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The Info List - Vulnerable Species


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A vulnerable species is one which has been categorized by the International Union for Conservation of Nature
International Union for Conservation of Nature
as likely to become endangered unless the circumstances that are threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity, an example being the military macaw. There are currently 5196 animals and 6789 plants classified as vulnerable, compared with 1998 levels of 2815 and 3222, respectively.[1] Practices such as Cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically.

Contents

1 Criteria 2 See also 3 Notes and references 4 External links

Criteria[edit] The International Union for Conservation of Nature
International Union for Conservation of Nature
uses several criteria to enter species in this category. A taxon is Vulnerable when it is not critically endangered or Endangered but is facing a high risk of extinction in the wild in the medium-term future, as defined by any of the following criteria (A to E): A) Population reduction in the form of either of the following:

An observed, estimated, inferred or suspected population size reduction of ≥ 50% over the last 10 years or three generations, whichever is the longer, provided the causes of the reduction are clearly reversible AND understood AND ceased.[2] This measurement is based on (and specifying) any of the following:

direct observation an index of abundance appropriate for the taxon a decline in area of occupancy, extent of occurrence or quality of habitat actual or potential levels of exploitation the effects of introduced taxa, hybridisation, pathogens, pollutants, competitors or parasites.

A reduction of at least 20%, projected or suspected to be met within the next ten years or three generations, whichever is the longer, based on (and specifying) any of (2), (3), (4) or (5) above.

B) Extent of occurrence estimated to be less than 20,000 km2 or area of occupancy estimated to be less than 2000 km2, and estimates indicating any two of the following:

Severely fragmented or known to exist at no more than ten locations. Continuing decline, inferred, observed or projected, in any of the following:

extent of occurrence area of occupancy area, extent or quality of habitat number of locations or subpopulations number of mature individuals

Extreme fluctuations in any of the following:

extent of occurrence area of occupancy number of locations or subpopulations number of mature individuals

C) Population estimated to number fewer than 10,000 mature individuals and either:

An estimated continuing decline of at least 10% within 10 years or three generations, whichever is longer, or A continuing decline, observed, projected, or inferred, in numbers of mature individuals and population structure in the form of either:

severely fragmented (i.e. no subpopulation estimated to contain more than 1000 mature individuals) all mature individuals are in a single subpopulation

D) Population very small or restricted in the form of either of the following:

Population estimated to number less than 1000 mature individuals. Population is characterised by an acute restriction in its area of occupancy (typically less than 20 km2)[2] or in the number of locations (typically less than five). Such a taxon would thus be prone to the effects of human activities (or stochastic events whose impact is increased by human activities) within a very short period of time in an unforeseeable future, and is thus capable of becoming Critically Endangered or even Extinct in a very short period.

E) Quantitative analysis showing the probability of extinction in the wild is at least 10% within 100 years. The examples of vulnerable animal species are hyacinth macaw, mountain zebra, gaur, kea, black crowned crane and blue crane See also[edit]

Category: IUCN Red List
IUCN Red List
vulnerable species for an alphabetical list Cryoconservation of animal genetic resources List of vulnerable amphibians List of vulnerable arthropods List of vulnerable birds List of vulnerable fishes List of vulnerable insects List of vulnerable invertebrates List of vulnerable mammals List of vulnerable molluscs List of vulnerable reptiles

Notes and references[edit]

^ IUCN
IUCN
(2012). " IUCN Red List
IUCN Red List
version 2012.2: Table 2: Changes in numbers of species in the threatened categories (CR, EX, VU) from 1996 to 2012 ( IUCN Red List
IUCN Red List
version 2012.2) for the major taxonomic groups on the Red List" (PDF). Retrieved 2012-12-31.  ^ a b http://www.iucnredlist.org/static/categories_criteria_3_1#critical

External links[edit]

List of Vulnerable species
Vulnerable species
as identified by the IUCN Red List
IUCN Red List
of Threatened Species

v t e

Threatened species

Template:  Threatened species
Threatened species
by region

IUCN
IUCN
Red List

Categories1

Extinct

Extinct (EX) Extinct in the Wild (EW)

Threatened

Critically Endangered (CR) Endangered (EN) Vulnerable (VU)

Lower risk

Near Threatened (NT) Least Concern (LC) Lower Risk (LR) Conservation Dependent (LR/cd)

Not fully assessed

Data Deficient (DD) Not Evaluated (NE)

Species

Lists

Extinct Extinct in the Wild Critically Endangered Endangered Vulnerable Near Threatened Least Concern Data Deficient

WP categories

Extinct Extinct in the Wild Critically Endangered Endangered Vulnerable Near Threatened Least Concern Data Deficient

CITES

Appendix I Appendix II Appendix III

By taxa

Endangered arthropods / spiders Threatened Banksia / rays / sharks / Fungi / Chromista The World's 25 Most Endangered Primates The world's 100 most threatened species

Conservation

Biodiversity action plan Biodiversity threats Conservation biology CITES ARKive Bird conservation Conservation status Conservation-reliant species Ecoregion conservation status Habitat destruction Latent extinction risk Rare species Vulnerability and susceptibility

1 Pre-2001 categories and subcategories shown in italics.

v t e

Threatened species
Threatened species
by region

By region

Blue-listed Environmental Vulnerability Index Regional Red List

Australasia

Environment Protection and Biodiversity Conservation Act 1999 ROTAP Threatened Species
Species
Protection Act 1995 Threatened ecological community Trade in Endangered Species
Species
Act 1989

Canada

Species
Species
at Risk Act Committee on the Status of Endangered Wildlife in Canada

Europe

European Endangered Species
Species
Programme Funds for Endangered Parrots

South Africa

Endangered Wildlife Trust

United States

Distinct population segment Endangered Species
Species
Act of 1973 Endangered Species
Species
Act Amendments of 1978 Endangered species
Endangered species
recovery plan Endangered Wolf Center National Wildlife Refuge NatureServe conservation status The Nature Conservancy

Lists

Asia

List of endangered and protected species of China Endangered mammals of India List of endangered animals in India List of endangered species in Pakistan List of threatened species of the Philippines List of endangered species in Vietnam

Europe

Threatened mammals of Europe Endangered plants of Europe List of United Kingdom Biodiversity Action Plan species List of extinct and endangered species of Italy List of extinct and endangered species of Lithuania

North America

List of endangered plants in North America List of endangered species in North America Endangered mammals and birds of the United States List of threatened mammals of the United States List of threatened birds of the United States List of threatened reptiles and amphibians of the United States

Elsewhere

Threatened fauna of Australia List of threatened flora of Australia List of endangered flora of Brazil List of threatened mammals of Brazil List of threatened birds of Brazil

Ecology portal Extinct and endange

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