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  2. Source–sink dynamics - Wikipedia

    en.wikipedia.org/wiki/Source–sink_dynamics

    Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms. Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two ...

  3. Freshwater ecosystem - Wikipedia

    en.wikipedia.org/wiki/Freshwater_ecosystem

    Of North American freshwater species, an estimated 48.5% of mussels, 22.8% of gastropods, 32.7% of crayfishes, 25.9% of amphibians, and 21.2% of fish are either endangered or threatened. [24] Extinction rates of many species may increase severely into the next century because of invasive species, loss of keystone species, and species which are ...

  4. Fish and Wildlife Coordination Act - Wikipedia

    en.wikipedia.org/wiki/Fish_and_Wildlife...

    The Fish and Wildlife Coordination Act (FWCA) of the United States was enacted March 10, 1934, to protect fish and wildlife when federal actions result in the control or modification of a natural stream or body of water. The Act provides the basic authority for the involvement of the United States Fish and Wildlife Service (Service) in ...

  5. Edge effects - Wikipedia

    en.wikipedia.org/wiki/Edge_effects

    In ecology, edge effects are changes in population or community structures that occur at the boundary of two or more habitats. [ 1 ] Areas with small habitat fragments exhibit especially pronounced edge effects that may extend throughout the range. As the edge effects increase, the boundary habitat allows for greater biodiversity.

  6. Essential fish habitat - Wikipedia

    en.wikipedia.org/wiki/Essential_Fish_Habitat

    Essential Fish Habitat (EFH) was defined by the U.S. Congress in the 1996 amendments to the Magnuson-Stevens Fishery Conservation and Management Act, or Magnuson-Stevens Act, as "those waters and substrate necessary to fish for spawning, breeding, feeding or growth to maturity." [1] Implementing regulations clarified that waters include all ...

  7. Marine habitat - Wikipedia

    en.wikipedia.org/wiki/Marine_habitat

    A marine habitat is a habitat that supports marine life. Marine life depends in some way on the saltwater that is in the sea (the term marine comes from the Latin mare, meaning sea or ocean). A habitat is an ecological or environmental area inhabited by one or more living species. [1] The marine environment supports many kinds of these habitats.

  8. Marine conservation - Wikipedia

    en.wikipedia.org/wiki/Marine_conservation

    e. Marine conservation, also known as ocean conservation, is the protection and preservation of ecosystems in oceans and seas through planned management in order to prevent the over-exploitation of these marine resources. Marine conservation is informed by the study of marine plants and animal resources and ecosystem functions and is driven by ...

  9. Habitat conservation - Wikipedia

    en.wikipedia.org/wiki/Habitat_conservation

    Habitat conservation is a management practice that seeks to conserve, protect and restore habitats and prevent species extinction, fragmentation or reduction in range. [1] It is a priority of many groups that cannot be easily characterized in terms of any one ideology .

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