Multi-year passive acoustic monitoring of coastal dolphins along the Israeli Mediterranean shallow shelf reveals the impact of marine fish farms and trawling patterns on their habitat utilization

被引：0

作者：

Zuriel, Y. E. ^{[1
]}

Avshalom, N. Levi ^{[1
]}

van Rijn, I. ^{[1
]}

Livne, L. ^{[1
]}

Galili, O. ^{[1
]}

Tchernov, D. ^{[1
]}

Scheinin, A. P. ^{[1
]}

Kerem, D. ^{[1
]}

机构：

[1] Univ Haifa, Leon H Charney Sch Marine Sci, Dept Marine Biol, Morris Kahn Marine Res Stn, Haifa, Israel

来源：

MARINE ENVIRONMENTAL RESEARCH | 2023年 / 188卷

关键词：

Acoustic monitoring; Tursiops truncatus; Delphinus delphis; Levantine Basin; Fish farms; Habitat use; Bottom trawlers; BOTTLE-NOSED DOLPHINS; PORPOISES PHOCOENA-PHOCOENA; TURSIOPS-TRUNCATUS; WILD FISH; SEA; AQUACULTURE; RESOURCE; RATES; BAY;

D O I：

10.1016/j.marenvres.2023.106014

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Dolphin preference and usage of various habitats along the Israeli shallow coastal shelf were investigated be-tween 2019 and 2021 with passive acoustic monitoring devices. A hurdle model was used to examine the dol-phins' 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.

引用

页数：18