Abstract：
Dolphin preference and usage of various habitats along the Israeli shallow coastal shelf were investigated between 2019 and 2021 with passive acoustic monitoring devices. A hurdle model was used to examine the dolphins\' visiting probability (chance of detection) and visit duration (length of stay once detected) across habitats, with diel cycle and season as explanatory variables. The influence of spatiotemporal prohibitions placed on trawler activity was also examined. It was found that dolphins exhibited higher presence in the vicinity of fish farms, up to three orders of magnitude, and even more so during periods when trawler activity was halted. The study also found a higher presence during the winter season and nighttime. Modeling did not find significant differences in the visiting probability or the visit duration between any non-farm-associated sites, including areas where trawling is prohibited. Further restrictions on the fishing industry may induce recovery of the benthic ecosystem and lower competition for resources, thus promoting higher dolphin presence in natural habitats along the shelf.
摘要：
在2019年至2021年之间，使用无源声学监测设备调查了海豚的偏好和以色列浅层沿海陆架上各种栖息地的使用情况。使用障碍模型来检查海豚在栖息地的访问概率（检测机会）和访问持续时间（一旦检测到的停留时间），以迪尔周期和季节为解释变量。还研究了时空禁止对拖网渔船活动的影响。发现海豚在养鱼场附近表现出更高的存在，高达三个数量级，在拖网渔船活动停止期间更是如此。该研究还发现，在冬季和夜间，存在更高。建模没有发现任何非农场相关站点之间的访问概率或访问持续时间的显着差异，包括禁止拖网的地区。对捕鱼业的进一步限制可能会导致底栖生态系统的恢复和资源竞争的减少，从而促进了海豚在架子上自然栖息地的存在。
