Fish are attracted to vessels | Zendy

Anders Røstad | Zendy; Stein Kaartvedt | Zendy; Thor A. Klevjer | Zendy; Webjørn Melle | Zendy

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Fish are attracted to vessels

Author(s) -

Anders Røstad,

Stein Kaartvedt,

Thor A. Klevjer,

Webjørn Melle

Publication year - 2006

Publication title -

ices journal of marine science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 117

eISSN - 1095-9289

pISSN - 1054-3139

DOI - 10.1016/j.icesjms.2006.03.026

Subject(s) - fish <actinopterygii> , fjord , fishery , abundance (ecology) , environmental science , oceanography , noise (video) , biology , geology , artificial intelligence , computer science , image (mathematics)

Rostad,A.,Kaartvedt,S.,Klevjer,T.A.,andMelle,W.2006.Fishareattractedtovessels.eICES Journal of Marine Science, 63: 1431e1437.Fish rapidly accumulated below research vessels (RVs) at anchor, kept stationary by dy-namic satellite positioning, or freely drifting. This happened by day and night, beneath ves-sels with dierent noise levels, in fjords and the open ocean, comprised dierent speciesassemblages of sh, and spanned depths of several hundred metres. Acoustic backscatter(sh abundance) increased by more than an order of magnitude in less than an hour. Oneof the study sites was characterized by much ship trac, and intermittent, strong decreasesin the local sh aggregation beneath the RV were caused by sh swimming towards passingcommercial vessels, before returning to the stationary RV. The study suggests more com-plex relationships between sh, vessels, and noise than previously anticipated. If sh arecommonly attracted to vessels, this has implications for sh abundance estimates and basicecological research.

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