By Craig Hilton-Taylor
Release of the 2000 purple checklist is a massive 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 pink record combines new assessments‹including all chook 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 courses. the combo of animals and vegetation right into a unmarried record containing exams of greater than 18,000 taxa (11,000 of that are threatened species) and the flow in the direction of more suitable documentation of every species at the record signifies that a hard-copy model of the crimson record may run to numerous volumes. This, mixed with the truth that the crimson checklist should be up to date every year, ended in the choice to unlock the purple checklist in digital layout, through the area vast net and as a CD-ROM.
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Additional resources for 2000 IUCN red list of threatened species
As with many of the threatened vertebrates, the conifers are an ancient lineage indicating that perhaps non-random extinction is also happening in the plant Kingdom. A 13 Red List 2000 06 September 2000 16:14:11 Color profile: Generic CMYK printer profile Composite Default screen 2000 IUCN Red List of Threatened Species Table 4. Class* Status Category Summary by Major Taxonomic Group (Plants) EX EW Subtotal CR EN VU Subtotal LR/cd LR/nt DD Total Bryopsida 2 0 2 10 15 11 36 0 0 0 38 Anthocerotopsida 0 0 0 0 1 1 2 0 0 0 2 Marchantiopsida 1 0 1 12 16 14 42 0 0 0 43 Coniferopsida 0 1 1 17 40 83 140 24 52 33 250 Ginkgoopsida 0 0 0 0 1 0 1 0 0 0 1 Magnoliopsida 69 14 83 896 1110 3093 5099 203 610 298 6293 1 2 3 79 83 129 291 17 45 39 395 73 17 90 1014 1266 3331 5611 244 707 370 7022 Liliopsida Subtotal *Bryopsida (mosses), Anthocerotopsida (hornworts), Marchantiopsida (liverworts), Coniferopsida (conifers), Ginkgoopsida (ginkgo), Magnoliopsida (dicotyledons), Liliopsida (monocotyledons).
The twenty countries with the largest numbers of threatened bird species ranked from the highest to the lowest. Percentage of birds threatened 0–2 2–3 3–7 7–42 no data Figure 3b. The countries with the highest percentage of threatened bird relative to the total number of breeding birds recorded for each country (breeding bird totals from WCMC 2000). holds almost 75% of all threatened birds (BirdLife International 2000). This allows conservation planners to target resources in those areas where the extinction risk to birds, and therefore often the threat to the wider environment, is greatest.
With small sample sizes also pose statistical problems as they have very few • Countries discrete values and the data may not be usable for analyses that require the dependent variable to be continuous. Although the usefulness of measuring the number and proportion of threatened species in a country is limited in statistical analyses, when combined they can provide a useful indication of high diversity areas that have disproportionately more threatened species. This section focuses primarily on mammals and birds, as they are the only two groups to have been comprehensively assessed.
2000 IUCN red list of threatened species by Craig Hilton-Taylor