Modelling the effects of fishing on the biomass of the world's oceans from 1950 to 2006

Laura Tremblay-Boyer 1, 2 Didier Gascuel 1, * Reg Watson 2 Villy Christensen 2 Daniel Pauly 2
* Auteur correspondant
1 ESE - Écologie et santé des écosystèmes
2 Fisheries Centre, Aquatic Ecosystem Resource Laboratory
Abstract : Marine fisheries have endured for centuries but the last 50 yr have seen a drastic increase in their reach and intensity. We generated global estimates of biomass for marine ecosystems and evaluated the effects that fisheries have had on ocean biomass since the 1950s. A simple and versatile ecosystem model was used to represent ecosystems as a function of energy fluxes through trophic levels (TLs). Using primary production, sea surface temperature, transfer efficiency, fisheries catch and TL of species, the model was applied on a half-degree spatial grid covering all oceans. Estimates of biomass by TLs were derived for marine ecosystems in an unexploited state, as well as for all decades since the 1950s. Trends in the decline of marine biomass from the unexploited state were analyzed with a special emphasis on predator species as they are highly vulnerable to overexploitation. This study highlights 3 main trends in the global effects of fishing: (1) predators are more affected than organisms at lower TLs
Type de document :
Article dans une revue
Marine Ecology Progress Series, Inter-Research, 2011, 442, pp.169-185. 〈10.3354/meps09375〉
Liste complète des métadonnées

Littérature citée [53 références]  Voir  Masquer  Télécharger
https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-00808031
Contributeur : Catherine Cliquet <>
Soumis le : mardi 16 avril 2013 - 15:52:05
Dernière modification le : mardi 29 mai 2018 - 16:20:02
Document(s) archivé(s) le : lundi 3 avril 2017 - 00:01:51

Fichier

Tremblay-boyer_2011.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

UNAM | AGROCAMPUS-OUEST | UMR-ESE-AGROCAMPUS-OUEST | INRA

Citation

Laura Tremblay-Boyer, Didier Gascuel, Reg Watson, Villy Christensen, Daniel Pauly. Modelling the effects of fishing on the biomass of the world's oceans from 1950 to 2006. Marine Ecology Progress Series, Inter-Research, 2011, 442, pp.169-185. 〈10.3354/meps09375〉. 〈hal-00808031〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

384

Téléchargements de fichiers

247

CONTACT : publication@agrocampus-ouest.fr