FN Archimer Export Format
PT J
TI Improving the interpretation of fishing effort and pressures in mixed fisheries using spatial overlap metrics
BT 
AF Bourdaud, Pierre
   Travers-Trolet, Morgane
   Vermard, Youen
   Marchal, Paul
AS 1:1;2:2,3;3:3;4:4;
FF 1:PDG-RBE-HMMN-LRHBL;2:PDG-RBE-EMH;3:PDG-RBE-EMH;4:PDG-RBE-HMMN;
C1 Ifremer Centre Manche Mer du Nord, 121237, 150 quai Gambetta, Boulogne-sur-Mer, France, 62321;
   IFREMER, F-62321 Boulogne-sur-Mer, cedex, France
   Ifremer Centre Atlantique, 70611, Nantes, Pays de la Loire, France
   Ifremer, Channel and North Sea Fisheries Research Unit, 150 Quai Gambetta, Boulogne sur mer, France, 62321, , ;
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BOULOGNE
   NANTES
SE PDG-RBE-HMMN-LRHBL
   PDG-RBE-EMH
   PDG-RBE-HMMN
IN WOS Ifremer UPR
IF 2.849
TC 9
UR https://archimer.ifremer.fr/doc/00446/55747/57402.pdf
LA English
DT Article
CR CGFS : CHANNEL GROUND FISH SURVEY
AB Managing mixed fisheries requires understanding fishers’ behaviour to allow predicting future fisheries distribution and impact on marine ecosystems. A new approach was developed to compare fine scale fishing effort distribution of Eastern English Channel (EEC) bottom trawlers, to the monthly- and spatially-resolved abundance distributions of commercial species. First, the added-value of using species-specific spatial overlap metric to quantify effective fishing effort and improve the relationship between fishing effort and fishing mortality was assessed. Second, based on the Ideal Free Distribution (IFD) theory, the species-specific weights given by fishers to different species were estimated by maximizing the overlap between target species assemblage and effort distributions in October. At a seasonal scale our results emphasized the importance of cuttlefish and red mullet for the global distribution of EEC bottom trawlers. In October, cuttlefish and red mullet were clearly more determining fishers’ location choice than historically harvested species, and also than the overall expected revenue. This is likely due to external constraints such as low cod quota, causing IFD assumptions violated. This study evidenced the importance of getting good insights into spatio-temporal distributions of stocks and fleets to understand fishers’ behaviour and improve mixed fisheries management advice 
PY 2019
PD APR
SO Canadian Journal Of Fisheries And Aquatic Sciences
SN 0706-652X
PU Canadian Science Publishing
VL 76
IS 4
UT 000462361900008
BP 586
EP 596
DI 10.1139/cjfas-2017-0529
ID 55747
ER

EF