2000 IUCN red list of threatened species by Craig Hilton-Taylor

By Craig Hilton-Taylor

Release of the 2000 pink checklist is an enormous landmark for IUCN. it's the first time that listings of animals and vegetation were mixed and the 1st time that the crimson record has been produced on CD-ROM. The 2000 purple record combines new assessments‹including all poultry species, many antelope and bat species, such a lot primates and sharks, all Asian freshwater turtles, extra molluscs, and lots of others‹with these from prior guides. the mix of animals and vegetation right into a unmarried checklist containing checks of greater than 18,000 taxa (11,000 of that are threatened species) and the flow in the direction of stronger documentation of every species at the checklist implies that a hard-copy model of the crimson record may run to a number of volumes. This, mixed with the truth that the crimson checklist should be up-to-date every year, resulted in the choice to unencumber the pink record in digital layout, through the area huge net and as a CD-ROM.

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2000 IUCN red list of threatened species

Free up of the 2000 purple checklist is a big landmark for IUCN. it's the first time that listings of animals and crops were mixed and the 1st time that the crimson checklist has been produced on CD-ROM. The 2000 purple checklist combines new assessments‹including all poultry species, many antelope and bat species, such a lot primates and sharks, all Asian freshwater turtles, extra molluscs, and plenty of others‹with these from earlier courses.

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It is frequently stated that species are being lost every day, particularly invertebrates and other small cryptic organisms, which have not as yet been discovered or named. Even if they have been discovered and named, they are often too small to be noticed without special sampling procedures, or they occur in remote areas where 31 Red List 2000 06 September 2000 16:14:56 Color profile: Generic CMYK printer profile Composite Default screen 2000 IUCN Red List of Threatened Species regular monitoring is impossible.

In each quartile there are approximately fifty countries. would be expected, and the 25 countries for which the number of threatened species is most in excess of what is expected are shown in Table 5. Nineteen of these countries are island states (including Australia), which provides support for the biogeographical analysis of Mace and Balmford (2000) which indicated that species restricted to islands, wherever they are, have a higher level of threat than continental species in the same biogeographic region, and that island species are generally more vulnerable to extinction.

The bird analyses further show that increased extinction risk is independently associated with increases in body size and low fecundity rates and it is suggested that the evolution of low fecundity many millions of years ago predisposed certain lineage’s to extinction (Bennett and Owens 1997). Trends in reptiles, amphibians and fishes There has not been a major emphasis on updating the information on reptiles, amphibians and fish for the 2000 Red List, but these species will receive priority attention from the SSC for assessment over the next three years.

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