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

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

机构地区：[1]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

出　　处：《Journal of Ocean University of China》2024年第4期1003-1014,共12页中国海洋大学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China (No.2022 YFF1301603);the Guangdong Basic and Applied Basic Research Foundation (No.2021A1515011467)in China;the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),China (Nos.311020003 and 311021004);the National Natural Science Foundation of China (No.32201290);the 71st batch of China Postdoctoral Science Funding (No.2022M713560)。

摘　　要：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 different(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 environmental conservation.

关 键 词：Indo-Pacific humpback dolphin vessel impacts risk analysis protection strategy 

分 类 号：U698[交通运输工程—港口、海岸及近海工程] Q958.8[交通运输工程—船舶与海洋工程]