Document Detail

The shifting balance of diversity among major marine animal groups.
MedLine Citation:
PMID:  20813951     Owner:  NLM     Status:  MEDLINE    
The fossil record demonstrates that each major taxonomic group has a consistent net rate of diversification and a limit to its species richness. It has been thought that long-term changes in the dominance of major taxonomic groups can be predicted from these characteristics. However, new analyses show that diversity limits may rise or fall in response to adaptive radiations or extinctions. These changes are idiosyncratic and occur at different times in each taxa. For example, the end-Permian mass extinction permanently reduced the diversity of important, previously dominant groups such as brachiopods and crinoids. The current global crisis may therefore permanently alter the biosphere's taxonomic composition by changing the rules of evolution.
J Alroy
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  329     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-03     Completed Date:  2010-09-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1191-4     Citation Subset:  IM    
Paleobiology Database, University of California, 735 State Street, Santa Barbara, CA 93101, USA.
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MeSH Terms
Adaptation, Biological
Data Interpretation, Statistical
Databases, Factual*
Extinction, Biological
Marine Biology
Models, Biological
Oceans and Seas
Population Dynamics
Statistics as Topic
Comment In:
Science. 2010 Sep 3;329(5996):1156-7   [PMID:  20813942 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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