文献类型：期刊文献

英文题名：Atmospheric Nitrogen Deposition Increases the Possibility of Macroalgal Dominance on Remote Coral Reefs

作者：Chen, Xiaoyan[1,2,3];Yu, Kefu[1,2,3];Huang, Xueyong[1,2,3];Wang, Yinghui[1,2,3];Liao, Zhiheng[1,2,3];Zhang, Ruijie[1,2,3];Yao, Qiucui[1,2,3];Wang, Jikun[1,2,3];Wang, Wenhuan[1,2,3];Tao, Shichen[1,2,3,4];Zhang, Huiling[5]

机构：[1]Guangxi Univ, Coral Reefs Res Ctr China, Nanning, Peoples R China;[2]Guangxi Univ, Guangxi Lab Study Coral Reefs South China Sea, Nanning, Peoples R China;[3]Guangxi Univ, Sch Marine Sci, Nanning, Peoples R China;[4]Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China;[5]Guangdong Ocean Univ, Coll Ocean Engn, Zhanjiang, Peoples R China

年份：2019

卷号：124

期号：5

起止页码：1355

外文期刊名：JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES

收录：SCI-EXPANDED(收录号：WOS:000477719600021)、、Scopus(收录号：2-s2.0-85069961428)、WOS

基金：This work was funded by the National Natural Science Foundation of China (91428203 and 41025007), the Guangxi Scientific Projects (AD17129063 and AA17204074), and the Bagui Fellowship (2014) from Guangxi Province. We thank the reviewer Terry Done and two anonymous reviewers for their helpful comments and suggestions. Hainian Yu from the University of Queensland is thanked for the language improvement. Data resource and access are provided as the supporting information (Table S1).

语种：英文

外文关键词：Macroalgal dominance; remote coral reefs; atmospheric nitrogen deposition; south China Sea

外文摘要：Field surveys in the Xisha and Zhongsha archipelagos, in the midnorthern South China Sea, show macroalgal dominance on remote reefs that were previously dominated by corals. This study was conducted to investigate the underlying mechanisms of this phenomenon. Benthic composition analyses indicated that macroalgae that are rare on pristine reefs dominated 27% of 81 study sites, and live coral cover dropped to 16.3% in 2015. Nearly one third of corals came into direct contact with macroalgae. Further analyses on the algal distribution patterns, nutrient fluxes, and air mass backward trajectories suggest that atmospheric nitrogen deposition is the major external supply of nutrients. The greater cover of macroalgae on the coral reefs coincides with the considerable atmospheric nitrogen deposition from the southwest during the summer monsoon. Moreover, the remote coral reefs hosted sevenfold greater macroalgae cover than the coastal coral reefs because atmospheric nitrogen assimilates effectively in the N limited and high visibility water. Macroalgae promotion is projected to grow with the increasing atmospheric nitrogen supply in the coming decade, which constitutes a larger stress on remote coral reefs.