DOI: 10.1111/gcb.12792
论文题名: Regional-scale dominance of non-framework building corals on Caribbean reefs affects carbonate production and future reef growth
作者: Perry C.T. ; Steneck R.S. ; Murphy G.N. ; Kench P.S. ; Edinger E.N. ; Smithers S.G. ; Mumby P.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 3 起始页码: 1153
结束页码: 1164
语种: 英语
英文关键词: Orbicella
; Acropora
; Carbonate budgets
; Caribbean
; Coral reefs
; Reef growth
Scopus关键词: calcification
; carbonate
; community composition
; coral
; coral reef
; dominance
; growth
; relative abundance
; Atlantic Ocean
; Caribbean Sea
; Acropora
; Agaricia
; Anthozoa
; Porites
; Siderastrea
; carbonic acid derivative
; animal
; Anthozoa
; biodiversity
; bone mineralization
; Caribbean
; coral reef
; growth, development and aging
; metabolism
; season
; Animals
; Anthozoa
; Biodiversity
; Calcification, Physiologic
; Carbonates
; Caribbean Region
; Coral Reefs
; Seasons
英文摘要: Coral cover on Caribbean reefs has declined rapidly since the early 1980's. Diseases have been a major driver, decimating communities of framework building Acropora and Orbicella coral species, and reportedly leading to the emergence of novel coral assemblages often dominated by domed and plating species of the genera Agaricia, Porites and Siderastrea. These corals were not historically important Caribbean framework builders, and typically have much smaller stature and lower calcification rates, fuelling concerns over reef carbonate production and growth potential. Using data from 75 reefs from across the Caribbean we quantify: (i) the magnitude of non-framework building coral dominance throughout the region and (ii) the contribution of these corals to contemporary carbonate production. Our data show that live coral cover averages 18.2% across our sites and coral carbonate production 4.1 kg CaCO3 m-2 yr-1. However, non-framework building coral species dominate and are major carbonate producers at a high proportion of sites; they are more abundant than Acropora and Orbicella at 73% of sites; contribute an average 68% of the carbonate produced; and produce more than half the carbonate at 79% of sites. Coral cover and carbonate production rate are strongly correlated but, as relative abundance of non-framework building corals increases, average carbonate production rates decline. Consequently, the use of coral cover as a predictor of carbonate budget status, without species level production rate data, needs to be treated with caution. Our findings provide compelling evidence for the Caribbean-wide dominance of non-framework building coral taxa, and that these species are now major regional carbonate producers. However, because these species typically have lower calcification rates, continued transitions to states dominated by non-framework building coral species will further reduce carbonate production rates below 'predecline' levels, resulting in shifts towards negative carbonate budget states and reducing reef growth potential. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61738
Appears in Collections: 影响、适应和脆弱性
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作者单位: Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; School of Marine Sciences, University of Maine, Darling Marine Center, Walpole, ME, United States; School of Environment, The University of Auckland, Private Bag 92019, Auckland, New Zealand; Department of Geography and Department of Biology, Memorial University, St. John's, NL, Canada; College of Marine and Environmental Sciences, James Cook University, Townsville, QLD, Australia; Marine Spatial Ecology Lab, School of Biological Sciences, University of Queensland, Brisbane, QLD, Australia
Recommended Citation:
Perry C.T.,Steneck R.S.,Murphy G.N.,et al. Regional-scale dominance of non-framework building corals on Caribbean reefs affects carbonate production and future reef growth[J]. Global Change Biology,2015-01-01,21(3)