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

By Craig Hilton-Taylor

Release of the 2000 purple record is a tremendous landmark for IUCN. it's the first time that listings of animals and crops were mixed and the 1st time that the purple checklist has been produced on CD-ROM. The 2000 purple checklist combines new assessments‹including all fowl species, many antelope and bat species, so much primates and sharks, all Asian freshwater turtles, extra molluscs, and plenty of others‹with these from past guides. the combo of animals and crops right into a unmarried record containing exams of greater than 18,000 taxa (11,000 of that are threatened species) and the stream in the direction of greater documentation of every species at the record signifies that a hard-copy model of the crimson record could run to numerous volumes. This, mixed with the truth that the pink checklist could be up to date every year, ended in the choice to liberate the pink checklist in digital structure, through the realm huge internet and as a CD-ROM.

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Extra resources for 2000 IUCN red list of threatened species

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However, given the recent significant changes in primate taxonomy, which have been adopted in the 2000 Red List, this may affect some results slightly. A further problem with the mammal data is that the distributions of many of the cetaceans are not recorded by country, hence these species were excluded from the analysis. The bird data also presented a problem in that the total numbers used were for breeding birds only (WCMC 2000). The numbers of threatened birds recorded per country in the Red List, however, include both breeding and non-breeding species.

Congruency between the top twenty countries with the largest numbers of threatened species of mammals, birds and plants. The USA is the only largely non-tropical country in the top twenty. However, the Red List only includes 168 threatened species for the USA whereas the TNC assessments suggest at least 5,090 flowering plants alone are threatened (Master et al. 2000). Combining the results from the total numbers of threatened mammals, birds and plants provides some indication of the degree of congruence between the different groups (see Figure 6).

Likewise it is very difficult to predict with any certainty how many species, let alone which ones, will become extinct in the next one hundred years. These problems are further illustrated by the occasional rediscovery of species thought to be Extinct. The Vietnamese Warty Pig Sus bucculentus, was described from two skulls in the late 1800s, as the species was not subsequently recorded in any surveys it was treated as possibly extinct in the 1994 IUCN Red List and finally as Extinct in 1996. In 1997, a report was published indicating that the species still existed based on the identification of a partial fresh skull, which was obtained from some hunters (Groves et al.

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