MORE

  4. 4. Community and food web assembly on virgin habitat islands - The nunatak saga

    University dissertation from Department of Biology, Lund University

    Author : Maria Ingimarsdottir; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; allochthonous material; arthropods; community assembly; corridor; dispersal; Iceland; metacommunity; nunataks; primary succession; stable isotopes.;

    Abstract : Popular Abstract in Icelandic Landnám á jökulskerjum Plöntur hafa lengi verið taldar nauðsynlegar til að dýr geti numið land en þessi sýn er að breytast því rannsóknir hafa sýnt að smádýr nema oft land á undan plöntum. Landnám bæði plantna og dýra getur hafist um leið og nýtt land myndast en til að landnám takist þurfa nokkrir þættir að fara saman. READ MORE

  5. 5. Biodiversity & Biofuel. Harvest of Logging Residue Affects Arthropods

    University dissertation from Göteborg : University of Gothenburg

    Author : Karolina Nittérus; Göteborgs universitet.; Gothenburg University.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biodiversity; beetles; biofuel; Carabidae; Cerambycidae; Celeoptera; forestry; habitat; structure; logging residue; Lycosidae; microhabitat choice; slash; species compositin; species richness; spiders; structural comlexity; whole-tree harvest;

    Abstract : .... READ MORE