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Effect of beach erosion and typhoon on green turtle nesting grounds and implications for conservation management at Xisha Islands, South China Sea
编号：532 访问权限：仅限参会人 更新：2024-10-12 11:13:57 浏览：185次 张贴报告

报告开始：2025年01月15日 18:05（Asia/Shanghai）

报告时间：15min

所在会场：[S72] Session 72-Sea Turtle and Marine Mammal Conservation: Management, Academic and Outreach Perspectives [S72-P] Sea Turtle and Marine Mammal Conservation: Management, Academic and Outreach Perspectives

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摘要
Sea turtles are ideal flagship and umbrella species for marine biodiversity conservation. The quality of nesting grounds is crucial for the successful reproduction of sea turtles, determining whether they can successfully nest and hatch. Xisha Islands represent the largest remaining nesting grounds for green turtles in China, but face numerous threats and lack management guidelines for nesting ground restoration. From 2019 to 2022, this study continuously monitored the beach changes and coastal erosion in North Island of Xisha Islands. Results show that from 2020 to 2022, the beach area of North Island decreased annually by 11,840 m2. The proportion of suitable nesting sand types (including coarse and medium sands) also decreased annually. The peak nesting period of green turtles on North Island coincides with the high occurrence of typhoons in South China Sea, causing tidal surges that inundate green turtle nests and result in an average nest loss rate of 35.25%. Based on the above threats, it is recommended to promptly initiate habitat restoration in severely eroded areas of green turtle nesting grounds, to prevent further declines in nesting area and quality, and to implement measures such as nest relocation to enhance green turtle reproductive success.
 
关键词
Beach erosion; Green turtle; Hatching success; Island morphology changes; Nesting ground
报告人
Ting Zhang
PhD Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology

稿件作者
Ting Zhang Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Chenglong Zhang Marine Protected Area Administration of Sansha City；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Yupei Li Marine Protected Area Administration of Sansha City；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Yangfei Yu Marine Protected Area Administration of Sansha City；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Xiaoyu An Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Yongkang Jiang Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Jichao Wang Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Liu Lin Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
Haitao Shi Hainan Normal University；Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology
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重要日期

  • 会议日期

    01月13日

    2025

    至

    01月17日

    2025

  • 09月27日 2024

    初稿截稿日期

  • 01月17日 2025

    注册截止日期

主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
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