Groupe de Recherche sur les Cétacés, BP 715 - 06633 Antibes cedex, France.
Groupe de Recherche sur les Cétacés, BP 715 - 06633 Antibes cedex, France.
Mar Pollut Bull. 2022 Dec;185(Pt A):114222. doi: 10.1016/j.marpolbul.2022.114222. Epub 2022 Nov 2.
Striped dolphin (Stenella coeruleoalba) is the most abundant cetacean species in the western Mediterranean Sea. Coastal populations are locally exposed to intense recreational boating, a growing activity over the last thirty years. Dedicated boat surveys carried out since 1988 (13,896 km of effort), enabled to map relative abundance for two periods, 1988-2003 and 2004-2019, which evidenced a significant decrease of habitat use in the inshore part of study area. Coastal traffic was surveyed from a shore lookout located in Cap d'Antibes (French Riviera) during 47 daily sessions from May 2017 to April 2018: traffic flow often exceeded one boat per minute in summer, with a majority of motorboats. Underwater recordings showed that inshore noise was about 10 dB higher than in the open sea, with much energy being propagated by fast boats, including in the medium to high frequency domain. Ambient noise data collected during spring 2020 lockdown evidenced a clear noise level decrease compared to normal situations. Although other stressors may not be neglected, this study suggested that intense motorboat traffic is a likely contributor to the observed striped dolphin partial habitat loss.
条纹海豚（Stenella coeruleoalba）是地中海西部最丰富的鲸目动物物种。沿海种群局部面临着强烈的休闲划船活动的影响，这种活动在过去三十年中不断增加。自 1988 年以来（13896 公里的努力），专门进行了船只调查，这使得我们能够在两个时期（1988-2003 年和 2004-2019 年）绘制相对丰度图，这表明研究区域近岸部分的栖息地利用显著减少。2017 年 5 月至 2018 年 4 月期间，在法国里维埃拉的昂蒂布海角（Cap d'Antibes）的一个岸边观察点进行了 47 天的日常船只流量调查：夏季，船只流量往往每分钟超过一艘，其中大多数是机动船。水下录音显示，近岸噪声比开阔海域高约 10 分贝，快速船只传播的能量很大，包括中高频域。2020 年春季封锁期间收集的环境噪声数据表明，与正常情况相比，噪声水平明显下降。尽管不能忽视其他压力因素，但本研究表明，强烈的机动船交通可能是导致观察到的条纹海豚部分栖息地丧失的一个原因。
