FN Archimer Export Format
PT J
TI Structure and functioning of the Bay of Biscay ecosystem: A trophic modelling approach
BT 
AF Corrales, X.
   Preciado, I.
   Gascuel, D.
   Lopez de Gamiz-Zearra, A.
   Hernvann, P.-Y.
   Mugerza, E.
   Louzao, M.
   Velasco, F.
   DORAY, Mathieu
   López-López, L.
   Carrera, P.
   Cotano, U.
   Andonegi, E.
AS 1:1;2:2;3:3;4:1;5:3,4,5;6:1;7:1;8:2;9:6;10:7;11:8;12:1;13:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:PDG-RBE-HALGO-EMH;10:;11:;12:;13:;
C1 AZTI, Marine Research Division, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea z/g, 48395, Sukarrieta, Spain
   Instituto Español de Oceanografía, Centro Oceanográfico de Santander, Promontorio San Martín s/n, 39004, Santander, Spain
   ESE, Ecology and Ecosystem Health, Institut Agro, Inrae, 35042, Rennes, France
   Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, CA, USA
   IFREMER, STH, F-56100, Lorient, France
   IFREMER, EMH, F-44300, Nantes, France
   Instituto Español de Oceanografía, Centre Oceanogràfic de Balears, Moll de Ponent s/n, 07015, Palma, Spain
   Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, Subida Radio Faro, 50, 36390, Vigo, Spain
C2 AZTI, SPAIN
   IEO, SPAIN
   INRAE, FRANCE
   UNIV CALIF SANTA CRUZ, USA
   IFREMER, FRANCE
   IFREMER, FRANCE
   IEO, SPAIN
   IEO, SPAIN
SI NANTES
SE PDG-RBE-HALGO-EMH
UM DECOD
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-p187
   copubli-europe
   copubli-int-hors-europe
IF 2.8
TC 11
UR https://archimer.ifremer.fr/doc/00736/84785/89808.pdf
LA English
DT Article
CR EVHOE EVALUATION HALIEUTIQUE OUEST DE L'EUROPE
   PELACUS
   PELGAS
DE ;Ecopath model;Food-web model;Ecosystem-based management;Fishing impacts;Bay of Biscay
AB Characterizing the structure and functioning of marine ecosystems requires a deep understanding of the dynamics of its populations and the biotic interactions among them. To this end, we developed a mass-balanced food-web model of a regional sea in the Northeast Atlantic, the Bay of Biscay (BoB), considering one of the most important anthropogenic disturbance in the area, the fishing pressure. The food-web model was performed for the whole BoB region for the first time. The model represents the ecosystems in the early 2000s, encompassing 120433 km2 between 0 and 1000 m depth. The model was composed of 52 functional groups, ranging from primary producers to top predators, and considering both Spanish and French fishing fleets. Input data included biomass obtained locally from bottom trawl and acoustic surveys, data from stock assessment, official fishery statistics, published and unpublished data on stomach content analyses and the use of empirical equations to estimate consumption and production rates. Our results highlight the importance of the pelagic domain, since the main trophic flows are determined by the interaction between phytoplankton, zooplankton and forage fishes. The role of the detritivore pathway was also relevant due to the relatively high abundance of detritivores organisms and the large percentage of primary production flowing to the detritus. Forage fish have resulted to be a key compartment fostering the connectivity between the benthic and pelagic domains. Pelagic sharks, dolphins, anglerfish, large hake and large demersal fishes were identified as potential keystone functional groups in the BoB model. The results also showed an intense exploitation by fisheries in early 2000s. Different strategies between Spanish and French fleets were also found. French fleets were mainly focussed on low trophic level forage fish (e.g., sardine and anchovy) and had larger impacts on higher trophic levels, while Spanish fleets mostly focussed on higher trophic level forage fishes (e.g., mackerel, horse mackerel and blue whiting) but also targeting sardine and anchovy; and displayed lower impacts on higher trophic levels. Overall, our model demonstrates the importance of combining data sources from different countries to regionally address the sought-after implementation of the ecosystem-based management approach. 
PY 2022
PD JAN
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Elsevier BV
VL 264
UT 000788113400006
DI 10.1016/j.ecss.2021.107658
ID 84785
ER

EF