globalchange  > 气候变化事实与影响
DOI: 10.1002/2015GB005260
Scopus记录号: 2-s2.0-84978902235
论文题名:
Benthic marine calcifiers coexist with CaCO3-undersaturated seawater worldwide
作者: Lebrato M; , Andersson A; J; , Ries J; B; , Aronson R; B; , Lamare M; D; , Koeve W; , Oschlies A; , Iglesias-Rodriguez M; D; , Thatje S; , Amsler M; , Vos S; C; , Jones D; O; B; , Ruhl H; A; , Gates A; R; , McClintock J; B
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期:7
起始页码: 1038
结束页码: 1053
语种: 英语
英文关键词: benthic ; Mg-calcite ; mineralogy ; ocean acidification ; saturation state
Scopus关键词: acidification ; anthropogenic effect ; benthic fauna ; calcification ; calcium carbonate ; environmental conditions ; magnesium ; mineralogy ; seawater ; skeleton ; supersaturation
英文摘要: Ocean acidification and decreasing seawater saturation state with respect to calcium carbonate (CaCO3) minerals have raised concerns about the consequences to marine organisms that build CaCO3 structures. A large proportion of benthic marine calcifiers incorporate Mg2+ into their skeletons (Mg-calcite), which, in general, reduces mineral stability. The relative vulnerability of some marine calcifiers to ocean acidification appears linked to the relative solubility of their shell or skeletal mineralogy, although some organisms have sophisticated mechanisms for constructing and maintaining their CaCO3 structures causing deviation from this dependence. Nevertheless, few studies consider seawater saturation state with respect to the actual Mg-calcite mineralogy (ΩMg-x) of a species when evaluating the effect of ocean acidification on that species. Here, a global dataset of skeletal mole % MgCO3 of benthic calcifiers and in situ environmental conditions spanning a depth range of 0 m (subtidal/neritic) to 5600 m (abyssal) was assembled to calculate in situ ΩMg-x. This analysis shows that 24% of the studied benthic calcifiers currently experience seawater mineral undersaturation (ΩMg-x < 1). As a result of ongoing anthropogenic ocean acidification over the next 200 to 3000 years, the predicted decrease in seawater mineral saturation will expose approximately 57% of all studied benthic calcifying species to seawater undersaturation. These observations reveal a surprisingly high proportion of benthic marine calcifiers exposed to seawater that is undersaturated with respect to their skeletal mineralogy, underscoring the importance of using species-specific seawater mineral saturation states when investigating the impact of CO2-induced ocean acidification on benthic marine calcification. ©2016. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77837
Appears in Collections:气候变化事实与影响

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作者单位: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Now at Kiel University (CAU), Kiel, Germany; Department of Marine and Environmental Sciences, Marine Science Center, Northeastern University, Boston, MA, United States; Department of Biological Sciences, Florida Institute of Technology, Melbourne, FL, United States; Department of Marine Sciences, University of Otago, Dunedin, New Zealand; Biogeochemical Modelling, GEOMAR, Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA, United States; Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, United Kingdom; Department of Biology, University of Alabama, Birmingham, AL, United States; National Oceanography Centre, University of Southampton Waterfront Campus, Southampton, United Kingdom

Recommended Citation:
Lebrato M,, Andersson A,J,et al. Benthic marine calcifiers coexist with CaCO3-undersaturated seawater worldwide[J]. Global Biogeochemical Cycles,2016-01-01,30(7)
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