Estimates of discarding by Newfoundland offshore vessels in 1981 / by David W. Kulka. : Fs70-8/82-34E-PDF

"Discarded fish generally go unrecorded in official statistics. Using direct observations at sea by observers, estimates of the amounts of discarding in the various domestic Newfoundland offshore fisheries were examined to pinpoint problem areas. In all cases, estimates of discards did not exceed 10% except for bycatch of turbot and redfish juveniles in the shrimp fishery. The estimates presented should be regarded strictly as minimum values because of the enforcement aspects of the observers' job. The presence of observers tended to deter or reduce discarding. Highest estimates of discards were seen in the 3NO cod fishery (7.5%), 3LNO American plaice (4.6%), 3LNO yellowtail (4.2%), wolfish (28% overall) and skate (99%). Most of the fish discarded were small which meant that larger numbers per unit weight were thrown back. Indications are that the problem may be more intense in the absence of observers."

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Renseignements sur la publication
Ministère/Organisme Canada. Department of Fisheries and Oceans.
Titre Estimates of discarding by Newfoundland offshore vessels in 1981 / by David W. Kulka.
Titre de la série CAFSAC research document ; 82/34
Type de publication Série - Voir l'enregistrement principal
Langue [Anglais]
Format Électronique
Document électronique
Note(s) Caption title.
Digitized edtion from print [produced by Department of Fisheries and Oceans].
"Not to be cited without permission of the author."
Includes bibliographical references (page 5).
Includes abstract in French.
Information sur la publication St. John's, Newfoundland : Department of Fisheries and Oceans,[1982].
Auteur / Contributeur Kulka, David W., author.
Description 1 online resource (22 pages).
Numéro de catalogue
  • Fs70-8/82-34E-PDF
Descripteurs Fisheries
Salt water fish
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