Threatened Caribbean coral is able to mitigate the adverse effects of ocean acidification on calcification by increasing feeding rate.
Threatened Caribbean coral is able to mitigate the adverse effects of ocean acidification on calcification by increasing feeding rate.
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DOI：
10.1371/journal.pone.0123394
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Langdon C
中科院分区：
文献类型：
--
作者：
Towle EK;Enochs IC;Langdon C
全球气候变化通过海洋变暖和海洋酸化（OA）威胁珊瑚生长和珊瑚礁生态系统健康。虽然这些压力源的负面影响越来越多地被记录在案，但对确定恢复力途径的研究仍然知之甚少。异养已被证明有助于珊瑚经历由于热或OA应力导致的生长减少;然而，它减轻这些减少的机制仍不清楚。这项研究测试了珊瑚异养的能力，以减轻减少增长，由于气候变化的压力，在极度濒危的加勒比海珊瑚鹿角珊瑚通过改变摄食率和脂质含量。与对照组（26°C/390 ppm）相比，将珊瑚喂食或不喂食，并暴露于高温（30°C）、富集pCO 2（800 ppm）或两者（30°C/800 ppm）下8周。摄食率和脂质含量都增加珊瑚经历OA与目前的条件，并显着相关。美联储珊瑚能够保持环境的增长率在升高的温度和升高的CO2，而unfed珊瑚经历了显着下降的增长相对于美联储同种。我们的研究结果首次表明，受威胁的珊瑚物种可以通过增加摄食率和脂质含量来缓冲OA减少的钙化。
Global climate change threatens coral growth and reef ecosystem health via ocean warming and ocean acidification (OA). Whereas the negative impacts of these stressors are increasingly well-documented, studies identifying pathways to resilience are still poorly understood. Heterotrophy has been shown to help corals experiencing decreases in growth due to either thermal or OA stress; however, the mechanism by which it mitigates these decreases remains unclear. This study tested the ability of coral heterotrophy to mitigate reductions in growth due to climate change stress in the critically endangered Caribbean coral Acropora cervicornis via changes in feeding rate and lipid content. Corals were either fed or unfed and exposed to elevated temperature (30°C), enriched pCO2 (800 ppm), or both (30°C/800 ppm) as compared to a control (26°C/390 ppm) for 8 weeks. Feeding rate and lipid content both increased in corals experiencing OA vs. present-day conditions, and were significantly correlated. Fed corals were able to maintain ambient growth rates at both elevated temperature and elevated CO2, while unfed corals experienced significant decreases in growth with respect to fed conspecifics. Our results show for the first time that a threatened coral species can buffer OA-reduced calcification by increasing feeding rates and lipid content.
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DOI：
10.1016/j.jembe.2010.05.007
发表时间：
2010-07-31
影响因子：
2
作者：
Ferrier-Pages, Christine;Rottier, Cecile;Levy, Oren
通讯作者：
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影响因子：
3.5
作者：
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影响因子：
4.5
作者：
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通讯作者：
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影响因子：
2.5
作者：
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通讯作者：
Wing, SR