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Going up, going down, gone? |
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The 2007 update to the Red List contains 381 reassessments from which we can see if a specie's status has improved or declined. In the 2007 IUCN Red List:
- 76 reassessed species declined in status.
- 74 reassessed species improved in status.
- One plant species, the Woolly-stalked Begonia Begonia eiromischa, has been declared Extinct.
- 231 reassessed species did not change category.
Below you will find a few examples to highlight the rise, fall and disappearance of just a few of these species.
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Speke's Gazelle (Gazella spekei)
2006: Vulnerable
2007: Endangered
Speke’s Gazelle was formerly widespread across the open barren grasslands of Somalia but its numbers have been reduced greatly by hunting, drought and overgrazing of its habitat by domestic livestock. There are no functioning protected areas or active field conservation programmes within its range. Populations of Speke’s Gazelle are maintained in captivity. |
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Baiji or Yangtze River Dolphin (Lipotes vexillifer)
2006: Critically Endangered
2007: Critically Endangered (Possibly Extinct)
The baiji is probably the most endangered cetacean (whales, dolphins and porpoises) in the world, with the last confirmed sighting having occurred in 2002. Reasons for its decline include entanglement in fishing gear, electric shocking for fish, pollution and disturbance from agriculture, development such as dam building and increased boat traffic. Read more
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Mauritius Parakeet (Psittacula eques)
2006: Critically Endangered,
2007: Endangered
The Mauritius Parakeet is presently restricted to south west Mauritius within the Black River Gorges National Park. Its change in status comes after a steady and prolonged increase in the wild population as a result of intensive recovery management. Successful conservation measures have been taken with captive breeding programmes, nest site enhancement and provision of artificial nest cavities. Read more
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Gharial or Indian crocodile (Gavialis gangeticus)
2006: Endangered
2007: Critically Endangered
After decades of conservation activity, the Red List assessment reveals that there are just 182 breeding Gharial adults left in the wild in Nepal and India. Its decline can be attibuted to has been excessive irreversible loss of riverine habitat. Net fishing is also a major threat to the population when Gharials become entangled in gill nets and drown. Read more
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Woolly-stalked Begonia (Begonia eiromischa)
2007: Extinct
The Woolly-stalked Begonia was known only from collections made in 1886 and 1898 in just one locality in Pulau Betong, Penang Island, Malaysia. Its habitat has been found to have been cleared for farmsteads in the 1980s. Extensive searches of nearby forests have failed to reveal any specimens in the last 100 years.
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Egyptian Vulture (Neophron percnopterus)
2006: Least Concern
2007: Endangered
This long-lived species has changed status from Least Concern to Endangered following a very recent and extremely rapid population decline in India (presumably resulting from poisoning by the veterinary drug Diclofenac) combined with severe long term declines in Europe and West Africa, plus ongoing declines through much of the rest of its African range. Fewer than 3,000 are estimated to remain. Read more
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Western Gorilla (Gorilla gorilla)
2006: Endangered
2007: Critically Endangered
This charismatic species has suffered a population reduction of more than 80% over three generations due to exceptionally high levels of hunting and disease-induced mortality (over 90% in some large remote areas) Most protected areas have serious poaching problems and almost half of the habitat under protected status has been hard hit by Ebola. Read more
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Red-breasted Goose (Branta ruficollis)
2006: Vulnerable
2007: Endangered
This species has a moderate population size which appears to have declined rapidly over a short time period. The reasons for this decline are largely unknown. Possible causes for the decline are intensification of agriculture, hunting, industrial developments at breeding sites and the use of rodenticides in the wintering grounds.
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