Search for dissertations about: "Animal Ecology"

Showing result 11 - 15 of 274 swedish dissertations containing the words Animal Ecology.

  2. 11. Butterfly Diversity and Dispersal in Fragmented Grasslands

    Author : Erik Öckinger; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Djurekologi; Animal ecology; Ekologi; Ecology; Lepidoptera; Landscape ecology; Insects; Species richness; Fragmentation; Mobility; Natural science; Source-sink dynamics; Metapopulations;

    Abstract : During the last decades, the distribution and abundance of many European species of birds, plants and insects in agricultural landscapes have declined due to agricultural intensification. To be able to mitigate these declines, it is essential to know the relative importance on local and regional ecological processes on population persistence and patterns of species richness. READ MORE

  4. 12. Biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins in east Africa

    Author : Omar A. Amir; Per Berggren; Graham Pierce; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Growth; reproduction; feeding ecology; bycatch; organohalogen compounds; dolphins; Tursiops aduncus; Zanzibar; East Africa; Marine ecology; Marin ekologi; zoologisk ekologi; Animal Ecology;

    Abstract : This thesis examines the biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar, Tanzania, based on research conducted and samples collected between 2000 and 2008. Distribution and occurrence are described based on incidental catches (bycatch) in gillnet fisheries. READ MORE

  5. 13. Trophic ecology of meiofauna : Response to sedimentation of phytoplankton blooms in the Baltic Sea

    Author : Francisco J.A. Nascimento; Ragnar Elmgren; Richard Warwick; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Meiofauna; Cyanobacteria; competition; facilitation; ecosystems processes; Marine ecology; Marin ekologi; Marine Ecology; marin ekologi;

    Abstract : Marine soft sediments are the second largest habitat on Earth. How animal communities in this habitat are structured is a central issue in marine ecology. Food is an important limiting factor for many benthic populations, and settling organic matter from phytoplankton blooms is of vital importance to them. READ MORE

  6. 14. Epidemiology and population structure of Campylobacter jejuni and related organisms in wild birds

    Author : Jonas Waldenström; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; epidemiology; Campylobacter lari; population structure; Helicobacter canadensis; Ecology; Parasitology human and animal ; Animal ecology; Djurekologi; Parasitologi människa och djur ; migration; Ekologi; wild birds; Sweden; Campylobacter jejuni;

    Abstract : Campylobacter jejuni is one of the most common causes to bacterial gastroenteritis in the industrialised world. Also other species of the Campylobacter genus give rise to human infections. C. jejuni occurs in many different animal hosts and can be isolated from water sources. READ MORE

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

    Author : Maano Aunapuu; Tarja Oksanen; Ola Atlegrim; Oswald J. Schmitz; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; arthropods; coexistence; community dynamics; competition; food webs; hypothesis of exploitation ecosystems; intraguild predation; small mustelids; trophic cascades; Ekologi; Terrestrial; freshwater and marine ecology; 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