FN Archimer Export Format
PT J
TI North Sea saithe Pollachius virens growth in relation to food availability, density dependence and temperature
BT 
AF CORMON, Xochitl
   ERNANDE, Bruno
   KEMPF, Alexander
   VERMARD, Youen
   MARCHAL, Paul
AS 1:1;2:1;3:2;4:3;5:1;
FF 1:PDG-RBE-HMMN-RHBL;2:PDG-RBE-HMMN-RHBL;3:;4:PDG-RBE-EMH;5:PDG-RBE-HMMN-RHBL;
C1 IFREMER, Channel & North Sea Fisheries Res Unit, 150 Quai Gambetta,BP 699, F-62321 Boulogne Sur Mer, France.
   Thunen Inst Sea Fisheries, Palmaille 9, D-22767 Hamburg, Germany.
   IFREMER, Unit Fisheries Ecol & Modelling, BP 21105, F-44311 Nantes 03, France.
C2 IFREMER, FRANCE
   THUNEN INST SEA FISHERIES, GERMANY
   IFREMER, FRANCE
SI BOULOGNE
   NANTES
SE PDG-RBE-HMMN-RHBL
   PDG-RBE-EMH
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 2.292
TC 8
UR https://archimer.ifremer.fr/doc/00314/42499/41875.pdf
   https://archimer.ifremer.fr/doc/00314/42499/42031.pdf
LA English
DT Article
CR IBTS 2000
   IBTS 2001
   IBTS 2002
   IBTS 2003
   IBTS 2004
   IBTS 2005
   IBTS 2006
   IBTS 2007
   IBTS 2008
   IBTS 2009
   IBTS 2010
   IBTS 2011
   IBTS 2012
   IBTS 92/2
   IBTS 93/1
   IBTS 93/2
   IBTS 94/1
   IBTS 94/2
   IBTS 95/1
   IBTS 95/2
   IBTS 96/1
   IBTS 96/2
   IBTS 97
   IBTS 98
   IBTS 99
   IYFS 91
   IYFS 92 - IBTS 92/1
BO Thalassa
DE ;Bottom-up processes;von Bertalanffy growth function;Logistic growth;Norway pout;Prey availability effects;Density-dependence;Predator-prey interactions;Resource limitation;Competition
AB North Sea saithe Pollachius virens, a major top predator in the area, supports the fishery economy of several European countries. However, recent stock assessments suggested a decrease in spawning stock biomass along with a decline in saithe mean weight-at-ages. In this context, we investigated North Sea saithe growth characteristics at the population level. First, saithe annual weight increments and age-length relationships were studied. Modelling of saithe age-length relationships was carried out using (1) the traditional von Bertalanffy growth function model, (2) the Verhulst logistic model and (3) an empirical linear model. Second, the effects of environmental factors on saithe growth were investigated. Explanatory environmental factors included food availability, represented by the total biomass of Norway pout Trisopterus esmarkii; intraspecific competition, i.e. density dependence, represented by saithe abundance; and temperature. This study revealed that the Verhulst logistic model was the best descriptor of saithe growth and that density dependence and food availability had significant effects on the saithe growth coefficient, while no effect of temperature was shown. We suggest that reduced food availability and increased competition may explain the recent decrease in the saithe growth coefficient.
PY 2016
PD JAN
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 542
UT 000368922900011
BP 141
EP 151
DI 10.3354/meps11559
ID 42499
ER

EF