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

IRD

 

Publications des scientifiques de l'IRD

Corrales X., Coll Marta, Tecchio S., Bellido J.M., Fernandez A.M., Palomera I. (2015). Ecosystem structure and fishing impacts in the northwestern Mediterranean Sea using a food web model within a comparative approach. Journal of Marine Systems, 148, 183-199. ISSN 0924-7963

Accès réservé (Intranet IRD) Demander le PDF

Lien direct chez l'éditeur doi:10.1016/j.jmarsys.2015.03.006

Titre
Ecosystem structure and fishing impacts in the northwestern Mediterranean Sea using a food web model within a comparative approach
Année de publication2015
Type de documentArticle
AuteursCorrales X., Coll Marta, Tecchio S., Bellido J.M., Fernandez A.M., Palomera I.
SourceJournal of Marine Systems, 2015, 148, p. 183-199. ISSN 0924-7963
RésuméWe developed an ecological model to characterize the structure and functioning of the marine continental shelf and slope area of the northwestern Mediterranean Sea, from Toulon to Cape La Nao (NWM model), in the early 2000s. The model included previously modeled areas in the NW Mediterranean (the Gulf of Lions and the Southern Catalan Sea) and expanded their ranges, covering 45,547 km(2), with depths from 0 to 1000 in. The study area was chosen to specifically account for the connectivity between the areas and shared fish stocks and fleets. Input data were based on local scientific surveys and fishing statistics, published data on stomach content analyses, and the application of empirical equations to estimate consumption and production rates. The model was composed of 54 functional groups, from primary producers to top predators, and Spanish and French fishing fleets were considered. Results were analyzed using ecological indicators and compared with outputs from ecosystem models developed in the Mediterranean Sea and the Gulf of Cadiz prior to this study. Results showed that the main trophic flows were associated with detritus, phytoplankton, zooplankton and benthic invertebrates. Several high trophic level organisms (such as dolphins, benthopelagic cephalopods, large demersal fishes from the continental shelf, and other large pelagic fishes), and the herbivorous salema fish, were identified as keystone groups within the ecosystem. Results confirmed that fishing impact was high and widespread throughout the food web. The comparative approach highlighted that, despite productivity differences, the ecosystems shared common features in structure and functioning traits such as the important role of detritus, the dominance of the pelagic fraction in terms of flows and the importance of benthic pelagic coupling.
Plan de classementPêches [040PECHE] ; Milieu marin [036MILMAR]
DescripteursPECHE ; MILIEU MARIN ; FONCTIONNEMENT DE L'ECOSYSTEME ; STRUCTURE TROPHIQUE ; NIVEAU TROPHIQUE ; INDICATEUR ECOLOGIQUE ; CAPTURE ; BIOMASSE ; MODELISATION
Descr. géo.MEDITERRANEE ; FRANCE ; ESPAGNE ; LION GOLFE
LocalisationFonds IRD [F B010063848]
Identifiant IRDfdi:010063848
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010063848

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