Dynamics of closed areas in Norway lobster fisheries

I. Philip Smith, Antony C. Jensen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A dynamic, age-structured population model was developed to investigate the potential effects of introducing a closed area to a fishery for a species with limited adult mobility and planktonic dispersal of larvae, using biological and fishery information from a Norway lobster fishery in eastern Scotland. Simulated closure of part of the fishing grounds led to a long-term increase in total biomass and recruitment to the fished zone, but the larval subsidy did not compensate for the loss of fishing ground, and fishery yield was reduced under all modelled combinations of closed-area size and prior fishing effort. Concentration of effort in the fished zone and increased recruitment there led to reduced average size, and therefore value, of animals in the catch, as well as increased destruction of biomass by discarding undersized lobsters. Implementation of a closed area also led to oscillations in stock biomass, recruitment, and yield over several years after the closure, particularly with large closed areas and high fishing effort.
Original languageEnglish
Pages (from-to)1600-1609
Number of pages10
JournalICES Journal of Marine Science
Volume65
Issue number9
Early online date20 Oct 2008
DOIs
Publication statusPublished - Dec 2008

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lobster fishery
lobster fisheries
Nephrops norvegicus
fishing effort
fishery
fisheries
fishery resources
biomass
subsidies
lobster
lobsters
Scotland
oscillation
larva
animal
larvae
animals
fishing ground

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Dynamics of closed areas in Norway lobster fisheries. / Smith, I. Philip; Jensen, Antony C.

In: ICES Journal of Marine Science, Vol. 65, No. 9, 12.2008, p. 1600-1609.

Research output: Contribution to journalArticle

Smith, I. Philip ; Jensen, Antony C. / Dynamics of closed areas in Norway lobster fisheries. In: ICES Journal of Marine Science. 2008 ; Vol. 65, No. 9. pp. 1600-1609.
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