FN Archimer Export Format
PT J
TI A two-stage biomass random effects model for stock assessment without catches: What can be estimated using only biomass survey indices?
BT 
AF TRENKEL, Verena
AS 1:;
FF 1:PDG-DOP-DCN-EMH;
C1 Inst Francais Rech Exploitat Mer, Dept Ecol & Models Fisheries, F-44311 Nantes 3, France.
C2 IFREMER, FRANCE
SI NANTES
SE PDG-DOP-DCN-EMH
IN WOS Ifremer jusqu'en 2018
IF 2.276
TC 16
UR https://archimer.ifremer.fr/doc/2008/publication-4565.pdf
LA English
DT Article
DE ;survey based assessment;population state;random effects
AB A simple two-stage biomass random effects population dynamics model is presented for carrying out fish stock assessments based on survey indices using no commercial catch information. Recruitment and biomass growth are modelled as random effects, reducing the number of model parameters while maintaining model flexibility. No assumptions regarding natural mortality rates are required. The performance of the method was evaluated using simulated data with emphasis on identifying parameter redundancy, which showed that the variance of the biomass growth random effect might only be estimable if large (> 0.2). The full and two nested models were fitted to European anchovy (Engraulis encrasicolus) in the Bay of Biscay using two survey series. The best-fitting model had fixed biomass growth and random recruitment following a lognormal distribution.
PY 2008
PD JUL
SO Canadian journal of fisheries and aquatic sciences
SN 0706-652X
PU NRC
VL 65
IS 6
UT 000257358500002
BP 1024
EP 1035
DI 10.1139/F08-028
ID 4565
ER

EF