FN Archimer Export Format
PT J
TI Functional group based marine ecosystem assessment for the Bay of Biscay via elasticity analysis
BT 
AF Hosack, Geoffrey R.
   Trenkel, Verena
AS 1:1;2:2;
FF 1:;2:PDG-RBE-EMH;
C1 Commonwealth Scientific and Industrial Research Organisation, Data61, Hobart, Tasmania, Australia
   Ifremer, Nantes, France
C2 CSIRO, AUSTRALIA
   IFREMER, FRANCE
SI NANTES
SE PDG-RBE-EMH
IN WOS Ifremer UPR
   DOAJ
   copubli-int-hors-europe
IF 2.379
TC 2
UR https://archimer.ifremer.fr/doc/00510/62119/66311.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66312.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66313.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66314.gz
   https://archimer.ifremer.fr/doc/00510/62119/66315.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66316.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66317.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66318.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66320.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66321.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66322.pdf
   https://archimer.ifremer.fr/doc/00510/62119/66323.pdf
LA English
DT Article
CR EVHOE 2000
   EVHOE 2001
   EVHOE 2002
   EVHOE 2003
   EVHOE 2004
   EVHOE 2005
   EVHOE 2006
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   EVHOE 2012
   EVHOE 2013
   EVHOE 2014
   EVHOE 2015
   EVHOE EVALUATION HALIEUTIQUE OUEST DE L'EUROPE
BO Thalassa
DE ;Compensatory dynamics;Cumulative impacts;Elasticity;Fox model;Gompertz model;Predictive cross-validation
AB The transitory and long-term elasticities of the Bay of Biscay ecosystem to densityindependent and density-dependent influences were estimated within a state space model that accounted for both process and observation uncertainties. A functional group based model for the Bay of Biscay fish ecosystem was fit to time series obtained from scientific survey and commercial catch and effort data. The observation model parameters correspond to the unknown catchabilities and observation error variances that vary across the commercial fisheries and fishery-independent scientific surveys. The process model used a Gompertz form of density dependence, which is commonly used for the analysis of multivariate ecological time series, with unknown time-varying fishing mortalities. Elasticity analysis showed that the process model parameters are directly interpretable in terms of one-year look-ahead prediction elasticities, which measure the proportional response of a functional group in the next year given a proportional change to a variable or parameter in the current year. The density dependent parameters were also shown to define the elasticities of the long term means or quantiles of the functional groups to changes in fishing pressure. Evidence for the importance of indirect effects, mediated by density dependence, in determining the ecosystem response of the Bay of Biscay to changes in fishing pressure is presented. The state space model performed favourably in an assessment of model adequacy that compared observations of catch per unit effort against cross-validation predictive densities blocked by year. 
PY 2019
PD AUG
SO Peerj
SN 2167-8359
PU PeerJ
VL 7
UT 000480310600003
DI 10.7717/peerj.7422
ID 62119
ER

EF