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

By Jonathan Baillie

This research of the knowledge inside the 2004 IUCN crimson checklist of Threatened Species offers an perception into the prestige and traits of the world’s species of vegetation and animals, with a spotlight on these at maximum chance 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 record Index; areas of the area the place threatened species are typically stumbled on; the threats which are using species in the direction of extinction; the social and fiscal context during which extinctions are happening; and the conservation responses which are on hand. This intensive research is the 1st significant booklet via the crimson checklist Consortium, a gaggle of agencies comprising IUCN (in specific the Species Survival Commission), BirdLife overseas, Conservation foreign (in specific the heart for utilized Biodiversity Science), and NatureServe.

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

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In total, assessments for 40,187 taxa are included on the 2004 IUCN Red List of Threatened SpeciesTM thus enhancing the reputation of the IUCN Red List as the most comprehensive assessment of the status of the world’s ‘species’. The 15,589 species threatened with extinction, although only just over one per cent of the world's described species, includes 12% of all bird species, 23% of all mammal species, 32% of all amphibian species and 34% of all gymnosperms (mainly conifers and cycads). 1). 2 How Little is Known: the Number of Described Species and the Number Evaluated Although the number of species assessed has increased substantially in recent updates of the IUCN Red List, the conservation status of most of the world’s species remains poorly known.

The species is fished commercially and recreationally, with much of the catch coming from spawning aggregations. Early days in the global assessment of chondrichthyan fishes (sharks, rays and chimaeras) lists 18% as threatened The slow life histories and low population growth rates of sharks, skates, rays and chimaeras limits their capacity to withstand over-fishing and habitat destruction (Fowler et al. in press). 10 on the Whiskery Shark). Restricted-range species occupying heavily fished areas, such as sawfishes and deep-sea dogfishes, typify some of the more seriously threatened species.

The members of this large genus tend to have very small ranges, especially in India and Sri Lanka, where they are easily impacted by habitat loss. Many species in the Plethodontidae also tend to have very small ranges. The Mexican and Central American members of this family are particularly threatened because of habitat loss. 10 The Maud Island Frog Leiopelma pakeka (Vulnerable) is one of four members of the primitive New Zealand frog family, Leiopelmatidae, all of which are threatened. This species is confined to a 16 ha forest remnant on Maud Island, although an introduced population was established on Motuara Island in 1997.

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