Rare species
Translation- Rare species
A rare species is an
organism which is very uncommon or scarce. This designation may be applied to either a plant or animal taxon, and may be distinct from the term "endangered" or "threatened species ".Designation of a rare species may be made by an official body such as a national government, state or province. However, the term is used more commonly without reference to a specific criteria. TheIUCN does not normally make such designations but may use the term in its scientific discussions. [ [http://www.iucnredlist.org/info/categories_criteria2001 Categories & Criteria (version 3.1) IUCN, 2001.] ]The concept of rarity is established from having a very small number of organisms worldwide, usually a number less than 10,000; however, the concept is also influenced by having a very narrow endemic range and/or fragmented habitat. [R.MacNally and G.W.Brown, "
Reptile s and Habitat Fragmentation in the Box-ironbush Forests of Central Victoria,Australia : Predicting Compositional Change and Faunal Nested-ness",Oecologia 128:116-125 (2001)]A species may be endangered or vulnerable, but not considered rare if, for example, it has a large, dispersed population but its numbers are declining rapidly or predicted to do so. Rare species are generally considered threatened simply because the inability of
small population size s to recover from stochastic events, and the potential for a rapid decline in population.Examples of rare species
*"
Acarospora admissa ",lichen
*Baker's larkspur
*Giant Panda , mammal
*Golden lion tamarin , mammal
*Hickman's potentilla , wildflower
*Mason's Lilaeopsis
*Red Panda , mammal
*San Bruno elfin butterfly
*San Francisco garter snake
*Showy Indian clover , "trifolium amoenum "
*Soft bird's beak , plant
*Spring vetchling , "Lathyrus sphaericus", endemic toKullaberg Nature Preserve and one other location in Sweden.
*Weeping elm , tree
*Snow leopard , mammal
*Javierus Rivarolus , fishee also
*
Biodiversity Action Plan
*Critical depensation
*Recovery Plan
*Common species
*Abundance (ecology) References
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