HOW MUCH DO WE KNOW ABOUT THE CURRENT EXTINCTION RATE

被引:91
作者
SMITH, FDM [1 ]
MAY, RM [1 ]
PELLEW, R [1 ]
JOHNSON, TH [1 ]
WALTER, KR [1 ]
机构
[1] WORLD CONSERVAT MONITORING CTR,CAMBRIDGE CB3 0DL,ENGLAND
关键词
D O I
10.1016/0169-5347(93)90223-C
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Since about 1600, 486 animal species have been recorded extinct. This represents about 0.04% of all animal species so far described. In the same period, 600 plant species are known to have disappeared, about 0.25% of the total. These figures are much smaller than those of the Permian/Triassic and Cretaceous/Tertiary mass extinctions. One might therefore conclude that at present life on earth is at comparatively little risk of extinction. However, there is a growing body of data to show that the converse is true.
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页码:375 / 378
页数:4
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