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

IRD

Publications des scientifiques de l'IRD

Fu C. H., Travers-Trolet M., Velez L., Gruss A., Bundy A., Shannon L. J., Fulton E. A., Akoglu E., Houle J. E., Coll Marta, Verley Philippe, Heymans J. J., John E., Shin Yunne-Jai. (2018). Risky business : the combined effects of fishing and changes in primary productivity on fish communities. Ecological Modelling, 368, 265-276. ISSN 0304-3800

Fichier PDF disponible http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-02/010072322.pdf

Lien direct chez l'éditeur doi:10.1016/j.ecolmodel.2017.12.003

Titre
Risky business : the combined effects of fishing and changes in primary productivity on fish communities
Année de publication2018
Type de documentArticle référencé dans le Web of Science WOS:000424187200024
AuteursFu C. H., Travers-Trolet M., Velez L., Gruss A., Bundy A., Shannon L. J., Fulton E. A., Akoglu E., Houle J. E., Coll Marta, Verley Philippe, Heymans J. J., John E., Shin Yunne-Jai.
SourceEcological Modelling, 2018, 368, p. 265-276. ISSN 0304-3800
RésuméThere is an increasing need to understand ecosystem responses to multiple stressors in that such complex responses depend not only on species-level responses, but also on species interactions and ecosystem structure. In this study, we used a multi-model ecosystem simulation approach to explore the combined effects of fishing and primary productivity on different components of the food-web across a suite of ecosystems and a range of model types. Simulations were carried out under different levels of primary productivity and various fishing scenarios. In addition to exploring synergistic, additive or antagonistic combined effects of multiple stressors, we included a fourth category "dampened", which refers to less negative or less positive impacts compared to additive ones, and in contrast to previous studies, we explicitly considered the direction (positive or negative) of the combined effects. We focused on two specific combined effects (negative synergism and positive dampened) associated with the risk of resultant lower fish biomass than expected under additive effects. Through a meta-analysis of the multi models' simulation results, we found that (i) the risk of negative synergism was generally higher for low-trophic-level (LTL) taxa, implying that following an increase of fishing pressure on a given LTL stock, the subsequent decrease of biomass under low primary productivity would be larger than expected under additive effects and (ii) the risk of positive dampened effects was generally higher for high-trophic-level (HTL) taxa, implying that given a management measure aimed at reducing the impact of fishing on HTL stocks, the subsequent rebuilding of these stocks would be slower than expected. Our approach to categorizing and exploring cumulative effects can be applied to evaluate other community properties, and provide guidance for fisheries management.
Plan de classementRessources halieutiques [040] ; Ecologie, systèmes aquatiques [036] ; Sciences fondamentales / Techniques d'analyse et de recherche [020]
Descr. géo.MEDITERRANEE ; ATLANTIQUE NORD OUEST ; MER DU NORD ; MER NOIRE ; PACIFIQUE SUD OUEST ; PACIFIQUE NORD EST ; GOLFE DU MEXIQUE OUEST ; BENGUELA
LocalisationFonds IRD [F B010072322]
Identifiant IRDfdi:010072322
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010072322

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)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito