Document Detail

Ecological changes in Miocene mammalian record show impact of prolonged climatic forcing.
MedLine Citation:
PMID:  18711123     Owner:  NLM     Status:  MEDLINE    
Geohistorical records reveal the long-term impacts of climate change on ecosystem structure. A 5-myr record of mammalian faunas from floodplain ecosystems of South Asia shows substantial change in species richness and ecological structure in relation to vegetation change as documented by stable isotopes of C and O from paleosols. Between 8.5 and 6.0 Ma, C(4) savannah replaced C(3) forest and woodland. Isotopic historical trends for 27 mammalian herbivore species, in combination with ecomorphological data from teeth, show three patterns of response. Most forest frugivores and browsers maintained their dietary habits and disappeared. Other herbivores altered their dietary habits to include increasing amounts of C(4) plants and persisted for >1 myr during the vegetation transition. The few lineages that persisted through the vegetation transition show isotopic enrichment of delta(13)C values over time. These results are evidence for long-term climatic forcing of vegetation structure and mammalian ecological diversity at the subcontinental scale.
Catherine Badgley; John C Barry; Michèle E Morgan; Sherry V Nelson; Anna K Behrensmeyer; Thure E Cerling; David Pilbeam
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2008-08-18
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  105     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-08-27     Completed Date:  2008-10-24     Revised Date:  2013-06-05    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  12145-9     Citation Subset:  IM    
Museum of Paleontology and Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA.
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MeSH Terms
Biological Evolution*
Carbon Isotopes
Diet, Vegetarian
Oxygen Isotopes
Paleontology / methods
Plants, Edible*
Reg. No./Substance:
0/Carbon Isotopes; 0/Oxygen Isotopes

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

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