FN Archimer Export Format
PT J
TI Exploring Change in the Relative Abundance of Marine Megafauna in the Bay of Biscay, 2004-2016
BT 
AF AUTHIER, Matthieu
   DOREMUS, Ghislain
   VAN CANNEYT, Olivier
   BOUBERT, Jean-Jacques
   GAUTIER, Gerard
   DORAY, Mathieu
   DUHAMEL, Erwan
   MASSE, Jacques
   PETITGAS, Pierre
   RIDOUX, Vincent
   SPITZ, Jerome
AS 1:1;2:1;3:1;4:1;5:1;6:2;7:3;8:2;9:2;10:1,4;11:1;
FF 1:;2:;3:;4:;5:;6:PDG-RBE-EMH;7:PDG-RBE-STH-LTBH;8:PDG-RBE-EMH;9:PDG-RBE-EMH;10:;11:;
C1 Univ La Rochelle, Observ PELAGIS UMS CNRS ULR 3462, 5 Allee Ocean, F-17000 La Rochelle, France.
   Ifremer Ctr Atlantique, Unite Ecol & Modeles Halieut EMH, Rue Ile Yeu,BP 21105, F-44311 Nantes 03, France.
   Ifremer Stn Lorient, LTBH, 8 Rue Francois Toullec, F-56100 Lorient, France.
   CEBC, UMR CNRS ULR 7372, F-79360 Villiers En Bois, France.
C2 UNIV LA ROCHELLE, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   CEBC, FRANCE
SI NANTES
   LORIENT
SE PDG-RBE-EMH
   PDG-RBE-STH-LTBH
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.245
TC 16
UR https://archimer.ifremer.fr/doc/00403/51405/51981.pdf
LA English
DT Article
CR PELGAS
DE ;Marine megafauna;Relative abundance;MSFD;Ecosystemic surveys
AB Conservation has moved from species-centered to ecosystem-based approaches: the Marine Strategy Framework Directive requires the maintenance or restoration of ‘Good Environmental Status’ of all European marine waters. Monitoring biodiversity at the scale of whole ecosystems is salient, but challenging owing to the large spatial scale involved and the large spatio-temporal heterogeneity of marine ecosystems. We capitalized on the integrated ecosystemic PELGAS survey carried out in spring in the Bay of Biscay to document patterns of change in marine megafauna relative abundance at the community level over more than a decade (2004-2016). The relative abundance of the twenty three most frequently sighted species (6 cetaceans and 17 seabirds) was estimated by distance sampling, and averaged over the study period and area. Temporal changes were investigated with a Dynamic Factor Analysis. This exploratory analysis suggested that approximately one third of all species showed an increase, another third a decrease, and the last third no overall change in relative abundance. The relative abundance of offshore species, including that of all studied cetaceans, slightly increased in spring between 2004 and 2016. Further investigations will correlate the uncovered changes at the marine megafauna community level with concommittent biological and oceanographic processes that are routinely monitored on the PELGAS integrated ecosystemic surveys. 
PY 2018
PD SEP
SO Progress In Oceanography
SN 0079-6611
PU Pergamon-elsevier Science Ltd
VL 166
UT 000442979000016
BP 159
EP 167
DI 10.1016/j.pocean.2017.09.014
ID 51405
ER

EF