Search for dissertations about: "western Indian ocean"

Showing result 6 - 10 of 27 swedish dissertations containing the words western Indian ocean.

  2. 6. Diazotrophy and diversity of benthic cyanobacteria in tropical coastal zones

    Author : Karolina Bauer; Birgitta Bergman; Paul K. Hayes; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Marine cyanobacteria; benthic nitrogen fixation; diversity; diazotrophy; Lyngbya majuscula; Zanzibar; western Indian Ocean; Plant physiology; Växtfysiologi;

    Abstract : Discoveries in recent years have disclosed the importance of marine cyano-bacteria in the context of primary production and global nitrogen cycling. It is hypothesized here that microbial mats in tropical coastal habitats harbour a rich diversity of previously uncharacterized cyanobacteria and that benthic marine nitrogen fixation in coastal zones is substantial. READ MORE

  4. 7. Ecology and genetic population structure of Indo-Pacific bottlenose dolphins in East Africa

    Author : Anna Särnblad Hansson; Per Berggren; Anders Angerbjörn; Göran Spong; Stockholms universitet; []
    Keywords : Tursiops aduncus; population size; distribution; social structure; behaviour; conservation status; mitochondrial DNA; microsatellites; Zanzibar; western Indian Ocean; NATURAL SCIENCES; NATURVETENSKAP; zoologisk ekologi; Animal Ecology;

    Abstract : Many marine mammal populations are threatened by anthropogenic activities. The Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar are subject to high levels of bycatch, negative impact from tourism and were previously hunted. READ MORE

  5. 8. 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

  6. 9. Patterns of fish larvae and zooplankton distribution in mangrove-seagrass seascapes of East Africa

    Author : Barnabas Alphonce Tarimo; Martin Gullström; Monika Winder; Mats Björk; Gunilla Rosenqvist; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fish larvae; zooplankton; population dynamics; community structure; environmental variables; seasonal variation; habitat use; mangroves; seagrass meadows; seascape connectivity; Tanzania; western Indian Ocean; marin ekologi; Marine Ecology;

    Abstract : Mangroves and seagrass meadows create coastal seascapes acting as breeding and nursery grounds for many fish species in tropical areas. Despite increased awareness on the role of these coastal habitats to fish, less knowledge is given to fish larvae distribution and population dynamics, limiting the understanding of major drivers of fish population dynamics and fisheries resources management, particularly in understudied regions such as the Western Indian Ocean. READ MORE

  7. 10. Effects of Marine Protected Areas on Tropical Seagrass Ecosystems

    Author : Elisa Alonso Aller; Johan S Eklöf; Charlotte Berkström; Martin Gullström; Glenn Hyndes; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; coastal ecosystems; seagrass; marine protected areas; management; conservation; fish; herbivory; Western Indian Ocean; East Africa; tropical; Marine Ecology; marin ekologi;

    Abstract : Seagrass beds are highly productive coastal ecosystems that sustain a rich and diverse associated fauna and flora. Increasing anthropogenic pressures threaten seagrass ecosystems and have already led to major seagrass losses across the world. READ MORE