DOI: 10.1111/gcb.14379
Scopus记录号: 2-s2.0-85052449926
论文题名: Similar controls on calcification under ocean acidification across unrelated coral reef taxa
作者: Comeau S. ; Cornwall C.E. ; DeCarlo T.M. ; Krieger E. ; McCulloch M.T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 10 起始页码: 4857
结束页码: 4868
语种: 英语
英文关键词: calcifying fluid
; calcium
; coral
; coralline alga
; dissolved inorganic carbon
; pH
; physiology
Scopus关键词: algae
; Anthozoa
英文摘要: Ocean acidification (OA) is a major threat to marine ecosystems, particularly coral reefs which are heavily reliant on calcareous species. OA decreases seawater pH and calcium carbonate saturation state (Ω), and increases the concentration of dissolved inorganic carbon (DIC). Intense scientific effort has attempted to determine the mechanisms via which ocean acidification (OA) influences calcification, led by early hypotheses that calcium carbonate saturation state (Ω) is the main driver. We grew corals and coralline algae for 8–21 weeks, under treatments where the seawater parameters Ω, pH, and DIC were manipulated to examine their differential effects on calcification rates and calcifying fluid chemistry (Ωcf, pHcf, and DICcf). Here, using long duration experiments, we provide geochemical evidence that differing physiological controls on carbonate chemistry at the site of calcification, rather than seawater Ω, are the main determinants of calcification. We found that changes in seawater pH and DIC rather than Ω had the greatest effects on calcification and calcifying fluid chemistry, though the effects of seawater carbonate chemistry were limited. Our results demonstrate the capacity of organisms from taxa with vastly different calcification mechanisms to regulate their internal chemistry under extreme chemical conditions. These findings provide an explanation for the resistance of some species to OA, while also demonstrating how changes in seawater DIC and pH under OA influence calcification of key coral reef taxa. © 2018 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110223
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Oceans Graduate School, The University of Western Australia, Crawley, WA, Australia; ARC Centre of Excellence for Coral Reef Studies, Crawley, WA, Australia; Laboratoire d'Océanographie de Villefranche, CNRS-INSU, Sorbonne Université, Villefranche-sur-mer, France; Fachbereich 2 Biologie/Chemie, University of Bremen, Bremen, Germany; School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
Recommended Citation:
Comeau S.,Cornwall C.E.,DeCarlo T.M.,et al. Similar controls on calcification under ocean acidification across unrelated coral reef taxa[J]. Global Change Biology,2018-01-01,24(10)