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Science. 2011 Nov 25;334(6059):1121-4. doi: 10.1126/science.1210695.

Phanerozoic Earth system evolution and marine biodiversity.

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  • 1Department of Earth Science, Centre for Geobiology, University of Bergen, All├ęgaten 41, Bergen, Norway. bjarte.hannisdal@geo.uib.no

Abstract

The Phanerozoic fossil record of marine animal diversity covaries with the amount of marine sedimentary rock. The extent to which this covariation reflects a geologically controlled sampling bias remains unknown. We show that Phanerozoic records of seawater chemistry and continental flooding contain information on the diversity of marine animals that is independent of sedimentary rock quantity and sampling. Interrelationships among variables suggest long-term interactions among continental flooding, sulfur and carbon cycling, and macroevolution. Thus, mutual responses to interacting Earth systems, not sampling biases, explain much of the observed covariation between Phanerozoic patterns of sedimentation and fossil biodiversity. Linkages between biodiversity and environmental records likely reflect complex biotic responses to changing ocean redox conditions and long-term sea-level fluctuations driven by plate tectonics.

PMID:
22116884
[PubMed - indexed for MEDLINE]
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