Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

 

Publications des scientifiques de l'IRD

Ruiz J., Batty A., Chavance Pierre, McElderry H., Restrepo V., Sharples P., Santos J., Urtizberea A. (2015). Electronic monitoring trials on in the tropical tuna purse-seine fishery. Ices Journal of Marine Science, 72 (4), 1201-1213. ISSN 1054-3139

Accès réservé (Intranet IRD) Demander le PDF

Lien direct chez l'éditeur doi:10.1093/icesjms/fsu224

Titre
Electronic monitoring trials on in the tropical tuna purse-seine fishery
Année de publication2015
Type de documentArticle référencé dans le Web of Science WOS:000356232900008
AuteursRuiz J., Batty A., Chavance Pierre, McElderry H., Restrepo V., Sharples P., Santos J., Urtizberea A.
SourceIces Journal of Marine Science, 2015, 72 (4), p. 1201-1213. ISSN 1054-3139
RésuméThe difficulty of ensuring adequate statistical coverage of whole fleets is a challenge for the implementation of observer programmes and may reduce the usefulness of the data they obtain for management purposes. This makes it necessary to find cost-effective alternatives. Electronic monitoring (EM) systems are being used in some fisheries as an alternative or a complement to human observers. The objective of this study was to test the use and reliability of EM on the tropical tuna purse-seine fishery. To achieve this objective, seven trips of tuna purse seiners operating in the three Oceans were closely monitored to compare the information provided by EM and on-board observers to determine if EM can reliably document fishing effort, set type, tuna catch, and bycatch. Total tuna catch per set was not significantly different between EM and observer datasets; however, regarding species composition, only main species matched between EM and observers. Success on set-type identification using EM varied between 98.3 and 56.3%, depending on the camera placement. Overall, bycatch species were underestimated by EM, but large bodied species, such as billfishes, were well documented. The analyses in this study showed that EM can be used to determine the fishing effort (number of sets) and total tuna catch as reliably as observers can. Set-type identification also had very promising results, but indicated that refinement of the methods is still needed. To be fully comparable with observer data, improvements for accurately estimating the bycatch will need to be developed in the application and use of the EM system. Operational aspects that need to be improved for an EM programme to be implemented include standardizing installation and on-board catch handling methodology as well as improvements in video technology deployment.
Plan de classementRessources halieutiques [040] ; Télédétection [126] ; Informatique [122]
Descr. géo.OCEAN INDIEN ; ATLANTIQUE ; PACIFIQUE OUEST
LocalisationFonds IRD [F B010064696]
Identifiant IRDfdi:010064696
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010064696

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Le FDI est labellisé CollEx

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Cayenne

Nouméa

Papeete

Abidjan

Dakar

Niamey

Ouagadougou

Tunis

La Paz

Quito