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

By Jonathan Baillie

This research of the knowledge inside the 2004 IUCN purple record of Threatened Species presents an perception into the prestige and developments of the world’s species of crops and animals, with a spotlight on these at maximum hazard of extinction. The ebook 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 hot pink record Index; areas of the area the place threatened species are typically discovered; the threats which are riding species in the direction of extinction; the social and financial context during which extinctions are occurring; and the conservation responses which are to be had. This intensive research is the 1st significant ebook by means of the crimson checklist Consortium, a gaggle of enterprises comprising IUCN (in specific the Species Survival Commission), BirdLife overseas, Conservation overseas (in specific the heart for utilized Biodiversity Science), and NatureServe.

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Extra info 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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Severely threatened species include the Australian endemic species, Harrisson’s Dogfish Centrophorus harrissoni and the Southern Dogfish C. uyato with declines of >99% in two decades due to commercial fishing (Cavanagh et al. 2003; Graham et al. 2001). Deep-sea data collection is challenging, and the SSG is encouraging the precautionary approach to management as a matter of urgency. 19 Damba Mipentina Paretroplus maculatus (Critically Endangered) endemic to Madagascar, has undergone severe declines due to severe fishing pressure, impact of introduced inavsive species, and habitat destruction.

In addition to the taxonomic groups discussed above, the IUCN Red List also includes representatives from two other Kingdoms. 5). 4 and Section 4), and it is likely that the situation is similar for taxonomic groups not yet evaluated. 3 How Many Threatened Animal Species are There? 2 and Appendix 3a). Comparing the numbers of threatened species in the major taxonomic groups reported for the 2000 and 2004 updates of the Red List (see Appendices 3a and 3b), it is clear that the overall number of threatened species has increased in all groups, with the exception of the mammals (see details below).

The Caudata (salamanders and newts) have significantly more threatened species than average, as the species tend to have small ranges and are very sensitive to habitat loss. The average number of threatened species is determined by the Anurans (frogs and toads), by far the largest amphibian group with over 5,000 species. 5b; see Appendix 3h for detailed results). The families with significantly more threatened species than average include: Astylosternidae (Cameroonian stream frogs); Hynobiidae (Asian salamanders); Rhacophoridae (Asian tree frogs); Plethodontidae (lungless salamanders); Bufonidae (true toads); and the Leptodactylidae (Neotropical typical frogs).

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