Ocean acidification reduces coral recruitment by disrupting intimate larval-algal settlement interactions
Ocean acidification reduces coral recruitment by disrupting intimate larval-algal settlement interactions
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DOI：
10.1111/j.1461-0248.2012.01743.x
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发表时间：
2012-04-01
期刊：
影响因子：
8.8
通讯作者：
Mumby, Peter J.
中科院分区：
文献类型：
--
作者：
Doropoulos, Christopher;Ward, Selina;Mumby, Peter J.
成功的招聘在浅礁生态系统往往涉及特定的线索，连接浮游无脊椎动物幼虫与特定的甲壳珊瑚藻（CCA）在解决。虽然海洋酸化（OA）可以减少幼虫的定居和丰富的CCA，OA对浮游幼虫和他们的首选定居基质之间的相互作用的影响是未知的。在这里，我们表明，CO2浓度（800和1300亩大气压）预计将发生在本世纪末显着减少珊瑚（鹿角珊瑚）解决和CCA覆盖= 45%。对诱导珊瑚定居很重要的CCA（Titanoderma spp.，水石属）受OA影响最严重。令人惊讶的是，唯一的首选解决基板（Titanoderma）在实验对照避免珊瑚幼虫pCO2增加，和其他基质的选择。我们的研究结果表明，OA可能会减少珊瑚种群的恢复，减少珊瑚定居率，扰乱幼虫定居行为，并减少最理想的珊瑚藻类物种的可用性，成功的珊瑚招聘。
Successful recruitment in shallow reef ecosystems often involves specific cues that connect planktonic invertebrate larvae with particular crustose coralline algae (CCA) during settlement. While ocean acidification (OA) can reduce larval settlement and the abundance of CCA, the impact of OA on the interactions between planktonic larvae and their preferred settlement substrate are unknown. Here, we demonstrate that CO2 concentrations (800 and 1300 mu atm) predicted to occur by the end of this century significantly reduce coral (Acropora millepora) settlement and CCA cover by = 45%. The CCA important for inducing coral settlement (Titanoderma spp., Hydrolithon spp.) were the most deleteriously affected by OA. Surprisingly, the only preferred settlement substrate (Titanoderma) in the experimental controls was avoided by coral larvae as pCO2 increased, and other substrata selected. Our results suggest OA may reduce coral population recovery by reducing coral settlement rates, disrupting larval settlement behaviour, and reducing the availability of the most desirable coralline algal species for successful coral recruitment.