DOI: 10.1111/gcb.13023
论文题名: Framework of barrier reefs threatened by ocean acidification
作者: Comeau S. ; Lantz C.A. ; Edmunds P.J. ; Carpenter R.C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 3 起始页码: 1225
结束页码: 1234
语种: 英语
英文关键词: Calcification
; Coralline algae
; Corals
; Flow
; Fore reef
; Ocean acidification
; Reef pavement
Scopus关键词: algae
; Anthozoa
; carbon dioxide
; carbonic acid derivative
; sea water
; animal
; Anthozoa
; bone mineralization
; chemistry
; coral reef
; Polynesia
; Animals
; Anthozoa
; Calcification, Physiologic
; Carbon Dioxide
; Carbonates
; Coral Reefs
; Polynesia
; Seawater
英文摘要: To date, studies of ocean acidification (OA) on coral reefs have focused on organisms rather than communities, and the few community effects that have been addressed have focused on shallow back reef habitats. The effects of OA on outer barrier reefs, which are the most striking of coral reef habitats and are functionally and physically different from back reefs, are unknown. Using 5-m long outdoor flumes to create treatment conditions, we constructed coral reef communities comprised of calcified algae, corals, and reef pavement that were assembled to match the community structure at 17 m depth on the outer barrier reef of Moorea, French Polynesia. Communities were maintained under ambient and 1200 μatm pCO2 for 7 weeks, and net calcification rates were measured at different flow speeds. Community net calcification was significantly affected by OA, especially at night when net calcification was depressed ~78% compared to ambient pCO2. Flow speed (2-14 cm s-1) enhanced net calcification only at night under elevated pCO2. Reef pavement also was affected by OA, with dissolution ~86% higher under elevated pCO2 compared to ambient pCO2. These results suggest that net accretion of outer barrier reef communities will decline under OA conditions predicted within the next 100 years, largely because of increased dissolution of reef pavement. Such extensive dissolution poses a threat to the carbonate foundation of barrier reef communities. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61455
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, California State University, 18111 Nordhoff Street, Northridge, CA, United States; ARC Centre of Excellence in Coral Reef Studies, The University of Western Australia, School of Earth and Environment and Ocean's InstituteWA, Australia
Recommended Citation:
Comeau S.,Lantz C.A.,Edmunds P.J.,et al. Framework of barrier reefs threatened by ocean acidification[J]. Global Change Biology,2016-01-01,22(3)