Zonal macroalgae blooms influenced by different aquaculture discharges in the Xuwen fringing reef, southern China
Zonal macroalgae blooms influenced by different aquaculture discharges in the Xuwen fringing reef, southern China
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中国南方徐闻岸礁不同养殖排放量对带状大型藻华的影响
DOI：
10.1016/j.scitotenv.2022.153594
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发表时间：
2022
影响因子：
9.8
通讯作者：
Hui Huang
中科院分区：
文献类型：
--
作者：
Xinming Lei;Yuyang Zhang;Lei Jiang;Yong Luo;Guowei Zhou;Youfang Sun;Hui Huang
造礁珊瑚正在经历气候变化和全球人类活动增加的重大影响。珊瑚礁退化与珊瑚物种丰度和多样性的丧失有关，随后随着从珊瑚为主的群落状态向以大型藻类为主的群落状态的转变而通常发生生态失衡。中国南部徐闻国家珊瑚礁保护区中水华形成的大型藻类的物种组成以及影响其组成的相关驱动因素仍不清楚。 2016年3月，我们调查了该珊瑚礁区域性大型藻华与不同水产养殖排放量之间的关系。三个研究地点的大型藻类群落结构差异很大，高位池塘养殖排放区以绿藻和褐藻为主；红藻、绿藻和褐藻在滩涂水产养殖排放区占主导地位；围网养殖排放区以绿藻和褐藻为主。温度、总悬浮固体（TSS）、叶绿素（Chla）和溶解无机营养物（DIN）可以解释大型藻类群落结构和组成的显着变化，而温度和TSS与这些变量有显着关系。我们的研究结果强调了水产养殖污水排放对珊瑚礁健康的负面影响，我们建议对进入珊瑚礁的人为污水排放进行有效和综合的管理。
Reef-building corals are experiencing major impacts from climate change and increasing anthropogenic activities worldwide. Coral reef degradation is associated with the loss of coral species abundance and diversity, followed by an ecological imbalance that commonly occurs with a shift from coral- to macroalgae-dominated community states. The species composition of the bloom-forming macroalgae in the Xuwen National Coral Reef Reserve, southern China, and the associated drivers affecting the composition remain unclear. We investigated the relationship between zonal macroalgae blooms and different aquaculture discharges in this coral reef in March 2016. The structure of macroalgae communities varied greatly among the three study sites, with green and brown algae dominating the high-level pond aquaculture discharge zone; red, green and brown algae dominating the tidal flat aquaculture discharge zone; and green and brown algae dominating in the enclosure aquaculture discharge zone. A significant amount of variation in the structure and composition of the macroalgae community was explained by temperature, total suspended solids (TSS), chlorophylla(Chla) and dissolved inorganic nutrients (DIN), while temperature and TSS had a significant relationship with these variables. Our findings highlight the negative effects of aquaculture sewage discharges on the health of coral reefs, and we recommend effective and integrated management of anthropogenic sewage discharge into coral reefs.