FACTOID # 10: The total number of state executions in 2005 was 60: 19 in Texas and 41 elsewhere. The racial split was 19 Black and 41 White.
 
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Encyclopedia > Rare species

Rare species is an organism which is very uncommon or scarce. This designation may be applied to either a plant or animal taxon, and is distinct from the term "endangered species". Designation of a rare species is usually made by an official body such as the IUCN, national government, state or province. 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. In biology and ecology, an organism (in Greek organon = instrument) is a living complex adaptive system of organs that influence each other in such a way that they function as a more or less stable whole. ... The endangered Sea Otter An endangered species is a population of organisms (usually a taxonomic species), which is either (a) so few in number or (b) threatened by changing environmental or predation parameters that it is at risk of becoming extinct. ... The World Conservation Union or International Union for Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ... Endemic, in a broad sense, can mean belonging or native to, characteristic of, or prevalent in a particular geography, race, field, area, or environment; Native to an area or scope. ...


A species may be endangered, but not considered rare, if the threats to its habitat from human taking pose a considerable risk to the viability of the species. It is unusual, but theroetically possible for a species to be rare, but not considered endangered. Such a circumstance might arise for a small colony of organisms that is remote from human intervention and in a stable ecosystem. the circumstance could also arise merely by dent of no agency acting on a classification of "endangered". In ecology, an ecosystem is a combination of all the living and non-living elements of an area. ...


Examples of rare species


  Results from FactBites:
 
Rare species - Wikipedia, the free encyclopedia (201 words)
Rare species is an organism which is very uncommon or scarce.
Designation of a rare species is usually made by an official body such as the IUCN, national government, state or province.
A species may be endangered, but not considered rare, if the threats to its habitat from human taking pose a considerable risk to the viability of the species.
CEP: Biodiversity. Rare species in danger of extinction (2712 words)
Rare and endemic species are poor competitors and are therefore at risk of extinction.
The 30 endangered birds are considered to be highly sensitive and are included in the list of rare species, although they used to be common, the population numbers have decreased due to increased anthropogenic pressure on their natural habitats.
This specie is a member of the carp family and is a rare specie whose population is declining.
  More results at FactBites »

 
 

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