Living coral tissue slows skeletal dissolution related to ocean acidification

被引：35

作者：

Kline, David, I ^{[1
,2
,3
,4
,5
]}

Teneva, Lida ^{[6
,7
]}

Okamoto, Daniel K. ^{[8
]}

Schneider, Kenneth ^{[9
,10
]}

Caldeira, Ken ^{[9
]}

Miard, Thomas ^{[3
,4
,5
]}

Chai, Aaron ^{[3
,4
,5
]}

Marker, Malcolm ^{[11
]}

Dunbar, Robert B. ^{[6
]}

Mitchell, B. Greg ^{[2
]}

Dove, Sophie ^{[3
,4
,5
]}

Hoegh-Guldberg, Ove ^{[3
,4
,5
]}

机构：

[1] Smithsonian Trop Res Inst, Ancon, Panama

[2] Univ Calif San Diego, Scripps Inst Oceanog, Integrat Oceanog Div, La Jolla, CA 92093 USA

[3] Univ Queensland, Sch Biol Sci, Global Change Inst, St Lucia, Qld, Australia

[4] Univ Queensland, Sch Biol Sci, Coral Reef Ecosyst Lab, St Lucia, Qld, Australia

[5] Australian Res Council, Ctr Excellence Coral Reef Studies, St Lucia, Qld, Australia

[6] Stanford Univ, Environm Earth Syst Sci, Stanford, CA 94305 USA

[7] OceanX, New York, NY USA

[8] Florida State Univ, Dept Biol Sci, B-157, Tallahassee, FL 32306 USA

[9] Carnegie Inst, Dept Global Ecol, Stanford, CA USA

[10] Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Rehovot, Israel

[11] Univ Queensland, Fac Engn Architecture & Informat Technol, St Lucia, Qld, Australia

来源：

NATURE ECOLOGY & EVOLUTION | 2019年 / 3卷 / 10期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

CO2; ENRICHMENT; REEFS; CALCIFICATION; IMPACTS; RATES;

D O I：

10.1038/s41559-019-0988-x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Climate change is causing major changes to marine ecosystems globally, with ocean acidification of particular concern for coral reefs. Using a 200 d in situ carbon dioxide enrichment study on Heron Island, Australia, we simulated future ocean acidification conditions, and found reduced pH led to a drastic decline in net calcification of living corals to no net growth, and accelerated disintegration of dead corals. Net calcification declined more severely than in previous studies due to exposure to the natural community of bioeroding organisms in this in situ study and to a longer experimental duration. Our data suggest that reef flat corals reach net dissolution at an aragonite saturation state (Omega(AR)) of 2.3 (95% confidence interval: 1.8-2.8) with 100% living coral cover and at Omega(AR)> 3.5 with 30% living coral cover. This model suggests that areas of the reef with relatively low coral mortality, where living coral cover is high, are likely to be resistant to carbon dioxide-induced reef dissolution.

引用

页码：1438 / 1444

页数：7