DOI: 10.1111/gcb.12351
论文题名: Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification
作者: Kamenos N.A. ; Burdett H.L. ; Aloisio E. ; Findlay H.S. ; Martin S. ; Longbone C. ; Dunn J. ; Widdicombe S. ; Calosi P.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 12 起始页码: 3621
结束页码: 3628
语种: 英语
英文关键词: Calcification
; Coralline algae
; Crustose coralline algae (CCA)
; Maerl
; Ocean acidification
; Photosynthesis
; Raman
; Rate
; Respiration
; Rhodolith
Scopus关键词: acidification
; calcification
; carbon dioxide
; carbon sequestration
; coralline alga
; ecosystem function
; ecosystem service
; photosynthesis
; Raman spectroscopy
; respiration
; rhodolith
; algae
; Corallinales
; carbonic acid derivative
; sea water
; article
; breathing
; calcification
; chemistry
; climate change
; coralline alga
; crustose coralline algae (CCA)
; maerl
; metabolism
; ocean acidification
; pH
; photosynthesis
; physiology
; Raman
; Raman spectrometry
; rate
; red alga
; rhodolith
; United Kingdom
; calcification
; coralline algae
; crustose coralline algae (CCA)
; maerl
; ocean acidification
; photosynthesis
; raman
; rate
; respiration
; rhodolith
; Carbonates
; Climate Change
; Hydrogen-Ion Concentration
; Rhodophyta
; Scotland
; Seawater
; Spectrum Analysis, Raman
英文摘要: Marine pCO2 enrichment via ocean acidification (OA), upwelling and release from carbon capture and storage (CCS) facilities is projected to have devastating impacts on marine biomineralisers and the services they provide. However, empirical studies using stable endpoint pCO2 concentrations find species exhibit variable biological and geochemical responses rather than the expected negative patterns. In addition, the carbonate chemistry of many marine systems is now being observed to be more variable than previously thought. To underpin more robust projections of future OA impacts on marine biomineralisers and their role in ecosystem service provision, we investigate coralline algal responses to realistically variable scenarios of marine pCO2 enrichment. Coralline algae are important in ecosystem function; providing habitats and nursery areas, hosting high biodiversity, stabilizing reef structures and contributing to the carbon cycle. Red coralline marine algae were exposed for 80 days to one of three pH treatments: (i) current pH (control); (ii) low pH (7.7) representing OA change; and (iii) an abrupt drop to low pH (7.7) representing the higher rates of pH change observed at natural vent systems, in areas of upwelling and during CCS releases. We demonstrate that red coralline algae respond differently to the rate and the magnitude of pH change induced by pCO2 enrichment. At low pH, coralline algae survived by increasing their calcification rates. However, when the change to low pH occurred at a fast rate we detected, using Raman spectroscopy, weaknesses in the calcite skeleton, with evidence of dissolution and molecular positional disorder. This suggests that, while coralline algae will continue to calcify, they may be structurally weakened, putting at risk the ecosystem services they provide. Notwithstanding evolutionary adaptation, the ability of coralline algae to cope with OA may thus be determined primarily by the rate, rather than magnitude, at which pCO2 enrichment occurs. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62280
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Geographical and Earth Sciences, University of Glasgow, Glasgow, G12 8QQ, United Kingdom; Department of Earth Sciences, University of St Andrews, Fife, KY16 9AJ, United Kingdom; Marine Biology and Ecology Research Centre, School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth, PL4 8AA, United Kingdom; Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, United Kingdom; CNRS, Laboratoire Adaptation et Diverstié en Milieu Marin, Station Biologique de Roscoff, Place Georges Teissier, 29688 Roscoff Cedex, France; Université Pierre et Marie Curie - Paris 6, Laboratoire Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, Place Georges Teissier, 29688 Roscoff Cedex, France
Recommended Citation:
Kamenos N.A.,Burdett H.L.,Aloisio E.,et al. Coralline algal structure is more sensitive to rate, rather than the magnitude, of ocean acidification[J]. Global Change Biology,2013-01-01,19(12)