FN Archimer Export Format
PT J
TI Decadal stability in top predator habitat preferences in the Bay of Biscay
BT 
AF LAMBERT, C.
   AUTHIER, M.
   DORAY, Mathieu
   DOREMUS, G.
   SPITZ, J.
   RIDOUX, V.
AS 1:1;2:2;3:3;4:2;5:2;6:1,2;
FF 1:;2:;3:PDG-RBE-EMH;4:;5:;6:;
C1 Univ La Rochelle, UMR CNRS 7372, Ctr Etud Biol Chize, F-17000 La Rochelle, France.
   Univ La Rochelle, UMS CNRS 3462, Observ PELAGIS, F-17000 La Rochelle, France.
   IFREMER, EMH, Rue Ile dYeu,BP 21105, F-44311 Nantes 03, France.
C2 UNIV LA ROCHELLE, FRANCE
   UNIV LA ROCHELLE, FRANCE
   IFREMER, FRANCE
SI NANTES
SE PDG-RBE-EMH
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 3.245
TC 6
UR https://archimer.ifremer.fr/doc/00431/54226/55549.pdf
LA English
DT Article
CR PELGAS
DE ;Habitat preference;Temporal variability;Cetaceans;Seabirds;North Atlantic;Bay of Biscay
AB Most oceanographic systems, especially shelf ecosystems, are characterised by interannual variability in the timing, extent and intensity of their seasonal patterns. Such interannual variations have important consequences on top predator habitat preferences. Capitalising on oceanographic surveys performed every spring since 2004 in the Bay of Biscay (BoB), this study explored interannual variations in habitat preferences exhibited by five mobile top predator species: bottlenose and common dolphins, auks, fulmars and northern gannets. We expected to find species with similar habitat preferences every year or species exhibiting important variability in their habitat preferences. First, we identified with a Principal Component Analysis (PCA) three different habitats of varying extent depending on year: river plumes, central shelf waters and shelf edge. Second, the Principal Components were used to explore the habitat preferences of predators through Generalized Additive Models. We fitted two kinds of models, using and not using the year as an interaction term, to test whether habitat preferences changed across years. Our results showed a range of habitat strategies based on the specificity and stability of species preferences. Species exhibiting narrower habitat preferences also exhibited stronger stability in their preferences among years while the species with wider habitat preferences exhibited higher variability among years. The target habitats differed across studied species, with bottlenose dolphins targeting the shelf edge exclusively, auks preferring river plumes, fulmars exhibiting a gradual preference from the shelf edge to river plumes and gannets being present in any of the three habitats. In contrast, the habitat preferences of common dolphins, the most sighted cetacean species in the BoB, could not be reliably inferred. 
PY 2018
PD SEP
SO Progress In Oceanography
SN 0079-6611
PU Pergamon-elsevier Science Ltd
VL 166
UT 000442979000011
BP 109
EP 120
DI 10.1016/j.pocean.2018.03.007
ID 54226
ER

EF