期刊
MARINE POLLUTION BULLETIN
卷 83, 期 1, 页码 165-180出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.03.056
关键词
Sonar; Pilot-whales; Marine mammals; Noise; Dose-response
资金
- US Office of Naval Research (ONR)
- Royal Norwegian Navy
- Norwegian Ministry of Defence
- Netherlands Ministry of Defence
- WWF Norway
- MASTS pooling initiative (The Marine Alliance for Science and Technology for Scotland)
- Scottish Funding Council [HR09011]
- VSB Foundation [VSB.08/228-E]
- Natural Environment Research Council [1104608, smru10001] Funding Source: researchfish
The potential effects of exposing marine mammals to military sonar is a current concern. Dose-response relationships are useful for predicting potential environmental impacts of specific operations. To reveal behavioral response thresholds of exposure to sonar, we conducted 18 exposure/control approaches to 6 long-finned pilot whales. Source level and proximity of sonar transmitting one of two frequency bands (1-2 kHz and 6-7 kHz) were increased during exposure sessions. The 2-dimensional movement tracks were analyzed using a changepoint method to identify the avoidance response thresholds which were used to estimate dose-response relationships. No support for an effect of sonar frequency or previous exposures on the probability of response was found. Estimated response thresholds at which 50% of population show avoidance (SPLmax = 170 dB re 1 mu Pa, SELcum = 173 dB re 1 mu Pa-2 S) were higher than previously found for other cetaceans. The US Navy currently uses a generic dose-response relationship to predict the responses of cetaceans to naval active sonar, which has been found to underestimate behavioural impacts on killer whales and beaked whales. The navy curve appears to match more closely our results with long-finned pilot whales, though it might underestimate the probability of avoidance for pilot-whales at long distances from sonar sources. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据