FN Archimer Export Format
PT J
TI Determining long‐term changes in a skate assemblage with aggregated landings and limited species data
BT 
AF Marandel, Florianne
   Lorance, Pascal
   Trenkel, Verena
AS 1:1;2:1;3:1;
FF 1:PDG-RBE-EMH;2:PDG-RBE-EMH;3:PDG-RBE-EMH;
C1 Ifremer , Nantes, France
C2 IFREMER, FRANCE
SI NANTES
SE PDG-RBE-EMH
IN WOS Ifremer UPR
IF 1.733
TC 4
UR https://archimer.ifremer.fr/doc/00589/70088/68138.pdf
LA English
DT Article
CR EVHOE EVALUATION HALIEUTIQUE OUEST DE L'EUROPE
DE ;community changes;fishing impacts;multispecies management;multispecies model;Rajiformes;species composition;vulnerable skates
AB Sustainable fisheries management requires assessment of exploited populations and communities. Traditional fisheries stock assessment methods need species‐specific input data, which for skates have only recently become available in Europe. To overcome this limitation, a Bayesian multispecies biomass production model was developed. In addition to aggregated landings, input data are short time series with species‐specific information (landings and biomass indices). Applying the approach to four main skate species and a group of two skate species, all managed together in the Bay of Biscay (Northeast Atlantic), long‐term changes in the skate assemblage composition were identified. Since the 1990s, Leucoraja naevus became increasingly dominant, while the contributions of the other three species (Raja brachyura, Raja clavata and Raja montagui) declined. The abundance of the grouped Leucoraja fullonica and L. circularis has also strongly decreased, suggesting long‐term overexploitation. All species except this species group are expected to increase over the next decade under current harvest rates. Currently, the species considered here are managed under a single fishing quota making it unlikely that the group of the two most depleted species will recover soon. The multispecies modelling approach bears promise for other harvested assemblages for which only grouped harvest information is available for certain periods. 
PY 2019
PD AUG
SO Fisheries Management And Ecology
SN 0969-997X
PU Wiley
VL 26
IS 4
UT 000473953000001
BP 365
EP 373
DI 10.1111/fme.12367
ID 70088
ER

EF