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Abundance distributions imply elevated complexity of post-Paleozoic marine ecosystems.
Science. 2006 Nov 24; 314(5803):1289-92.Sci

Abstract

Likelihood analyses of 1176 fossil assemblages of marine organisms from Phanerozoic (i.e., Cambrian to Recent) assemblages indicate a shift in typical relative-abundance distributions after the Paleozoic. Ecological theory associated with these abundance distributions implies that complex ecosystems are far more common among Meso-Cenozoic assemblages than among the Paleozoic assemblages that preceded them. This transition coincides not with any major change in the way fossils are preserved or collected but with a shift from communities dominated by sessile epifaunal suspension feeders to communities with elevated diversities of mobile and infaunal taxa. This suggests that the end-Permian extinction permanently altered prevailing marine ecosystem structure and precipitated high levels of ecological complexity and alpha diversity in the Meso-Cenozoic.

Authors+Show Affiliations

Department of Geology, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, IL 60605, USA. pwagner@fmnh.orgNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

17124319

Citation

Wagner, Peter J., et al. "Abundance Distributions Imply Elevated Complexity of post-Paleozoic Marine Ecosystems." Science (New York, N.Y.), vol. 314, no. 5803, 2006, pp. 1289-92.
Wagner PJ, Kosnik MA, Lidgard S. Abundance distributions imply elevated complexity of post-Paleozoic marine ecosystems. Science. 2006;314(5803):1289-92.
Wagner, P. J., Kosnik, M. A., & Lidgard, S. (2006). Abundance distributions imply elevated complexity of post-Paleozoic marine ecosystems. Science (New York, N.Y.), 314(5803), 1289-92.
Wagner PJ, Kosnik MA, Lidgard S. Abundance Distributions Imply Elevated Complexity of post-Paleozoic Marine Ecosystems. Science. 2006 Nov 24;314(5803):1289-92. PubMed PMID: 17124319.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Abundance distributions imply elevated complexity of post-Paleozoic marine ecosystems. AU - Wagner,Peter J, AU - Kosnik,Matthew A, AU - Lidgard,Scott, PY - 2006/11/25/pubmed PY - 2006/12/9/medline PY - 2006/11/25/entrez SP - 1289 EP - 92 JF - Science (New York, N.Y.) JO - Science VL - 314 IS - 5803 N2 - Likelihood analyses of 1176 fossil assemblages of marine organisms from Phanerozoic (i.e., Cambrian to Recent) assemblages indicate a shift in typical relative-abundance distributions after the Paleozoic. Ecological theory associated with these abundance distributions implies that complex ecosystems are far more common among Meso-Cenozoic assemblages than among the Paleozoic assemblages that preceded them. This transition coincides not with any major change in the way fossils are preserved or collected but with a shift from communities dominated by sessile epifaunal suspension feeders to communities with elevated diversities of mobile and infaunal taxa. This suggests that the end-Permian extinction permanently altered prevailing marine ecosystem structure and precipitated high levels of ecological complexity and alpha diversity in the Meso-Cenozoic. SN - 1095-9203 UR - https://www.unboundmedicine.com/medline/citation/17124319/Abundance_distributions_imply_elevated_complexity_of_post_Paleozoic_marine_ecosystems_ L2 - http://www.sciencemag.org/cgi/pmidlookup?view=long&pmid=17124319 DB - PRIME DP - Unbound Medicine ER -