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Encyclopedia > Least Concern
Conservation status
the risk of extinction
Extinction

Extinct
Extinct in the Wild
The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... The Dodo, shown here in illustration, is an often-cited[1] example of modern extinction. ... The Dodo, shown here in illustration, is an often-cited[1] example of modern extinction. ...

Threatened

Critically Endangered
Endangered
Vulnerable
Threatened
. ... The Siberian Tiger, a subspecies of tiger. ... This list is incomplete; you can help by expanding it. ... Threatened species refers to animal and plant species under a serious, but perhaps not imminent, threat of extinction. ...

Lower risk

Conservation Dependent
Near Threatened
Least Concern
Domesticated
Conservation Dependent (LR/cd) was an IUCN category assigned to species or lower taxa which were dependent on conservation efforts to prevent the taxon becoming threatened with extinction. ... Near Threatened (NT) is an conservation status assigned to species or lower taxa which may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status. ... Dogs and sheep were among the first animals to be domesticated. ...

See also

World Conservation Union
IUCN Red List
The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ... The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ...

Least Concern (LC) is an IUCN category assigned to extant species or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, nor Near Threatened, nor (prior to 2001) Conservation Dependent. Many common species such as the Rock Pigeon, Common Juniper, the Snail Kite, the Sacred Kingfisher, and humans are assigned the Least Concern category. The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ... Threatened species refers to animal and plant species under a serious, but perhaps not imminent, threat of extinction. ... Near Threatened (NT) is an conservation status assigned to species or lower taxa which may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status. ... Conservation Dependent (LR/cd) was an IUCN category assigned to species or lower taxa which were dependent on conservation efforts to prevent the taxon becoming threatened with extinction. ... Binomial name Columba livia Gmelin, 1789 The Rock Pigeon (Columba livia), is a member of the bird family Columbidae, doves and pigeons. ... Binomial name Juniperus communis L. Juniperus communis, the Common Juniper, is a shrub or small tree, very variable and often a low spreading shrub, but occasionally reaching 10 m tall. ... Binomial name Rostrhamus sociabilis (Vieillot, 1817) The Snail Kite, Rostrhamus sociabilis, is a bird of prey in the family Accipitridae, which also includes the eagles, hawks and Old World vultures. ... Binomial name Todirhamphus sanctus (Linnaeus, 1766) The Sacred Kingfisher (Todirhamphus sanctus) is a tree kingfisher found in the mangroves, eucalypt forests, melaleuca forests, woodlands and paperbark forests of Australia. ... Human beings are defined variously in biological, spiritual, and cultural terms, or in combinations thereof. ...


Species cannot be assigned the Least Concern category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status.


Since 2001 the category has had the abbrevriation "LC", following the IUCN 2001 Categories & Criteria (version 3.1) [1]. However, around 20% of Least Concern taxa (3261 of 15636) in the IUCN database use the code "LR/lc", which indicates they have not been re-evaluated since 2000. Prior to 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or (lc).


While "Least Concern" is not considered a red listed category by the IUCN, the 2006 Red List still assigns the category to 15636 taxa. The number of animal species listed in this category totals 14033 (which includes one novel species, Moss Frogs [2]). There are also 101 animal subspecies listed and 1500 plant taxa (1410 species, 55 subspecies, and 35 varieties). There are also two animal subpopulations listed: the Australasian and Southern African subpopulations of Spiny Dogfish. No fungi or protista have the classification, though only four species in those kingdoms have been evaluated by the IUCN. Humans qualify for this category. The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... Sub-families Buergeriinae Rhacophorinae Moss Frogs are the members of the Rhacophoridae family; these frogs are found in tropical areas of Asia and Africa, including Japan and Madagascar (where they represent the largest frog group). ... Binomial name Squalus acanthias Linnaeus, 1758 The spiny dogfish or piked dogfish, Squalus acanthias, is one of the best known of the dogfish, members of the family Squalidae in the order Squaliformes. ... Divisions Chytridiomycota Zygomycota Ascomycota Basidiomycota The Fungi (singular: fungus) are a large group of organisms ranked as a kingdom within the Domain Eukaryota. ... Typical phyla Rhodophyta (red algae) Chromista Heterokontophyta (heterokonts) Haptophyta Cryptophyta (cryptomonads) Alveolates Pyrrhophyta (dinoflagellates) Apicomplexa Ciliophora (ciliates) Excavates Euglenozoa Percolozoa Metamonada Rhizaria Radiolaria Foraminifera Cercozoa Amoebozoa Choanozoa Many others; classification varies The Kingdom Protista or Protoctista is one of the commonly recognized biological kingdoms, including all the eukaryotes except for... Trinomial name Homo sapiens sapiens Linnaeus, 1758 Humans, or human beings, are bipedal primates belonging to the mammalian species Homo sapiens (Latin: wise man or knowing man) in the family Hominidae (the great apes). ...


Least Concern does not always mean that species are not at risk. There are declining species that are evaluated as Least Concern.


Similar classifications

  • Canada's COSEWIC designates Wildlife Species as Not At Risk (NAR) when they have been evaluated to be not at risk of extinction given the current circumstances.
  • The WWF uses "relatively stable/relatively intact" (RS) as the least concern status for ecoregions.

Many category or ranking systems simply do not list Least Concern species. For example Australia's EPBC Act does have a category for "not at risk" species, although such species may be found amongst the lists of "unsuccessful nominations" or "removed" (delisted) fauna and flora. There are, however, other reasons species may be found on these lists, such as taxonomic changes. The US Endangered Species Act likewise does not list species which are not at risk. An Evolutionary Significant Unit (ESU) is a group that is considered distinct for purposes of conservation under the Endangered Species Act. ... The NatureServe conservation status system was developed by NatureServe, The Nature Conservancy (TNC) and the Natural Heritage Network as a ranking of the relative imperilment of species on global, national and/or regional levels. ... The World Wide Fund for Nature (WWF) is an international non-governmental organization for the conservation, research and restoration of the natural environment, formerly named the World Wildlife Fund, which remains its official name in the United States and Canada. ... An ecoregion, sometimes called a bioregion, is a relatively large area of land or water that contains a geographically distinct assemblage of natural communities. ... The Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) is an Act of the Parliament of Australia that provides a framework for protection of the Australian environment, including its biodiversity and its natural and culturally significant places. ... [[Image:{{npov}} {{expert-subject|Law}} The Endangered Species Act (, et seq. ...


References

  1. ^ 2001 Categories & Criteria (version 3.1). The IUCN Red List of Threathened Species. Retrieved on 2006-12-19.
  2. ^ Philautus sp. nov. 'Kalpatta'. The IUCN Red List of Threathened Species. Retrieved on 2006-12-19.

 
 

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