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  1. History

    The history of the term is somewhat vague. It has been used in many contexts: forest classifications (Loucks, … See more

    Ecoregion - Wikipedia

    • An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flor… See more

    Definition and categorization

    An ecoregion is a "recurring pattern of ecosystems associated with characteristic combinations of soil and landform that characterise that region". Omernik (2004) elaborates on this by defining ecoregions as: "areas … See more

    Importance

    The use of the term ecoregion is an outgrowth of a surge of interest in ecosystems and their functioning. In particular, there is awareness of issues relating to spatial scale in the study and manageme… See more

    Terrestrial

    Terrestrial ecoregions are land ecoregions, as distinct from freshwater and marine ecoregions. In this context, terrestrial is used to mean "of land" (soil and rock), rather than the more general sense "of Earth" (which incl… See more

    Marine

    Marine ecoregions are: "Areas of relatively homogeneous species composition, clearly distinct from adjacent systems….In ecological terms, these are strongly cohesive units, sufficiently large to encompas… See more

    Freshwater

    A freshwater ecoregion is a large area encompassing one or more freshwater systems that contains a distinct assemblage of natural freshwater communities and species. The freshwater species, dy… See more

     
  1. An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species.
    en.wikipedia.org/wiki/Ecoregion
    An ecoregion (ecological region), sometimes called a bioregion, is the next smallest ecologically and geographically defined area beneath "realm" or "ecozone". Ecoregions cover relatively large area of land or water, and contain characteristic, geographically distinct natural communities and species.
    simple.wikipedia.org/wiki/Ecoregion
    Ecoregions are defined by the World Wide Fund for Nature as "relatively large units of land or water containing a distinct assemblage of natural communities and species, with boundaries that approximate the original extent of natural communities prior to major land-use change".
    en.wikipedia.org/wiki/Category:Ecoregions
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  3. List of ecoregions in the United States (EPA) - Wikipedia

  4. Lists of ecoregions - Wikipedia

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    Terrestrial Ecoregions
    Lists of Ecoregions
  5. Ecoregion - Simple English Wikipedia, the free encyclopedia

  6. Terrestrial Ecoregions of the World | Publications | WWF

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    World Wide Fund for Nature
    Importance of Terrestrial Ecoregion