Sökning: "Marine reserves"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Marine reserves.

  1. 1. Effects of contrasting types of marine protected areas on seagrass- and coral communities : are community-based reserves an important complement to government-managed protected areas?

    Författare :Angelica Chirico; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marin ekotoxikologi; Marine Ecotoxicology;

    Sammanfattning : Coastal ecosystems, including seagrass beds and coral reefs, are among the most ecological and economical important ecosystems on Earth. At the same time as these ecosystems support livelihoods of coastal communities they are being highly degraded worldwide. LÄS MER

  3. 2. Masking environmental feedback : Misfits between institutions and ecosystems in Belize and Thailand

    Författare :Miriam Huitric; Carl Folke; Nils Kautsky; Juan Carlos Castilla; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Marine reserves; ecosystem change; sequential exploitation; pathology of resource use; institutions; driving forces; coral reefs; social-ecological systems; mangroves; aquaculture; Belize; Thailand; Maine; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : The thesis analyses relationships between ecological and social systems in the context of coastal ecosystems. It examines human impacts from resource extraction and addresses management and governance behind resource exploitation. LÄS MER

  4. 3. Management Practices for Dealing with Uncertainty and Change : Social-Ecological Systems in Tanzania and Madagascar

    Författare :Maria Tengö; Thomas Elmqvist; Monica Hammer; Carl Folke; Kamaljit Bawa; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; resilience; ecosystem services; local ecological knowledge; traditional ecological knowledge; ecosystem management; agroecosystems; dry tropical forest; social institutions; forest regeneration; sacred forests; taboos; community conservation; Southern Madagascar; Androy; Iraqw; management practices; habitat loss; small reserves; human-dominated ecosystems; social-ecological systems; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : 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. LÄS MER

  5. 4. Food web structures and carbon transfer efficiencies in a brackish water ecosystem

    Författare :Kristin Dahlgren; Ulf Båmstedt; Agneta Andersson; Marja Koski; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbon transfer efficiency; Food web efficiency; zooplankton; production; pelagic; benthic; fatty acids; wax esters; Marine ecology; Marin ekologi;

    Sammanfattning : Two differently structured food webs can be distinguished in the pelagic habitat of aquatic systems; the classical one (autotrophic) with phytoplankton as a base and the microbial food web (heterotrophic) with bacteria as a base. Energy (produced at the basal trophic level) reaches higher trophic levels, i.e. LÄS MER

  7. 5. Identification and implications of fish nurseries in tropical and subtropical seascapes

    Författare :Linda Eggertsen; Charlotte Berkström; Nils Kautsky; Johan Eklöf; Simon Pittman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; marinbiologi; Marine Biology;

    Sammanfattning : Many species of reef fish reside in specific nursery habitats as juveniles. Seagrass meadows, and mangroves are examples of well-recognized nursery habitats, but only recently canopy-forming seaweeds have been found to provide important habitats for some fish species in the tropics. LÄS MER