Search for dissertations about: "seaweed"

Showing result 16 - 20 of 41 swedish dissertations containing the word seaweed.

  2. 16. 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. 17. Women in the Seascape : Gender, Livelihoods and Management of Coastal and Marine Resources in Zanzibar, East Africa

    Author : Sara Fröcklin; Maricela de la Torre-Castro; Lars Lindström; Nils Kautsky; Meryl J. Williams; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Gender; fisheries; invertebrate harvesting; seaweed farming; coastal and marine management; marin ekotoxikologi; Marine Ecotoxicology;

    Abstract : All over the world, coastal populations depend on, and influence, the environment in pursue of their livelihoods. Managing the environment, while meeting the growing demand for marine resources, is a challenge. It further requires knowledge about all actors. READ MORE

  5. 18. Macroalgae in tropical seascapes : regulating factors and functions in the coastal ecosystem

    Author : Gustaf Lilliesköld Sjöö; Max Troell; Nils Kautsky; Lena Kautsky; Alina Szmant; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Macroalgae; Coral reefs; Nutrients; Herbivory; Ecological functions; East Africa; Regulating factors; Anthropogenic influence; Seaweed farming; Bioindicator; marin ekotoxikologi; Marine Ecotoxicology;

    Abstract : Although macroalgae usually are inconspicuous on pristine coral reefs, they often thrive on reefs that are subjected to various types of anthropogenic disturbance. This thesis consists of five papers and investigates how biomass and composition of macroalgal communities on coral reefs are affected by regulating factors, such as nutrient availability, herbivory, substrate availability and hydrodynamic forces. READ MORE

  6. 19. Humans and Seagrasses in East Africa : A social-ecological systems approach

    Author : Maricela de la Torre-Castro; Nils Kautsky; Carl Folke; Patrik Rönnbäck; Edward H. Allison; Stockholms universitet; []
    Keywords : seagrasses; social-ecological systems; institutions; seaweed farming; artisanal fisheries; common-pool resources; natural resource management; Zanzibar; Tanzania; East Africa; Western Indian Ocean;

    Abstract : The present study is one of the first attempts to analyze the societal importance of seagrasses (marine flowering plants) from a Natural Resource Management perspective, using a social-ecological systems (SES) approach. The interdisciplinary study takes place in East Africa (Western Indian Ocean, WIO) and includes in-depth studies in Chwaka Bay, Zanzibar, Tanzania. READ MORE

  7. 20. Polymer extraction and utilization of brown algal biomass

    Author : Martin Sterner; Ulrica Edlund; Fredrik Gröndahl; Marguerite Rinaudo; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algae; Saccharina latissima; alginate; brown seaweed; extraction; filament; chelation; gel; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Aquaculture is a field with a world changing potential. The areas at sea are enormous and aquatic cultivations impact both the environment and local ecology far less than land based cultivations. In the realm of algae, abundancies exists of nutrition, water and accessible sunlight, but there is constant shortage of places to dwell. READ MORE