Examining the effect of intensive seismic surveys on abundance and behaviour of groundfish species along a continental slope of Newfoundland and Labrador, Canada

IF 5.3 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin Pub Date : 2025-03-31 DOI:10.1016/j.marpolbul.2025.117889

Khanh Q. Nguyen , Jacqueline M. Hanlon , Bruce S. Martin , Pablo Borys , Dustin Schornagel , Corey J. Morris

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Abstract

This study investigated changes in the abundance and behaviour of groundfish species at a relatively deep-water site along the eastern continental slope of Canada, when exposed to a commercial seismic survey that lasted 100 consecutive days. Baited cameras were deployed at control and impact sites, before and after seismic exposure, consisting of 323, 5-h long, videos. Changes in abundance were not explained by seismic surveying noise for any of the five commonly observed fish species. However, Atlantic cod were found to have significantly longer arrival-times to baited camera stations and it took longer for available bait to be consumed immediately after seismic surveying occurred. This effect occurred when fish were exposed to a daily mean sound pressure level >120 dB re 1 μPa² prior to the experimental measurements. The study contributes towards a better ecological understating of noise-related impacts over a wide range of conditions where groundfish occur.

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来源期刊

Marine pollution bulletin 环境科学-海洋与淡水生物学

CiteScore

10.20

自引率

15.50%

发文量

1077

审稿时长

68 days

期刊介绍： Marine Pollution Bulletin is concerned with the rational use of maritime and marine resources in estuaries, the seas and oceans, as well as with documenting marine pollution and introducing new forms of measurement and analysis. A wide range of topics are discussed as news, comment, reviews and research reports, not only on effluent disposal and pollution control, but also on the management, economic aspects and protection of the marine environment in general.