Search for dissertations about: "Systems Ecology"
Showing result 16 - 20 of 333 swedish dissertations containing the words Systems Ecology.
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16. Ecotoxicological assessment by microcosm tests on plankton communities
Abstract : The aim of this thesis is to present a short-term plankton community toxicity test in laboratory microcosms, with which the effect of the test substance on species abundance and composition of the community is evaluated. This laboratory microcosm is an intermediate between single-species tests and outdoor mesocosm tests. READ MORE
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17. Coping with environmental stress : from the individual and population perspective
Abstract : Natural stress and disturbances are important factors affecting the structure and function of ecosystems. However the magnitude of stress has escalated due to anthropogenic activities. Environmental monitoring and toxicity assessments try to protect ecosystems from unwanted human alterations. READ MORE
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18. The ecology of the plankton fauna in the Gulf of Bothnia
Abstract : The geographical distribution of the Gulf of Bothnia zooplankton species is presented together with observations of abundancies and vertical distributions. The historical development of this plankton community in the last 70 years is discussed.Spring and summer development of the plankton fauna was studiedin the Bothnian Bay. READ MORE
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19. The neglected ecology of the sand goby: Abundance and feeding in the Baltic sublittoral
Abstract : I investigated the ecology and population density of the sand goby, Pomatoschistus minutus, at sub-thermocline depth in the north-western Baltic proper. Most previous research on the sand goby, and the co-occurring closely related common goby, P. READ MORE
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20. Management Practices for Dealing with Uncertainty and Change : Social-Ecological Systems in Tanzania and Madagascar
Abstract : The development of human societies rests on functioning ecosystems. This thesis builds on integrated theories of linked social-ecological systems and complex adaptive systems to increase the understanding of how to strengthen the capacity of ecosystems to generate services that sustain human well-being. READ MORE