Download A 2004 IUCN Red list of threatened species: A Global Species by Jonathan Baillie PDF

By Jonathan Baillie

This research of the data inside the 2004 IUCN crimson record of Threatened Species offers an perception into the prestige and tendencies of the world’s species of crops and animals, with a spotlight on these at maximum possibility of extinction. The e-book highlights the taxonomic teams and species which are on the maximum threat of extinction; fresh documented extinctions; developments within the prestige of threatened species, together with the recent crimson checklist Index; areas of the realm the place threatened species are usually chanced on; the threats which are using species in the direction of extinction; the social and financial context within which extinctions are occurring; and the conservation responses which are to be had. This extensive research is the 1st significant booklet by means of the crimson record Consortium, a bunch of companies comprising IUCN (in specific the Species Survival Commission), BirdLife foreign, Conservation foreign (in specific the heart for utilized Biodiversity Science), and NatureServe.

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Additional resources for A 2004 IUCN Red list of threatened species: A Global Species Assessment (Occasional Paper of the Iucn Species Survival Commission)

Sample text

There is an additional category – LowerRisk/conservation dependent (LR/cd) that was used in an earlier version of the Red List Categories (IUCN 1994a) but has subsequently been dropped (IUCN 2001). This category was used to indicate species that would be listed as threatened were it not for species-specific conservation programmes. 2), and until such time as these are all re-evaluated, this category will persist as an artefact of the previous classification system. 2a). 1 Mammals, Birds and Amphibians The 1996 IUCN Red List (Baillie and Groombridge 1996) featured complete evaluations for all of the world’s bird and mammal species.

2). The evaluations have tended to focus on particular taxonomic groups that are well known (the crocodilians, turtles, iguanas and tuataras) or on species in the more poorly known groups (lizards and snakes) that are considered to be under threat. Of the species evaluated, 61% are listed as threatened. Two reptile orders have been completely evaluated, namely the Crocodylia (crocodiles, alligators and caimans) and the Rhynchocephalia (tuataras). The Crocodylia have ten (43%) of their 23 described species listed as threatened.

2 The Decline of Turtles The very rapidly deteriorating status of tortoises and freshwater turtles in Southeast Asia has resulted in an increasing number of these species being listed as threatened on the IUCN Red List. Globally, 42% of turtle and tortoise species are threatened. 12 The Anegada Ground Iguana Cyclura pinguis (Critically Endangered) was once distributed over the entire Puerto Rico Bank, but today is confined to the island of Anegada, British Virgin Islands. Vulnerability to predation by humans and their dogs and cats may have resulted in the contraction in range.

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