Prevention of By-Catch of Small Cetaceans in Pelagic Trawls by Technical Means (CETA-SEL)
Overview
| Title: | Prevention of By-Catch of Small Cetaceans in Pelagic Trawls by Technical Means (CETA-SEL) |
| Duration: | Three years |
| Sponsor: | European Commission AIR-III Programme, AIR-CT94-2423 |
| Keywords: | cetacean, by-catch, pelagic trawl, acoustic deterrent, tracking, mitigation |
Abstract
This project is to investigate the behaviour of small cetaceans around a commercial pelagic trawl operating in deep water at the continental shelf edge in order to develop methods of reducing the by-catch of these species. Sea trials in the Atlantic, off south west Ireland, and in the northern North Sea have been carried out using the Dutch research vessel FRV Tridens in order to test a newly developed 3D sparse array hydrophone tracking system. The tracking system records the underwater vocalisations of these animals to unobtrusively determine their position as they manoeuvre around the fishing gear. This project is believed to be the first of its kind, i.e. having the capability of tracking in a hostile fishing environment in deep water, typically 100 metres deep. The tracking is done in a moving time frame and the technique has the capability of real time operation.
People
Mr David Goodson
Dr Paul Connelly
Dr Paul Lepper
Dr Russell Coggrave
Emeritus Professor Bryan Woodward
Collaboration with Dr Klaus Lucke
Partners
RIVO-DLO Netherlands Institute of Fisheries Research (coordinator)
IFREMER (France)
LU (UK)
HMMP Harderwijk Marine Mammal Park (Netherlands)
KOL Komradens Djurpark (Sweden)
DIFTA Danish Institute of Fisheries Technology and Aquiculture (Denmark)
RIKZ National Institute of Coastal and Marine Management (Netherlands)
Publications
Kaschner K., Lepper P. A. and Goodson A. D.
Analysis of Cetacean sounds obtained from a hydrophone attached to a pelagic trawl;
11th Annual Conference of the European Cetacean Society, Stralsund, Germany, in European Research on Cetaceans – 11, Edited by Evans P, Parson E and Clark S, published: Kiel University, pp. 26-29, 1997.
Connelly P., Woodward B. Goodson A. D., Lepper P. A. and Newborough D.
Remote sensing methods for cetacean interactions with pelagic trawl fishing gear;
11th Annual Conference of the European Cetacean Society, Stralsund, Germany, in European Research on Cetaceans – 11, Edited by Evans P, Parson E and Clark S, published: Kiel University, pp. 23-25, 1997.
Goodson A. D., Amundin M., Mayo R. H., Newborough D., Lepper P. A., Lockyer C., Larsen F. and Blomquist C.
Aversive sounds and sound pressure levels for the Harbour Porpoise (Phocoena phocoena): An initial field study;
Annual Science Conference of the International Council for Exploration of the Sea, Baltimore, USA, pp. 5, 1997.
Goodson A. D., Connelly P. R. and Lepper P. A.
Aversive sounds and the Harbour Porpoise (Phocoena phocoena);
International BioAcoustics Council XV IBAC, October 1996, University of Pavia, Pavia, Italy, pp. 15, 1996.
Coggrave C. R., Goodson A. D., Lepper P. A. and Woodward B.
An experimental technique for tracking dolphins in the vicinity of a trawl net;
Proceedings Acoustics Society India Silver Jubilee National Symposium on Acoustics(NSA-95), 21-23 December 1995, New Delhi, India; in journal of the Acoustical Society of India, Vol. XXIII, No 4, pp. 194-198, 1995.
Mayo R. H., Goodson A. D., Klinowska M., Sturtivant C. R. and Lepper P. A.
Tracking cetaceans by sonar click detection;
9th Annual Conference of the European Cetacean Society, Lugano, Switzerland, in European Research on Cetaceans – 9, Edited by Evans P G H and Nice H, 1995.
Mayo R. H., Goodson A. D., Klinowska M., Sturtivant C. R. and Lepper P. A.
The use of a drilling rig in tracking the Harbour Porpoise (Phocoena phocoena);
9th Annual Conference of the European Cetacean Society, Lugano, Switzerland, in European Research on Cetaceans – 9, Edited by Evans P G H and Nice H, pp. 92-95, 1995.
Mayo R. H., Klinowska M., Goodson A. D., Sturtivant C. R. and Lepper P. A.
Surfacing behaviour of the Harbour Porpoise (Phocoena phocoena);