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首页> 外文期刊>Estuarine Coastal and Shelf Science >Linking benthic community structure to terrestrial runoff and upwelling in the coral reefs of northeastern Hainan Island
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Linking benthic community structure to terrestrial runoff and upwelling in the coral reefs of northeastern Hainan Island

机译：将海底群落结构与海南岛东北部珊瑚礁的地面径流和上升流联系起来

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摘要

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 delta N-15 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. (C) 2014 Elsevier Ltd. All rights reserved.
机译：海南岛东北部的近岸珊瑚礁靠近河口和水产养殖池塘，也位于琼东上升流（QDU）的中心。但是，尚不清楚地面径流和上升流如何影响底栖生物的群落组成和空间分布。在2010年和2011年在海南岛东北部文昌进行的三次航行中，我们确定了海水中的一些环境参数（例如温度，盐度，DO，溶解的无机营养物（DIN），浊度和透明度）和大藻类三角洲N-15，并进行了调查通过视频样带和视觉普查技术在10个站点（即1S-6D）对底栖生物群落（例如活珊瑚覆盖，珊瑚物种丰富，幼小珊瑚密度，大型藻类覆盖和钙化藻类覆盖）进行了研究。结果表明，QDU影响了文昌市的珊瑚礁水域。 2011年，上升流在5月初开始，在7月达到顶峰，在9月消失，大多数上升流事件在5月到7月之间持续了1-2周。结果还表明礁石水中营养丰富。靠近河口和水产养殖池的站的DIN含量较高，且DIN中的氨含量较高，并且始终存在较低的活珊瑚覆盖率，未成年珊瑚密度和较高的大藻类覆盖率。在这项研究的某些站点，活珊瑚的覆盖与大型藻类的覆盖（2S-6D）呈负相关。活珊瑚覆盖率，物种丰富度和幼小珊瑚密度均随着距河流出口距离的增加而增加，而随DIN的升高而降低。这些结果表明，地表径流和上升流刺激了养分的富集，大型藻类的过度生长对海南岛东北部的珊瑚群落具有重要影响。 （C）2014 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2015年第5期|92-102|共11页
  • 作者

    Li Xiubao; Wang Daoru; Huang Hui; Zhang Jing; Lian Jiansheng; Yuan Xiangcheng; Yang Jianhui; Zhang Guoseng;

  • 作者单位

    E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China|Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China;

    Hainan Prov Marine Dev Plan & Design Res Inst, Haikou 570203, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China|Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya 572000, Peoples R China;

    E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China;

    Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China;

    E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    coral community; terrestrial runoff; upwelling; macroalgae; nutrient enrichment; Hainan Island;

    机译：珊瑚群落;地表径流;上升流;宏藻;营养富集;海南岛;

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