FN Archimer Export Format
PT J
TI Modelling potential spawning habitat of sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) in the Bay of Biscay
BT 
AF PLANQUE, Benjamin
   BELLIER, Edwige
   LAZURE, Pascal
AS 1:1;2:1;3:2;
FF 1:PDG-DOP-DCN-EMH;2:;3:PDG-DOP-DCB-DYNECO-PHYSED;
C1 IFREMER, Dept Ecol & Modeles Halieut, F-44311 Nantes 3, France.
   IFREMER, Lab Phys Hydrodynam & Sedimentaire, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI NANTES
   BREST
SE PDG-DOP-DCN-EMH
   PDG-DOP-DCB-DYNECO-PHYSED
IN WOS Ifremer jusqu'en 2018
IF 2.348
TC 122
UR https://archimer.ifremer.fr/doc/2007/publication-2180.pdf
LA English
DT Article
CR PEL 2000
   PEL 2001
   PELGAS 2002
   PELGAS 2003
   PELGAS 2004
BO Thalassa
DE ;Sardine;Potential spawning habitat;Generalized additive models;Environmental effects;Bay of Biscay;Anchovy
AB Large amplitude variations in recruitment of small pelagic fish result from interactions between a fluctuating environment and population dynamics processes such as spawning. The spatial extent and location of spawning, which is critical to the fate of eggs and larvae, can vary strongly from year to year, as a result of changing population structure and environmental conditions. Spawning habitat can be divided into 'potential spawning habitat', defined as habitat where the hydrographic conditions are suitable for spawning, 'realized spawning habitat', defined as habitat where spawning actually occurs, and 'successful spawning habitat', defined as habitat from where successful recruitment has resulted. Using biological data collected during the period 2000-2004, as well as hydrographic data, we investigate the role of environmental parameters in controlling the potential spawning habitat of anchovy and sardine in the Bay of Biscay. Anchovy potential spawning habitat appears to be primarily related to bottom temperature followed by surface temperature and mixed-layer depth, whilst surface and bottom salinity appear to play a lesser role. The possible influence of hydrographic factors on the spawning habitat of sardine seems less clear than for anchovy. Modelled relationships between anchovy and sardine spawning are used to predict potential spawning habitat from hydrodynamical simulations. The results show that the seasonal patterns in spawning are well reproduced by the model, indicating that hydrographic changes may explain a large fraction of spawning spatial dynamics. Such models may prove useful in the context of forecasting potential impacts of future environmental changes on sardine and anchovy reproductive strategy in the north-east Atlantic.
PY 2007
SO Fisheries Oceanography
SN 1054-6006
PU Blackwell science
VL 16
IS 1
UT 000242862700002
BP 16
EP 30
DI 10.1111/j.1365-2419.2006.00411.x
ID 2180
ER

EF