Search for dissertations about: "systemekologi"

Showing result 21 - 25 of 50 swedish dissertations containing the word systemekologi.

  2. 21. Distribution and activity of pelagic fish - acoustic studies in the Baltic Sea

    Author : Tomas Didrikas; Sture Hansson; Thomas Mehner; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pelagic; fish; hydroacoustic; distribution; activity; Baltic; Biology; Biologi;

    Abstract : Fisheries agencies around the Baltic Sea use hydroacoustics to assess stock sizes of herring and sprat. These assessments rely on the assumption that the acoustic properties of Baltic clupeids are the same as North Sea herring. READ MORE

  4. 22. Structuring of benthic communities, with a focus on size-spectra

    Author : Daniel E. Duplisea; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ekosystem i vatten;

    Abstract : .... READ MORE

  5. 23. Aquatic primary producers in toxicity testing : emphasis on the macroalga Ceramium strictum

    Author : Britta Eklund; Murray T. Brown; Stockholms universitet; []
    Keywords : marin ekologi; Marine Ecology;

    Abstract : .... READ MORE

  6. 24. Traps and transformations : Exploring the potential of water system innovations in dryland sub-Saharan Africa

    Author : Elin Enfors; Line Gordon; Christian Valentin; Stockholms universitet; []
    Keywords : smallholder farming; water system innovations; agricultural droughts; multi-functional landscapes; development trajectories; uncertainty; NATURAL SCIENCES; NATURVETENSKAP; naturresurshushållning; Natural Resources Management;

    Abstract : In semi-arid and dry sub-humid sub-Saharan Africa (SSA), high poverty levels and a heavy reliance on small-scale rainfed agriculture make rural livelihoods difficult. Upgrading current farming systems, in a way that safeguards productivity beyond field-scale, is urgent. READ MORE

  7. 25. Land Use, Freshwater Flows and Ecosystem Services in an Era of Global Change

    Author : Line Gordon; Carl Folke; David Molden; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; freshwater; green water; ecosystem services; integrated water resources management; food production; land use and land cover change; vulnerability; resilience; hydrological cycle; global change; Australia; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : The purpose of this thesis is to analyse interactions between freshwater flows, terrestrial ecosystems and human well-being. Freshwater management and policy has mainly focused on the liquid water part (surface and ground water run off) of the hydrological cycle including aquatic ecosystems. READ MORE