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Found 5 swedish dissertations matching the above criteria.

  2. 1. Anthropogenic Disturbances and Shifts in Tropical Seagrass Ecosystems

    Author : Johan S. Eklöf; Nils Kautsky; Patrik Rönnbäck; Teresa Alcoverro; Stockholms universitet; []
    Keywords : Aquaculture; feedback mechanisms; Kenya; management; overgrazing; regime shift; resilience; seagrass; seaweed farming; sea urchins; Tanzania; trophic cascades; Zanzibar; NATURAL SCIENCES; NATURVETENSKAP; Marine Ecotoxicology; marin ekotoxikologi;

    Abstract : Seagrasses constitute the basis for diverse and productive ecosystems worldwide. In East Africa, they provide important ecosystem services (e.g. fisheries) but are potentially threatened by increasing resource use and lack of enforced management regulations. READ MORE

  4. 2. Macroalgal community dynamics on coral reefs : Implications for management

    Author : Erik Mörk; Nils Kautsky; Magnus Nyström; Tim R. McClanahan; Stein Fredriksen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Macroalgae; Coral Reefs; Herbivory; Nutrients; Ecosystem change; Fish; Sea Urchins; East Africa; marin ekotoxikologi; Marine Ecotoxicology;

    Abstract : Although rather inconspicuous on healthy coral reefs, macroalgae form the basis of coral food webs. Today, macroalgae are generally increasing and many reefs undergo transitions from coral to macroalgal dominance resulting from e.g. enhanced nutrient loading or increased fishing. READ MORE

  5. 3. The role of the jelly coat and the block to polyspermy in the fertilazation os sea urchins

    Author : Berndt E. Hagström; Stockholms högskola; []
    Keywords : ;

    Abstract : .... READ MORE

  6. 4. Improving and inhibiting agents acting on the gametes and on their interaction at fertilization in sea urchins

    Author : Elsa Wicklund; Stockholms högskola; []
    Keywords : ;

    Abstract : .... READ MORE

  7. 5. Exploring the resilience in coral reefs

    Author : Jerker Lokrantz; Magnus Nyström; Morgan Pratchett; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Coral Reefs; Resilience; Functional Groups; Vulnerability; Overfishing; Ecosystem Indicators; Tanzania; Zanzibar; Marine ecology; Marin ekologi; naturresurshushållning; Natural Resources Management;

    Abstract : Considering the unprecedented global decline of coral reefs concerns about their future existence are well-justified. Safeguarding ecological resilience (i.e. the capacity of ecosystems to absorb disturbance without changing their identity) has become a prime goal for management in order to combat further degradation of coral reefs. READ MORE