Globally, coral reefs are degrading due to a variety of stressors including climate change and pollution. Active restoration is an important effort for sustaining coral reefs where, typically, coral fragments are outplanted onto degraded reefs. Coral outplants, however, can experience mortality in response to a range of stressors. We pair results of outplant monitoring observations with satellite‐based measurements of multiple oceanographic variables to estimate the relative importance of each driver to coral outplant survival. We find that when considering mean environmental conditions experienced by outplants during the monitoring period, particulate organic carbon (POC) levels are most important in determining outplant survival, with certain levels of POC beneficial for outplants. Sea surface temperature anomalies (SSTA) are also important determinants of outplant survival, where survival is greatest in regions with minimal or slightly negative anomalies. Survival also increases with increasing distance to land, likely due to a reduction in negative ridge‐to‐reef effects on coral outplants. When considering the range (min–max) of environmental conditions experienced during the monitoring period, large fluctuations in photosynthetically active radiation (PAR) and POC are most important in determining outplant survival. Increasing outplant depth can help to counter the negative impacts of large fluctuations in environmental variables. We find that a variety of remotely sensed oceanographic variables have significant impacts on survival and should be considered in coral restoration planning to help evaluate potential restoration sites and ultimately maximize coral outplant survival.

中文翻译：

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遥感环境驱动因素对珊瑚外植体存活的影响

在全球范围内，由于包括气候变化和污染在内的各种压力，珊瑚礁正在退化。积极的恢复是维持珊瑚礁的一项重要工作，在珊瑚礁中，通常将珊瑚碎片移植到退化的珊瑚礁上。然而，珊瑚外植体可能会因各种压力源而死亡。我们将外植体监测观测结果与基于卫星的多个海洋变量进行测量相结合，以估算每个驱动因素对珊瑚外植体生存的相对重要性。我们发现，考虑到监测期内外植体所经历的平均环境条件，颗粒有机碳（POC）水平对于确定外植体存活率最为重要，其中一定水平的POC对外植体有利。海表温度异常（SSTA）也是外植体存活的重要决定因素，其中外源异常最小或略微为负的区域的存活率最高。随着距陆地距离的增加，生存率也增加了，这可能是由于减少了对珊瑚外植体的脊对礁的负面影响。考虑到监测期间所经历的环境条件的范围（最小-最大），光合作用活性辐射（PAR）和POC的较大波动对于确定外植体存活最为重要。增加外植体深度可以帮助抵消环境变量大幅度波动带来的负面影响。