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A Regional Management Model of Fisheries in the Irish Sea.

By Philip Rodgers, J. Paul. Hillis, Laurent Le Grel, Gunilla Greig, Andrew Ryan, Brendan O'Mahony & Libby Woodhatch

ABSTRACT

The Irish Sea is a moderately discrete area with mixed fisheries targeting a fairly small number of relatively well researched but depleted fish stocks, including nephrops, cod, whiting, haddock, plaice and sole. The degree of dependence of the coastal communities on the fishery varies considerably but it is nevertheless a major contributor to output and employment in some localities. These characteristics make the Irish Sea an ideal subject for studying the possibilities offered by management of the fisheries as an entity.

The paper describes work, part-funded by the European Union, to develop a bio-economic model of the Irish Sea whitefish and nephrops fisheries. Vessels from Belgium, England, France, Northern Ireland, and the Republic of Ireland participate in the fishery. The objective of the model is to maximise the present value of the economic yield of the fishery subject to economic, biological, and institutional constraints under the assumption that the fishery is efficiently managed. The economic constraints include those of demand, production, costs, and social time preference rates. The biological constraints are those of the growth and recruitment characteristics of the stocks. The institutional constraints include the impact of limitations on changes in employment.

The model identifies the impact on national economies through a set of output and employment multipliers.

KEYWORDS: Fishery Economics, Fishery Management, Bio-Economic Modelling


 Bioeconomic Modeling

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