Estimates of recent and future extinction rates
- Estimates of recent and future extinction rates
-
Estimates of recent and future extinction rates
group number of living species number of extinctions per indicated time period (in years) extinctions per million species
per year
Recent extinctions
birds (described 1800-99) 7,079 39/100 55
mammals 4,300 60/200 70
reptiles 4,700 20/200 21
frogs and toads 4,000 5/25 50
freshwater clams 1,082 21/100 194
Future extinctions*
birds 10,000 1,200/100 1,200
mammals 4,300 650/100 1,512
reptiles 4,700 210/100 447
frogs and toads 4,000 89/100 223
freshwater clams 1,082 120/100 1,109
*Predictions of future extinctions for all species, as published by various authors since about 1980, range between 1,000 and 10,000 extinctions per million species per year.
Principal source: S.L. Pimm et al., "The Future of Biodiversity,"
Science 269:347–350 (1995).
See as table:
* * *
Universalium.
2010.
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