Bioregion

A bioregion is a geographical area, on land or at sea, defined not by administrative boundaries but by topographic features, ecological systems, and distinct communities of characteristic plant and animal species.^[1][2][3][4] The term is used within the research fields of Biology, Ecology, Biogeography, and Biocultural Anthropology, and it was adopted and popularized in the mid-1970s by a new school of philosophy called Bioregionalism. In biogeographical terms, a bioregion is generally considered to be smaller in scale than a Biogeographical Realm or Ecoprovince, but larger than an Ecoregion (Level IV), as defined by the U.S. Environmental Protection Agency.^[5]