Organic carbon fluxes and ecological recovery from the Cretaceous-Tertiary mass extinction

被引:206
作者
D'Hondt, S [1 ]
Donaghay, P
Zachos, JC
Luttenberg, D
Lindinger, M
机构
[1] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA
[2] Univ Calif Santa Cruz, Dept Earth Sci, Santa Cruz, CA 95064 USA
关键词
D O I
10.1126/science.282.5387.276
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
Differences between the carbon isotopic values of carbonates secreted by planktic and benthic organisms did not recover to stable preextinction Levels for more than 3 million years after the Cretaceous-Tertiary mass extinction. These decreased differences may have resulted from a smaller proportion of marine biological production sinking to deep water in the postextinction ocean. Under this hypothesis, marine production may have recovered shortly after the mass extinction, but the structure of the open-ocean ecosystem did not fully recover for more than 3 million years.
引用
收藏
页码:276 / 279
页数:4
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