| The multidimensionality of the niche reveals functional diversity changes in benthic marine biotas across geological time. | |
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MedLine Citation:
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PMID: 21481126 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Ecology Letters (2011) ABSTRACT: Despite growing attention on the influence of functional diversity changes on ecosystem functioning, a palaeoecological perspective on the long-term dynamic of functional diversity, including mass extinction crises, is still lacking. Here, using a novel multidimensional functional framework and comprehensive null-models, we compare the functional structure of Cambrian, Silurian and modern benthic marine biotas. We demonstrate that, after controlling for increases in taxonomic diversity, functional richness increased incrementally between each time interval with benthic taxa filling progressively more functional space, combined with a significant functional dissimilarity between periods. The modern benthic biota functionally overlaps with fossil biotas but some modern taxa, especially large predators, have new trait combinations that may allow more functions to be performed. From a methodological perspective, these results illustrate the benefits of using multidimensional instead of lower dimensional functional frameworks when studying changes in functional diversity over space and time. |
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Authors:
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Sébastien Villéger; Philip M Novack-Gottshall; David Mouillot |
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Publication Detail:
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Type: LETTER Date: 2011-4-12 |
Journal Detail:
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Title: Ecology letters Volume: - ISSN: 1461-0248 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-12 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101121949 Medline TA: Ecol Lett Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Blackwell Publishing Ltd/CNRS. |
Affiliation:
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Laboratoire ECOSYM, UMR 5119 CNRS-UM2-IRD-IFREMER, Place Eugène Bataillon, 34095 Montpellier, France CNRS, UPS, ENFA, UMR5174 EDB (Laboratoire Évolution et Diversité Biologique), 118 route de Narbonne, F-31062 Toulouse, France Université de Toulouse, UMR5174 EDB, F-31062 Toulouse, France Department of Biological Science, Benedictine University, Lisle, IL 60532, USA ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Qld 4811, Australia. |
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