Linking benthic community structure to terrestrial runoff and upwelling in the coral reefs of northeastern Hainan Island
Linking benthic community structure to terrestrial runoff and upwelling in the coral reefs of northeastern Hainan Island
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海南岛东北部珊瑚礁底栖群落结构与陆地径流和上升流的联系
DOI：
10.1016/j.ecss.2014.09.021
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发表时间：
2015-04
期刊：
影响因子：
--
通讯作者：
Guoseng Zhang
中科院分区：
文献类型：
--
作者：
Xiubao Li;Daoru Wang;Hui Huang;Jing Zhang;Jiansheng Lian;Xiangcheng Yuan;Jianhui Yang;Guoseng Zhang
海南岛东北部近岸珊瑚礁靠近河口和养殖池塘，也位于琼东上升流（QDU）的中心。然而，陆地径流和上升流如何影响底栖生物的群落组成和空间分布仍不清楚。 2010年和2011年在海南岛东北部文昌的三次航行期间，我们通过视频确定了海水中的一部分环境参数（例如温度、盐度、溶解氧、溶解性无机养分（DIN）、浊度和透明度）和大型藻δ15N，并通过视频调查了底栖群落（例如活珊瑚覆盖度、珊瑚物种丰富度、幼珊瑚密度、大型藻类覆盖度和钙化藻覆盖度） 10 个站点的样线和目视普查技术（即 1S-6D）。结果表明，QDU对文昌礁体海域产生了影响。 2011年，上升流开始于5月初，7月达到峰值，9月消失，大多数上升流事件在5月至7月之间持续1至2周。结果还表明，珊瑚礁水营养丰富。靠近河口和水产养殖池塘的监测站的 DIN 水平较高，且 DIN 中氨的比例较高，并且活珊瑚覆盖率、幼珊瑚密度和大型藻类覆盖率持续较低。在本研究的一些站点，活珊瑚覆盖度与大型藻类覆盖度呈负相关（即 2S-6D）。活珊瑚覆盖度、物种丰富度和幼珊瑚密度均随着距河口距离的增加而增加，并随着 DIN 的增加而减少。这些结果表明，陆地径流和上升流刺激了营养物富集，而过度生长的大型藻类对海南岛东北部的珊瑚群落具有重要影响。
Near-shore coral reefs in northeastern Hainan Island are close to river mouths and aquaculture ponds, and also located at the center of the Qiongdong Upwelling (QDU). However, it is still unclear how terrestrial runoff and upwelling influence the community composition and spatial distribution of the benthos. During three cruises in 2010 and 2011 in Wenchang, northeastern Hainan Island, we determined a subset of environmental parameters in seawater (e.g. temperature, salinity, DO, dissolved inorganic nutrient (DIN), turbidity and transparency) and macroalgal δ15N and investigated the benthic communities (e.g. live coral cover, coral species richness, juvenile coral density, macroalgal cover and coverage of calcified algae) by video transect and visual census techniques at 10 stations (i.e. 1S–6D). The results showed that the QDU has influenced the reef waters in Wenchang. In 2011, the upwelling started in early May, peaked in July and disappeared in September and most upwelling events lasted for 1–2 weeks between May and July. The results also demonstrated that the reef water was nutrient enriched. Stations close to the river mouth and aquaculture ponds had higher levels of DIN and a higher percentage of ammonia in DIN, and there was consistently lower live coral cover, juvenile coral density and higher macroalgal cover. At some stations in this study, live coral cover was negatively correlated with macroalgal cover (i.e. 2S–6D). Live coral cover, species richness, and juvenile coral density all increased with the distance away from the river outlet and decreased with the rise of DIN. These results suggest that terrestrial runoff and upwelling stimulate nutrient enrichment, and that overgrowing macroalgae has an important influence on the coral communities in northeastern Hainan Island.
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影响因子：
2.2
作者：
Lirman, D;Biber, P
通讯作者：
Biber, P
DOI：
10.1016/j.scitotenv.2011.06.017
发表时间：
2011-09
期刊：
The Science of the total environment
影响因子：
--
作者：
Ni Su;Jinzhou Du;W. Moore;Sumei Liu;Jing Zhang
通讯作者：
Ni Su;Jinzhou Du;W. Moore;Sumei Liu;Jing Zhang
DOI：
10.1017/s0025315414000460
发表时间：
2014-04
影响因子：
1.2
作者：
E. Titlyanov;T. Titlyanova;Xiubao Li;G. I. Hansen;Hui Huang
通讯作者：
E. Titlyanov;T. Titlyanova;Xiubao Li;G. I. Hansen;Hui Huang
影响因子：
5.8
作者：
Fabricius, K;De'ath, G;Williams, DM
通讯作者：
Williams, DM
DOI：
10.1007/978-94-007-0114-4_28
发表时间：
2011-01-01
期刊：
CORAL REEFS: AN ECOSYSTEM IN TRANSITION
影响因子：
--
作者：
Fabricius, Katharina E.
通讯作者：
Fabricius, Katharina E.