Sökning: "ecosystems"

Visar resultat 11 - 15 av 548 avhandlingar innehållade ordet ecosystems.

  1. 11. Making Blue Carbon : Coastal Ecosystems at the Science-Policy Interface

    Detta är en avhandling från Lund University (Media-Tryck)

    Författare :Terese Thoni; [2019-09]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; climate change; UNFCCC; science-policy interface; Blue Carbon; coastal ecosystems; klimatförändringarna; kustnära ekosystem; blått kol; relationen mellan vetenskap och politik; UNFCCC;

    Sammanfattning : Climate change is a growing threat to mankind. The message from the scientific community is clear: we need to act fast and profoundly. The political response has, however, been slow. The likelihood that we will be able to meet our political climate goals only by reducing emissions is slim. LÄS MER

  2. 12. Extinctions and Ecosystem Stability

    Detta är en avhandling från Gothenburg : Chalmers tekniska högskola

    Författare :Susanne Pettersson; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; structural stability; ecosystems; interaction structure; Generalised Lotka-Volterra; complexity; local stability; dynamical systems; stability;

    Sammanfattning : Human society's expansion and demand for both biotic and abiotic natural resources exert a large pressure on ecosystems around the globe. Ecosystems are complex networks of species interacting with each other and their physical surroundings. LÄS MER

  3. 13. Ice, wood and rocks regulating elements in riverine ecosystems

    Detta är en avhandling från Umeå : Umeå universitet, Institutionen för ekologi, miljö och geovetenskap

    Författare :Johanna Engström; Christer Nilsson; Roland Jansson; James Helfield; Tenna Riis; [2010]
    Nyckelord :riparian zone; timber floating; river restoration; cut-off side channels; hydrochory; large wood; anchor ice; fish;

    Sammanfattning : Riparian ecosystems are of great importance in the landscape, connecting landscape elements longitudinally and laterally and often encompassing sharp environmental gradients in ecological processes and communities. They are influenced by fluvial disturbances such as flooding, erosion and sediment deposition, which create dynamic and spatially heterogeneous habitats that support a high diversity of species. LÄS MER

  4. 14. Denitrification: from genes to ecosystems

    Detta är en avhandling från ; Department of Microbiology, Swedish University of Agricultural Sciences

    Författare :Christopher Jones; Sveriges lantbruksuniversitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Denitrification is a part of the global nitrogen cycle in which fixed nitrogen in the biosphere is returned to the atmosphere, which is mediated by diverse communities of microorganisms. This thesis seeks to gain a greater understanding of the ecology of denitrifying microorganisms by examining the pathway from four different aspects; gene, population, community, and ecosystem. LÄS MER

  5. 15. Tackling the economics of ecosystems

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Anne-Sophie Crépin; [2002]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Environmental economics; Miljöekonomi; Ekosystem; ekonomiska aspekter; Våtmarker; Korallrev; Skogsekologi;

    Sammanfattning : .... LÄS MER