Comparison between ROV video and Agassiz trawl methods for sampling deep water fauna of submarine canyons in the Northwestern Mediterranean Sea with observations on behavioural reactions of target species
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- 作者：A. Aymaa ; b ; aaymap@ub.edu" class="auth_mail" title="E-mail the corresponding author ; J. Aguzzib ; jaguzzi@cmima.csic.es" class="auth_mail" title="E-mail the corresponding author ; M. Canalsa ; G. Lastrasa ; N. Bahamonc ; A. Mechob ; J.B. Companyb
- 关键词：Animal behaviour ; Submarine canyon ; Deep-sea ; Northwestern Mediterranean Sea ; ROV observations ; Agassiz trawl
- 刊名：Deep Sea Research Part I: Oceanographic Research Papers
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：114
- 期：Complete
- 页码：149-159
- 全文大小：2707 K
文摘
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A comparison between Remotely Operated Vehicle (ROV) and Agassiz trawling methods is presented.
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The behaviour of deep-sea fishes and invertebrates of the Northwestern Mediterranean submarine canyons was studied by ROV imaging.
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The comparison between ROV sampling efficiency and Agassiz trawling highlighted that fish captures were 20 times higher with the ROV, with a lower efficiency for epibenthic invertebrates.
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Ethological observations for fishes showed minor response to the ROV presence and new insights on decapods behaviour were obtained.
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ROV surveying is an efficient technique to assess abundance and species composition in deep-sea waters for these motile species and questions trawl-based estimations.