What is not one of the factors that are used to identify and distinguish ranks of global cities?1/10/2024 Possibly Extinct (species) or Possibly Eliminated (ecosystems) - Known from only historical occurrences but still some hope of rediscovery. Presumed Eliminated(ecosystems, i.e., ecological communities and systems) - Eliminated throughout its range, due to loss of key dominant and characteristic taxa and/or elimination of the sites and ecological processes on which the type depends. Presumed Extinct (species) - Not located despite intensive searches and virtually no likelihood of rediscovery. Global conservation status ranks are assigned by NatureServe scientists or by a designated lead office in the NatureServe network. Listed below are definitions for interpreting NatureServe’s global (range-wide) conservation status ranks. NatureServe Global Conservation Status Definitions Variant National and Subnational Conservation Status Ranks.National (N) and Subnational (S) Conservation Status Ranks. NatureServe National and Subnational Conservation Status Definitions. Infraspecific Taxon Global Conservation Status Ranks.Variant Global Conservation Status Ranks.NatureServe Global Conservation Status Rank Definitions. Also, where no distinction is made, a definition is identical for species and ecological communities. Note that the term occurrences in these definitions refers specifically to Element Occurrences. Definitions of NatureServe Conservation Status Ranks
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