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Sea bass angling in Ireland: A structural equation model of catch and effort. ESRI WP574, November 2017

Grilli, Gianluca and Curtis, John and Hynes, Stephen and O'Reilly, Paul (2017) Sea bass angling in Ireland: A structural equation model of catch and effort. ESRI WP574, November 2017. [Working Paper]

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    The relationship between angling effort and catch is well-recognised, in particular that effort influences catch rates. But increased catch, which can be considered an attribute of fishery quality, may influence effort in terms of number of fishing trips. This suggests bi-directional feedback between catch and effort. In many travel cost applications little attention has been given to this endogeneity problem. In this paper we expand the application of structural equation models to address this issue by jointly estimating demand (effort) and catch functions. Using a cross-section dataset of sea bass anglers we propose two separate joint models. First, we include expected catch as an explanatory variable in the demand equation. In the second, we reverse the causality and use the expected number of fishing days as a covariate in the catch function. The two approaches produce similar model estimates, and perform better at predicting anglers' catch and effort than standard models. The findings confirm that ‘catch & release’ does not curtail fishing activity and that sea bass angling is highly valued. Furthermore higher catches result more days fished, on average in a 2:1 ratio. Whereas on average, an additional fishing day results in 3-4 additional bass caught.

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    Item Type: Working Paper
    Subjects for non-EU documents: EU policies and themes > Policies & related activities > agriculture policy
    EU policies and themes > Policies & related activities > sports
    Countries > Ireland
    Subjects for EU documents: UNSPECIFIED
    EU Series and Periodicals: UNSPECIFIED
    EU Annual Reports: UNSPECIFIED
    Series: Series > Economic and Social Research Institute (ESRI), Dublin > ESRI Working Papers
    Depositing User: Phil Wilkin
    Official EU Document: No
    Language: English
    Date Deposited: 13 Dec 2019 22:26
    Number of Pages: 17
    Last Modified: 05 Feb 2020 03:09

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