Least Concern (LC) is an IUCN The International Union for Conservation of Nature is an international organization dedicated to natural resource conservation. It helps the world find pragmatic solutions to our most pressing environment and development challenges 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 Threatened species are any species which are vulnerable to extinction in the near future. World Conservation Union (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories: vulnerable, endangered, and critically endangered, depending on the degree to which, Near Threatened Near Threatened is a conservation status assigned to species or lower taxa that may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status. As such the IUCN notes the importance of re-evaluating Near Threatened taxa often or at appropriate intervals, or (prior to 2001) Conservation Dependent Conservation Dependent was an IUCN category assigned to species or lower taxa which were dependent on conservation efforts to prevent the taxon becoming threatened with extinction. Such taxa must be the focus of a continuing taxon-specific or habitat-specific conservation program targeted towards the taxon in question, the cessation of which would. Many common species such as the Rock Pigeon, Common Juniper Juniperus communis, the Common Juniper, is a species in the genus Juniperus, in the family Cupressaceae. It has the largest range of any woody plant, throughout the cool temperate Northern Hemisphere from the Arctic south in mountains to around 30°N latitude in North America, Europe and Asia, Human Humans, known taxonomically as Homo sapiens , are the only living species in the Homo genus of bipedal primates in Hominidae, the great ape family. However, in some cases "human" is used to refer to any member of the genus Homo, Snail Kite, Sacred Kingfisher and House Mouse The house mouse is a small rodent, a mouse, one of the most numerous species of the genus Mus are assigned the Least Concern category.
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 acronym "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 The IUCN Red List of Threatened Species , founded in 1948, is the world's most comprehensive inventory of the global conservation status of plant and animal species. The International Union for the Conservation of Nature and Natural Resources (IUCN) is the world's main authority on the conservation status of species. A series of Regional Red Lists 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 A fungus ) is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi (pronounced /ˈfʌndʒaɪ/ or /ˈfʌŋɡaɪ/), that is separate from plants, animals and bacteria. One major difference is that fungal or protista Protists are a diverse group of eukaryotic microorganisms. which include mostly unicellular organisms that do not fit into the other kingdoms. Historically, protists were treated as the kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms, but this group is contested in modern taxonomy. Instead, it have the classification, though only four species in those kingdoms have been evaluated by the IUCN. Humans Humans, known taxonomically as Homo sapiens , are the only living species in the Homo genus of bipedal primates in Hominidae, the great ape family. However, in some cases "human" is used to refer to any member of the genus Homo qualify for this category, and in 2008 were formally assessed[3] as such by the IUCN.
Similar classifications
- The COSEWIC designates Wildlife Species An Evolutionarily Significant Unit (often lowercased where used without abbreviation, as "evolutionarily significant unit") is a population of organisms that is considered distinct for purposes of conservation. Delineating ESUs is important when considering conservation action as Not At Risk (NAR) when they have been evaluated to be not at risk of extinction given the current circumstances.
- The NatureServe conservation status uses the ranking of Secure (G5) for "demonstrably widespread, abundant, and secure" species which have a stable population
- The WWF The World Wide Fund for Nature is an international non-governmental organization working on issues regarding the conservation, research and restoration of the environment, formerly named the World Wildlife Fund, which remains its official name in the United States and Canada. It is the world's largest independent conservation organization with uses "relatively stable/relatively intact" (RS) as the least concern status for ecoregions An ecoregion , sometimes called a bioregion, is an ecologically and geographically defined area that is smaller than an ecozone and larger than an ecosystem. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flora, fauna.
Many category or ranking systems simply do not list Least Concern species. For example Australia For at least 40,000 years before European settlement in the late 18th century, Australia was inhabited by indigenous Australians, who belonged to one or more of the roughly 250 language groups. After sporadic visits by fishermen from the immediate north and discovery by Dutch explorers in 1606, Australia's eastern half was claimed by Britain in 177's EPBC Act does not 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 The Endangered Species Act of 1973 is one of the dozens of United States environmental laws passed in the 1970s. As stated in section 2 of the act, it was designed to protect critically imperiled species from extinction as a "consequence of economic growth and development untempered by adequate concern and conservation." likewise does not list species which are not at risk.
See also
- List of least concern species as identified by the IUCN Red List of Threatened Species The IUCN Red List is set upon precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. The aim is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to try to reduce species
References
| This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be and removed. (July 2009) |
- ^ "2001 Categories & Criteria (version 3.1)". The IUCN Red List of Threathened Species. http://www.redlist.org/info/categories_criteria2001. Retrieved 2006-12-19.
- ^ "Philautus sp. nov. 'Kalpatta'". The IUCN Red List of Threathened Species. http://www.redlist.org/search/details.php?species=58913. Retrieved 2006-12-19.
- ^ "IUCN Red List - Homo sapiens". The IUCN Red List of Threathened Species. http://www.iucnredlist.org/apps/redlist/details/136584/0/full. Retrieved 2008-10-12.
Categories: Conservation in Canada | Conservation in the United States | United States federal environmental legislation
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