DOI: 10.1002/2016GB005597
Scopus记录号: 2-s2.0-85019897421
论文题名: Energetic costs of calcification under ocean acidification
作者: Spalding C ; , Finnegan S ; , Fischer W ; W
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期: 5 起始页码: 866
结束页码: 877
语种: 英语
英文关键词: acidification
; biomineralization
; extinction
Scopus关键词: biomineralization
; calcification
; calcium carbonate
; carbonate system
; mass extinction
; metazoan
; ocean acidification
; Permian-Triassic boundary
; protein
; seawater
; skeleton
; Metazoa
英文摘要: Anthropogenic ocean acidification threatens to negatively impact marine organisms that precipitate calcium carbonate skeletons. Past geological events, such as the Permian-Triassic Mass Extinction, together with modern experiments generally support these concerns. However, the physiological costs of producing a calcium carbonate skeleton under different acidification scenarios remain poorly understood. Here we present an idealized mathematical model to quantify whole-skeleton costs, concluding that they rise only modestly (up to ∼10%) under acidification expected for 2100. The modest magnitude of this effect reflects in part the low energetic cost of inorganic, calcium carbonate relative to the proteinaceous organic matrix component of skeletons. Our analysis does, however, point to an important kinetic constraint that depends on seawater carbonate chemistry, and we hypothesize that the impact of acidification is more likely to cause extinctions within groups where the timescale of larval development is tightly constrained. The cheapness of carbonate skeletons compared to organic materials also helps explain the widespread evolutionary convergence upon calcification within the metazoa. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77744
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Department of Integrative Biology, University of California, Berkeley, CA, United States
Recommended Citation:
Spalding C,, Finnegan S,, Fischer W,et al. Energetic costs of calcification under ocean acidification[J]. Global Biogeochemical Cycles,2017-01-01,31(5)