Improved Baited Remote Underwater Video (BRUV) for 24 h Real-Time Monitoring of Pelagic and Demersal Marine Species from the Epipelagic Zone

Bait-based remote underwater video (BRUV) systems are effective devices for remotely observing fish and other marine organisms in challenging environments. The development of a long duration (24 h) surface BRUV observation surveys allowed the monitoring of scarce and elusive pelagic sharks and the d...

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Bibliographic Details
Published in:Journal of marine science and engineering Vol. 11; no. 6; p. 1182
Main Authors: Prat-Varela, Alejandro, Torres, Agusti, Cervantes, Daniel, Aquino-Baleytó, Marc, Abril, Ana-Maria, Clua, Eric E. G.
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.06.2023
Subjects:
Baits
blue shark Prionace glauca
BRUV
Cameras
Deep sea
Deep water
demersal species
Environmental awareness
Epipelagic zone
Euphotic zone
Fish
Fisheries
Fishing
Global positioning systems
GPS
Hexanchus griseus
Longline fishing
Longlining (Fisheries)
Males
Marine fish
Marine fishes
Marine organisms
Monitoring
Pelagic fisheries
pelagic species
Real time
real-time observation
remote
Remote observing
Sharks
Smartphones
Sport fishing
Storage capacity
Storage conditions
Surveillance
Surveillance equipment
Surveillance systems
Surveys
System effectiveness
Underwater
Video data
Video recorders
Mediterranean Sea
Spain
Majorca
ISSN:2077-1312, 2077-1312
Online Access:Get full text
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Summary:Bait-based remote underwater video (BRUV) systems are effective devices for remotely observing fish and other marine organisms in challenging environments. The development of a long duration (24 h) surface BRUV observation surveys allowed the monitoring of scarce and elusive pelagic sharks and the direct impact on non-targeted species of longline fishing in the Western Mediterranean. Technological limitations, such as the limited storage capacity and a single surface camera, were improved by (i) adding a deep camera equipped with light (below 80 m depth) and (ii) replacing Gopros with a multi-camera video surveillance system (surface and depth) with a storage capacity of several days and access to real-time observation. Based on a deployment effort of 1884 h video data, we identified 11 blue sharks (Prionace glauca) and one bluntnose sixgill shark (Hexanchus griseus), a deep-sea species that scarcely swims at the surface. The real-time observation capability was a powerful tool for reducing logistical costs and for raising environmental awareness in educational and outreach programmes.
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ISSN:2077-1312
2077-1312
DOI:10.3390/jmse11061182