Sökning: "trophic level effect"

Visar resultat 21 - 25 av 33 avhandlingar innehållade orden trophic level effect.

  1. 21. Role of ecological processes in determining effects of contaminants in aquatic ecosystems

    Författare :Anna-Lea Golz; Clare Bradshaw; Karen Kidd; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ecosystem approach; ionizing radiation; HBCDD; microcosm; species interactions; indirect effects; marin ekotoxikologi; Marine Ecotoxicology;

    Sammanfattning : Aquatic ecosystems cover approximately 70% of the Earth’s surface and support a wide range of ecosystem services. Despite their importance, aquatic ecosystems are increasingly exposed to anthropogenic stressors, such as contaminants and climate change impacts. LÄS MER

  3. 22. Mesenchymal stem cell regeneration and differentiation after anti inflammatory drug exposure

    Författare :Maritha Kumlin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Traumatic and degenerative pathologies of the musculoskeletal system are common and often involve injuries of multiple mesenchymal tissues including bone, cartilage, tendons and ligaments. Medical intervention is frequently initiated to relieve pain, restore biomechanical function, with aim to return to the desired level of activity as soon as possible. LÄS MER

  4. 23. On the Ecology of Saprotrophic Fungi and Bacteria in Soil: Biotic and Abiotic Control of Growth Rates

    Författare :Johannes Rousk; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; decomposer ecology; soil pH; temperature relationship; Fungal growth; litter decomposition; bacterial growth; C:N;

    Sammanfattning : Two groups of organisms dominate the decomposition in soil: fungi and bacteria. One of the most important parameters to optimise for any organism is its growth, and thus a direct way to study the effect of environmental factors on fungi and bacteria in soil is to measure their growth rate. LÄS MER

  5. 24. From Sea to Society - Climate Change, Microbial Community Interactions and Assessing Climate Risk on Society

    Författare :Gurpreet Kaur-Kahlon; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Phytoplankton; Bacteria; Climate change; Quorum sensing; Microbial blooms; Vulnerability factors; Arabian Sea; Southwest India;

    Sammanfattning : Unicellular organisms, microalgae and bacteria, less than one millimeter in size make the world go round. Phytoplankton and cyanobacteria, for example, plays an inevitable role contributing 50-85% to the world’s oxygen via photosynthesis. LÄS MER

  7. 25. The galanin type 2 receptor: molecular biological, histochemical and electrophysiological studies

    Författare :Kang Zheng; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Galanin;

    Sammanfattning : In the present thesis, the aim was to probe the distribution and functions of galanin type 2 receptor (GalR2) in the rodent brain. In order to overcome the lack of a reliable antibody to localize GalR2 by immunohistochemistry, we generated a construct which expresses GalR2 tagged with enhanced GFP (EGFP). LÄS MER