Out of the tropics: Evolutionary dynamics of the latitudinal diversity gradient

被引:653
作者
Jablonski, David
Roy, Kaustuv
Valentine, James W.
机构
[1] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA
[2] Univ Calif San Diego, Sect Ecol Behav & Evolut, La Jolla, CA 92093 USA
[3] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
关键词
D O I
10.1126/science.1130880
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The evolutionary dynamics underlying the latitudinal gradient in biodiversity have been controversial for over a century. Using a spatially explicit approach that incorporates not only origination and extinction but immigration, a global analysis of genera and subgenera of marine bivalves over the past 11 million years supports an "out of the tropics'' model, in which taxa preferentially originate in the tropics and expand toward the poles without losing their tropical presence. The tropics are thus both a cradle and a museum of biodversity, contrary to the conceptual dichotomy dominant since 1974; a tropical diversity crisis would thus have profound evolutionary effects at all latitudes.
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页码:102 / 106
页数:5
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