| Community dynamics of Pleistocene coral reefs during alternative climatic regimes. | |
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MedLine Citation:
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PMID: 20380208 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Reef ecosystems built during successive periods of Pleistocene sea level rise have shown remarkable persistence in coral community structure, but little is known of the ecological characteristics of reef communities during periods of low sea stands or sea level falls. We sampled the relative species abundance of coral, benthic foraminifera, and calcareous red algae communities from eight submerged coral reefs in the Huon Gulf, Papua New Guinea, which formed during successive sea level fall and lowstand periods over the past approximately kyr. We found that dissimilarity in coral species composition increased significantly with increasing time between reef-building events. However, neither coral diversity nor the taxonomic composition of benthic foraminifera and calcareous red algae assemblages varied significantly over time. The taxonomic composition of coral communities from lowstand reefs was significantly different from that of highstand reefs previously reported from the nearby Huon Peninsula. We interpret the community composition and temporal dynamics of lowstand reefs as a result of shifting energy regimes in the Huon Gulf, and differences between low and highstand reefs as a result of differences in the interaction between biotic and environmental factors between the Huon Gulf and Huon Peninsula. Regardless of the exact processes driving these trends, our study represents the first glimpse into the ecological dynamics of coral reefs during low sea level stands when climatic conditions for reef growth were much different and less optimal than during previously studied highstand periods. |
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Authors:
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Danika Tager; Jody M Webster; Donald C Potts; Willem Renema; Juan C Braga; John M Pandolfi |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Ecology Volume: 91 ISSN: 0012-9658 ISO Abbreviation: Ecology Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-04-12 Completed Date: 2010-04-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043541 Medline TA: Ecology Country: United States |
Other Details:
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Languages: eng Pagination: 191-200 Citation Subset: IM |
Affiliation:
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School of Integrative Biology, University of Queensland, St. Lucia, Queensland 4072, Australia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Anthozoa / physiology* Climate* Ecosystem* Fossils* Geologic Sediments Oceans and Seas Population Dynamics* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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