Fish community structure and dynamics are insufficient to mediate coral resilience
Fish community structure and dynamics are insufficient to mediate coral resilience
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鱼类群落结构和动态不足以调节珊瑚的恢复力
DOI：
10.1038/s41559-022-01882-0
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发表时间：
2022-10-03
影响因子：
16.8
通讯作者：
Allgeier, Jacob E.
中科院分区：
文献类型：
--
作者：
Cline, Timothy J.;Allgeier, Jacob E.
珊瑚礁正受到无数压力因素的影响，导致其结构和功能发生巨大变化。鱼类在驱动珊瑚礁生态系统过程中发挥着重要作用，但人们对这些过程在时间或生态系统尺度上出现的程度或被其他驱动因素（例如气候事件和棘冠海星爆发）掩盖的程度知之甚少。利用 2006 年至 2017 年波利尼西亚莫雷阿岛周围 57 个地点的鱼类群落组成以及珊瑚和大型藻类覆盖率的时间序列数据，我们发现鱼类群落多样性可以预测鱼类生物量的时间稳定性，但不能转化为珊瑚覆盖率的时间稳定性。此外，我们发现鱼类在时间和生态系统尺度上对珊瑚动态产生定向影响的证据有限，并且没有证据表明鱼类调节珊瑚从干扰中恢复的速度。我们的研究结果表明，珊瑚礁渔业管理将受益于维持鱼类多样性，但随着时间的推移，这种水平的管理不太可能强烈调节珊瑚的损失或恢复。对波利尼西亚周围几个地点11年来的珊瑚礁珊瑚和大型藻类覆盖度的鱼类群落数据以及跨越干扰事件的比较表明，鱼类群落多样性对珊瑚动态的影响很小，包括从干扰中恢复。
Coral reefs are being impacted by myriad stressors leading to drastic changes to their structure and function. Fishes play essential roles in driving ecosystem processes on coral reefs but the extent to which these processes are emergent at temporal or ecosystem scales or otherwise masked by other drivers (for example, climatic events and crown-of-thorns starfish outbreaks) is poorly understood. Using time series data on fish community composition and coral and macroalgae percentage cover between 2006 and 2017 from 57 sites around Mo'orea, Polynesia, we found that fish community diversity predicts temporal stability in fish biomass but did not translate to temporal stability of coral cover. Furthermore, we found limited evidence of directional influence of fish on coral dynamics at temporal and ecosystem scales and no evidence that fish mediate coral recovery rate from disturbance. Our findings suggest that coral reef fisheries management will benefit from maintaining fish diversity but that this level of management is unlikely to strongly mediate coral loss or recovery over time.A comparison of fish community data with reef coral and macroalgae cover at several sites around Polynesia over 11 years and spanning disturbance events suggests that fish community diversity has only minimal influence on coral dynamics, including recovery from disturbance.