Intergeneric and geomorphological variations in Symbiodiniaceae densities of reef-building corals in an isolated atoll, central South China Sea.
Intergeneric and geomorphological variations in Symbiodiniaceae densities of reef-building corals in an isolated atoll, central South China Sea.
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DOI：
10.1016/j.marpolbul.2020.111946
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发表时间：
2020-12
影响因子：
5.8
通讯作者：
Yanting Liang;Kefu Yu;Ziliang Pan;Zhenjun Qin;Zhiheng Liao;Biao Chen;Xueyong Huang;Lijia Xu
中科院分区：
文献类型：
--
作者：
Yanting Liang;Kefu Yu;Ziliang Pan;Zhenjun Qin;Zhiheng Liao;Biao Chen;Xueyong Huang;Lijia Xu
南海中部孤立环礁的珊瑚健康状况尚不清楚。共生珊瑚密度能有效反映硬珊瑚的耐热性和健康状况。本文分析了黄岩岛238个样品的SDs。结果表明，SD的属间和地貌差异显着。属间的变异可能反映出高SD的珊瑚具有较强的耐热性。地貌分析表明，外礁坡的SDs高于泻湖。水动力和海表温度可能是主要的影响因素。最值得注意的是，珊瑚在南海HA有较高的SD比那些在邻近的珊瑚礁，表明他们的耐热性很强，这可能与HA的局部上升流。这些结果表明，HA有潜力作为珊瑚的避难所，但越来越多的人为干扰限制了它的功能。
The healthy status of corals in the isolated atolls of the central South China Sea (SCS) remains unclear. Symbiodiniaceae density (SD) can effectively reflect the thermal tolerance and health of hard corals. Here, the SDs of 238 samples from the Huangyan Atoll (HA) were analyzed. The results revealed significantly intergeneric and geomorphological differences in SD. Intergeneric variation may reflect that corals with high SD have stronger thermal tolerance. Geomorphic analysis showed that the SDs at the outer reef slope were higher than in the lagoon. Hydrodynamics and sea surface temperature were likely the main influencing factors. Most notably, corals in SCS HA had higher SDs than those at neighboring reefs, indicating that their thermal tolerance were strong, which may be related to HA's local upwelling. These results suggest that the HA has the potential to serve as a refuge for corals, but increasing human disturbance limit its function.