globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12566
论文题名:
Consistent nutrient storage and supply mediated by diverse fish communities in coral reef ecosystems
作者: Allgeier J.E.; Layman C.A.; Mumby P.J.; Rosemond A.D.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:8
起始页码: 2459
结束页码: 2472
语种: 英语
英文关键词: Coastal ecosystems ; Consumer-mediated nutrient supply ; Eutrophication ; Fish ; Food web ; Mangroves ; Nitrogen ; Phosphorus ; Redfield ratio ; Seagrass beds
Scopus关键词: coral reef ; eutrophication ; fish ; food web ; mangrove ; nitrogen ; nutrient dynamics ; phosphorus ; Redfield ratio ; seagrass ; Lesser Antilles ; Anthozoa ; Rhizophoraceae ; nitrogen ; phosphorus ; animal ; Bayes theorem ; coral reef ; ecosystem ; energy metabolism ; fish ; statistical model ; theoretical model ; Animals ; Bayes Theorem ; Coral Reefs ; Ecosystem ; Energy Metabolism ; Fishes ; Linear Models ; Models, Theoretical ; Nitrogen ; Phosphorus
英文摘要: Corals thrive in low nutrient environments and the conservation of these globally imperiled ecosystems is largely dependent on mitigating the effects of anthropogenic nutrient enrichment. However, to better understand the implications of anthropogenic nutrients requires a heightened understanding of baseline nutrient dynamics within these ecosystems. Here, we provide a novel perspective on coral reef nutrient dynamics by examining the role of fish communities in the supply and storage of nitrogen (N) and phosphorus (P). We quantified fish-mediated nutrient storage and supply for 144 species and modeled these data onto 172 fish communities (71 729 individual fish), in four types of coral reefs, as well as seagrass and mangrove ecosystems, throughout the Northern Antilles. Fish communities supplied and stored large quantities of nutrients, with rates varying among ecosystem types. The size structure and diversity of the fish communities best predicted N and P supply and storage and N : P supply, suggesting that alterations to fish communities (e.g., overfishing) will have important implications for nutrient dynamics in these systems. The stoichiometric ratio (N : P) for storage in fish mass (~8 : 1) and supply (~20 : 1) was notably consistent across the four coral reef types (but not seagrass or mangrove ecosystems). Published nutrient enrichment studies on corals show that deviations from this N : P supply ratio may be associated with poor coral fitness, providing qualitative support for the hypothesis that corals and their symbionts may be adapted to specific ratios of nutrient supply. Consumer nutrient stoichiometry provides a baseline from which to better understand nutrient dynamics in coral reef and other coastal ecosystems, information that is greatly needed if we are to implement more effective measures to ensure the future health of the world's oceans. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62043
Appears in Collections:影响、适应和脆弱性

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作者单位: Odum School of Ecology, University of Georgia, Athens, GA, United States; Marine Sciences Program, Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, FL, United States; Marine Spatial Ecology lab, University of Queensland, St. Lucia Brisbane, Qld 4072, Australia; Department of Applied Ecology, North Carolina State University, 127 David Clark Labs, Campus Box 7617, Raleigh, NC, 27695, United States

Recommended Citation:
Allgeier J.E.,Layman C.A.,Mumby P.J.,et al. Consistent nutrient storage and supply mediated by diverse fish communities in coral reef ecosystems[J]. Global Change Biology,2014-01-01,20(8)
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