首页|Vulnerability and Conservation of Nearshore Cetaceans to Increasing Vessel Traffic:The Indo-Pacific Humpback Dolphin in the South China Sea

Vulnerability and Conservation of Nearshore Cetaceans to Increasing Vessel Traffic:The Indo-Pacific Humpback Dolphin in the South China Sea

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A comprehensive risk assessment to evaluate the vulnerability of the nearshore cetaceans to increasing marine traffic is lacking.In this study,the risk to Indo-Pacific humpback dolphins(Sousa chinensis)in the main habitats in China was assessed based on a semiquantitative spatial vulnerability analysis.85%of the(sub)population which overlapped with the lanes of ferries and/or cargo vessels,with exposure scores of 1.23±0.31(calculated based on the proportion of sea routes that overlap the dolphin's range).A combination of high exposure to the sea routes and sensitivity to marine traffic would render the(sub)populations to be highly vulnerable(EPRE:5.21 and XM:4.47).A low frequency of vessels and an awareness of the ecology assures a low vulnerability(SH:2.43,EZ:2.73).Uncertainty scores were commonly lower for the higher vulnerable populations,and higher for the lower vulnerable populations,suggesting additional field data and more monitoring are necessary.Six years of field data have been used to analyze the influences of various types of marine traffic on humpback dolphin behavior.Fishing and non-fishing vessels were significantly dif-ferent(χ 2=65.19,p<0.01).The humpback dolphins were attracted by fishing vessels(83.1%)but avoided non-fishing vessels(95.2%).We recommend a management with seasonal and geographical constraints,to balance economic development and environ-mental conservation.

Indo-Pacific humpback dolphinvessel impactsrisk analysisprotection strategy

LUO Dingyu、GUO Lang、HUANG Nuoyan、WANG Hongri、ZENG Chen、TANG Xikai、XU Zhuo、WU Yuping、SUN Xian

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School of Marine Sciences,Zhuhai Key Laboratory of Marine Bioresources and Environment,Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering,Pearl River Estuary Marine Ecosystem Research Sta-tion,Ministry of Education,Sun Yat-Sen University

Southern Marine Science and Engineering Guangdong Labora-tory(Zhuhai),Zhuhai 519082,China

National Key Research and Development Program of ChinaGuangdong Basic and Applied Basic Research Foundation in ChinaSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai),ChinaSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai),ChinaNational Natural Science Foundation of China71st batch of China Postdoctoral Science Funding

2022 YFF13016032021A151501146731102000331102 1004322012902022M713560

2024

10.1007/s11802-024-5693-y

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCD
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2024.23(4)