Improving the performance of a Mediterranean demersal fishery toward economic objectives beyond MSY

Merino, G; Quetglas, A; Maynou, F; Garau, A; Arrizabalaga, H; Murua, H; Santiago, J; Barange, M; Prellezo, R; Garcia, D; Lleonart, J; Tserpes, G; Maravelias, CD; Carvalho, N; Austen, MC; Fernandes, JA; Oliver, P; Grau, AM. 2015 Improving the performance of a Mediterranean demersal fishery toward economic objectives beyond MSY. Fisheries Research, 161. 131-144. 10.1016/j.fishres.2014.06.010

Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.fishres.2014.06.010

Abstract/Summary

Mediterranean demersal fisheries are highly multispecific and many of their target stocks are overexploited. In addition, rocketing fuel costs and low market prices of traditionally high-value species are challenging the viability of fisheries. Here, based on the numeric results of a simulation model, we conclude that this situation can be remedied by reducing both fishing mortality and fishing costs. According to our model results, fishing effort reductions of 48-71% would improve the health of fish stocks while increasing the economic profits of Mallorca islands bottom trawl fishery to as much as 1.9 M(sic) (146% higher than current profits). If all fish stocks were exploited at their MSY (or below) level, the reduction in fishing effort would have to be of 71% from current values. If equilibrium profits from the fishery were to be maximized (MEY), fishing effort would need to be reduced by 48%. These results must be taken with caution due the many sources of uncertainty of our analysis. The modeling tools used to estimate these values are conditional to the adequate treatment of two sources of uncertainty that are particularly problematic in Mediterranean fisheries: insufficiently known recruitment variability and lack of periodic evaluations of the state of many species. Our results show that fishing effort reductions would produce economic yield gains after a period of transition. Further studies on the benefits of changing the size-selection pattern of fisheries, on better estimation of stock recruitment relationships and on better quantifications of the contribution of secondary species to these fisheries, are expected to improve the scientific recommendations for Mediterranean demersal fisheries toward sustainability principles.

Item Type: Publication - Article
Additional Keywords: EU fisheries; Mediterranean; Demersal; Socioeconomics; Sustainability
Subjects: Ecology and Environment
Marine Sciences
Divisions: Plymouth Marine Laboratory > Science Areas > Sea and Society
Depositing User: Manuel Barange
Date made live: 08 Sep 2015 16:23
Last Modified: 06 Jun 2017 16:14
URI: http://plymsea.ac.uk/id/eprint/6548

Actions (login required)

View Item View Item