Nighttime dissolution in a temperate coastal ocean ecosystem increases under acidification

被引:46
|
作者
Kwiatkowski, Lester [1 ]
Gaylord, Brian [2 ]
Hill, Tessa [2 ,3 ]
Hosfelt, Jessica [2 ,3 ]
Kroeker, Kristy J. [2 ,4 ]
Nebuchina, Yana [1 ]
Ninokawa, Aaron [2 ]
Russell, Ann D. [2 ,3 ]
Rivest, Emily B. [2 ]
Sesbouee, Marine [1 ]
Caldeira, Ken [1 ]
机构
[1] Carnegie Inst Sci, Dept Global Ecol, 260 Panama St, Stanford, CA 94305 USA
[2] Univ Calif Davis, Bodega Marine Lab, Bodega Bay, CA 94923 USA
[3] Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA
[4] Dept Ecol & Evolutionary Biol, Santa Cruz, CA 95064 USA
来源
SCIENTIFIC REPORTS | 2016年 / 6卷
基金
美国国家科学基金会;
关键词
CALCIFICATION RATE; CARBONIC-ACID; CORAL; 21ST-CENTURY; DISSOCIATION; ORGANISMS; CONSTANTS; SEAWATER; ALGAE; STATE;
D O I
10.1038/srep22984
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Anthropogenic emissions of carbon dioxide (CO2) are causing ocean acidification, lowering seawater aragonite (CaCO3) saturation state (Omega(arag)), with potentially substantial impacts on marine ecosystems over the 21st Century. Calcifying organisms have exhibited reduced calcification under lower saturation state conditions in aquaria. However, the in situ sensitivity of calcifying ecosystems to future ocean acidification remains unknown. Here we assess the community level sensitivity of calcification to local CO2-induced acidification caused by natural respiration in an unperturbed, biodiverse, temperate intertidal ecosystem. We find that on hourly timescales nighttime community calcification is strongly influenced by Omega(arag), with greater net calcium carbonate dissolution under more acidic conditions. Daytime calcification however, is not detectably affected by Omega(arag). If the short-term sensitivity of community calcification to Omega(arag) is representative of the long-term sensitivity to ocean acidification, nighttime dissolution in these intertidal ecosystems could more than double by 2050, with significant ecological and economic consequences.
引用
收藏
页数:9
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