A prior for steepness in stock-recruitment relationships, based on an evolutionary persistence principle

He, Xi and Mangel , Marc and MacCall , Alec (2006) A prior for steepness in stock-recruitment relationships, based on an evolutionary persistence principle. Fishery Bulletin, 104(3), pp. 428-433.

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Abstract

Priors are existing information or beliefs that are needed in Bayesian analysis. Informative priors are important in obtaining the Bayesian posterior distributions for estimated parameters in stock assessment. In the case of the steepness parameter (h), the need for an informative prior is particularly important because it determines the stock-recruitment relationships in the model. However, specifications of the priors for the h parameter are often subjective. We used a simple population model to derive h priors based on life history considerations. The model was based on the evolutionary principle that persistence of any species, given its life history (i.e., natural mortality rate) and its exposure to recruitment variability, requires a minimum recruitment compensation that enables the species to rebound consistently from low critical abundances (Nc). Using the model, we derived the prior probability distributions of the h parameter for fish species that have a range of natural mortality, recruitment variabilities, and Nt values.

Item Type: Article
Title: A prior for steepness in stock-recruitment relationships, based on an evolutionary persistence principle
Personal Creator/Author:
CreatorsEmail
He, Xi
Mangel , Marc
MacCall , Alec
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 104
Number: 3
Page Range: pp. 428-433
Date: 2006
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8979
Depositing User: Patti M. Marraro
Date Deposited: 16 Aug 2012 13:24
Last Modified: 16 Aug 2012 13:24
URI: http://aquaticcommons.org/id/eprint/8979

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