FN Archimer Export Format
PT J
TI Responses of European anchovy vital rates and population growth to environmental fluctuations: An individual-based modeling approach
BT 
AF PETHYBRIDGE, Heidi
   ROOS, David
   LOIZEAU, Veronique
   PECQUERIE, Laure
   BACHER, Cedric
AS 1:1;2:2;3:1;4:3;5:1;
FF 1:PDG-RBE-BE-LBCO;2:PDG-RBE-HM-RHSETE;3:PDG-RBE-BE-LBCO;4:;5:PDG-DS;
C1 IFREMER, Ctr Brest, Res Unit Biogeochem & Ecotoxicol, F-29280 Plouzane, France.
   IFREMER, Ctr Sete, Res Unit Fisheries Resources, F-29280 Plouzane, France.
   Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   UNIV CALIF SANTA BARBARA, USA
SI BREST
   SETE
SE PDG-RBE-BE-LBCO
   PDG-RBE-HM-RHSETE
   PDG-DS
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 2.326
TC 35
UR https://archimer.ifremer.fr/doc/00127/23822/22490.pdf
LA English
DT Article
CR PELMED 2005
   PELMED 2006
   PELMED 2007
   PELMED 2008
   PELMED 2009
   PELMED 2010
   PELMED 2011
   PELMED 2012
BO L'Europe
DE ;Engraulis encrasicolus;NW Mediterranean Sea;Environmental variability;Dynamic Energy Budget theory;Growth;Fecundity
AB A size-structured, bioenergetics model was implemented to examine the effects of short-term environmental changes on European anchovy, Engraulis encrasicolus, in the North-western Mediterranean Sea. The model approach was based on Dynamic Energy Budget (DEB) theory and details the acquisition and allocation of energy (J d(-1)) during an organisms' full life-cycle. Model calibration was achieved using biometric data collected from the Gulf of Lions between 2002 and 2011. Bioenergetics simulations successfully captured ontogenetic and seasonal growth patterns, including active growth in spring/summer, loss of mass in autumn/winter and the timing and amplitude of multi-batch spawning events. Scenario analysis determined that vital rates (growth and fecundity) were highly sensitive to short-term environmental changes. The DEB model provided a robust foundation for the implementation of an individual-based population model (IBM) in which we used to test the responses of intrinsic and density-independent population growth rates (r) to observed and projected environmental variability. IBM projections estimate that r could be reduced by as much as 15% (relative to that estimated under mean conditions) due to either a 5% (0.8 degrees C) drop in temperature (due to a reduced spawning duration), a 18% (25 mg zooplankton m(-3)) depletion in food supply, a 30% increase in egg mortality rates, or with the phytoplankton bloom peaking 5 weeks earlier (in late-February/Winter). The sensitivity of r to short-term (1 year) and long-term (4-10 year) environmental changes were similar, highlighting the importance of first-year spawners. In its current form, the models presented here could be incorporated into spatially-explicit, higher-trophic (predator-prey and end-to-end ecosystem), larval-dispersal and toxicokinetic models or adapted to other short-lived foraging fish (clupeid) species. (C) 2012 Elsevier B.V. All rights reserved.
PY 2013
PD FEB
SO Ecological Modelling
SN 0304-3800
PU Elsevier Science Bv
VL 250
UT 000315246100035
BP 370
EP 383
DI 10.1016/j.ecolmodel.2012.11.017
ID 23822
ER

EF