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Historical changes in seagrass beds in a rapidly urbanizing area of Guangdong Province: Implications for conservation and management

文献类型：期刊论文

作者Jiang, Zhijian1,2,3; Cui, Lijun1; Liu, Songlin2,3; Zhao, Chunyu1,4; Wu, Yunchao2,3; Chen, Qiming1; Yu, Shuo5; Li, Jinlong1; He, Jialu1; Fang, Yang1
刊名GLOBAL ECOLOGY AND CONSERVATION
出版日期2020
卷号22页码:e01035
关键词Seagrass beds Historical change Nutrient optimum Sediment substrate Salinity Intraspecific competition
ISSN号2351-9894
DOI10.1016/j.gecco.2020.e01035
英文摘要Rapid urbanization leads to an accelerating decline of seagrass beds. The status of seagrass beds along the entire coastline of a rapidly urbanizing area, Guangdong Province, was examined to document the change in seagrass beds and to explore the determinants of seagrasses characteristics and their plasticity. Thirteen seagrass beds were newly discovered with a total area as 679.04 ha, whereas eleven known seagrass beds have decreased from 972.55 ha to 858.67 ha with seven of them having disappeared in recent decade primarily due to exacerbated construction of artificial shorelines and beach dams, increased nutrient inputs from fish caging and shrimp pond culture, oyster culture, mangrove planting and shellfish collection. The leaf nitrogen content of Halophila ovalis, which dominated the largest beds, increased from (2.09 +/- 0.24)% in 2011 to (3.39 +/- 0.18)% in 2017, indicating enhanced eutrophication. The optimum seawater dissolved inorganic nitrogen and dissolved inorganic phosphorus levels for Halophila beccarii were 40 mu mol/L and 2.5 mu mol/L, respectively. The standing stock and plant dimensions of H. beccarii were positively correlated with sediment mud content. Longer, wider leaves, and greater aboveground and belowground biomass were observed at lower salinities, indicating that H. beccarii prefers hyposaline habitats. High shoot density could induce intraspecific competition followed by self-thinning in H. beccarii, leading to reduced leaf area, aboveground and belowground biomass, and root length. Thus, long-term monitoring of seagrass beds along the rapidly urbanizing coastline of Guangdong Province is needed to unravel the mechanisms of decline and to develop effective management strategies. (C) 2020 The Authors. Published by Elsevier B.V.
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41730529, 41976144]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0405]; National Key Research and Development Program of China [2017YFC0506104]; National Specialized Project of Science and Technology [2015FY110600]; Natural Science Fund of GuangdongNational Natural Science Foundation of Guangdong Province [2019A1515010552, 2018A030310043]; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY01, ISEE2018ZD02] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41730529, 41976144]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0405]; National Key Research and Development Program of China [2017YFC0506104]; National Specialized Project of Science and Technology [2015FY110600]; Natural Science Fund of GuangdongNational Natural Science Foundation of Guangdong Province [2019A1515010552, 2018A030310043]; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY01, ISEE2018ZD02]
源URL[http://ir.scsio.ac.cn/handle/344004/18412]  
专题南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China
4.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China
5.Dezhou Univ, Coll Resource Environm & Planning, Dezhou 253023, Peoples R China
6.State Ocean Adm, Inst Oceanog 4, Beihai 53600, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Zhijian,Cui, Lijun,Liu, Songlin,et al. Historical changes in seagrass beds in a rapidly urbanizing area of Guangdong Province: Implications for conservation and management[J]. GLOBAL ECOLOGY AND CONSERVATION,2020,22:e01035.
APA Jiang, Zhijian.,Cui, Lijun.,Liu, Songlin.,Zhao, Chunyu.,Wu, Yunchao.,...&Huang, Xiaoping.(2020).Historical changes in seagrass beds in a rapidly urbanizing area of Guangdong Province: Implications for conservation and management.GLOBAL ECOLOGY AND CONSERVATION,22,e01035.
MLA Jiang, Zhijian,et al."Historical changes in seagrass beds in a rapidly urbanizing area of Guangdong Province: Implications for conservation and management".GLOBAL ECOLOGY AND CONSERVATION 22(2020):e01035.

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来源：南海海洋研究所

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