Sökning: "fishing overfishing"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden fishing overfishing.

  1. 1. Exploring the resilience in coral reefs

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

    Sammanfattning : 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. LÄS MER

  3. 2. Patterns of small-scale coastal fisheries and local fisheries management in Tanzania : adaptation to a changing climate

    Författare :Mathew Ogalo Silas; Martin Gullström; Hans W. Linderholm; Mattias Sköld; Patrick Polte; Christina Hicks; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Small-scale fisheries; tropical coastal seascape; nearshore-offshore linkages; coastal ecosystems; fish catch landings; communities; adaptation; climate change; fishing overfishing; Marine Ecotoxicology; marin ekotoxikologi;

    Sammanfattning : Coastal habitats like mangroves, seagrass meadows, coral reefs, and adjacent offshore waters constitute an important part of the tropical coastal seascape. They provide conducive environmental conditions for fish and other marine animals, which serve as food and income for coastal communities around the world. LÄS MER

  4. 3. Effects of community- and government-managed marine protected areas on tropical seagrass and coral communities

    Författare :Angelica Chirico; Johan Eklöf; Nils Kautsky; Even Moland; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; coastal ecosystems; conservation; marine spatial planning; locally managed; fisheries closure; benthic communities; fish; foundation species; macroalgae; secondary succession; life-history; trait variability; plasticity; tourism; human disturbance; fishing; experimental research; Western Indian Ocean; causal modelling; structural equation model; permanova; multivariate data; marin ekotoxikologi; Marine Ecotoxicology;

    Sammanfattning : Tropical seagrass beds and coral reefs are among the most productive and diverse ecosystems on Earth and provide ecosystem services, such as fish production and coastal protection, and support livelihoods of millions of people. At the same time, these ecosystems are threatened globally by anthropogenic disturbances, such as overfishing, pollution and global warming. LÄS MER

  5. 4. Noble Crayfish (Astacus astacus) in a Changing World : Implications for Management

    Författare :Jenny K. M. Zimmerman; Thomas Palo; Nils Ekelund; Jostein Skurdal; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Noble crayfish Astacus astacus ; CPUE; climate change; water regulation; body growth; reintroduction; sustainable fishing; monitoring.;

    Sammanfattning : The noble crayfish (Astacus astacus) is critically endangered in Sweden. This is mainly due to the crayfish plague (Aphanomyces astaci), a lethal disease that, among other things, can be spread through the stocking of fish from contaminated water or contaminated fishing gear. LÄS MER

  7. 5. Fisheries Management under Individual Transferable Quota : Outcomes for Ecology and Equity

    Författare :Maartje Oostdijk; Brynhildur Davidsdóttir; Gunnar Stefansson; Ingrid Stjernquist; Mary Wisz; Henrik Österblom; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fisheries management; Individual transferable quota; common pool resources; Physical Geography; naturgeografi;

    Sammanfattning : The management of marine resources pose a difficult commons problem as monitoring behavior is difficult and benefit flows from the resources are uncertain. Implementing individual transferable quota (ITQ) is a management regime in which quasi-property rights are assigned for an often mobile and uncertain environmental resource, fish or marine invertebrates. LÄS MER