Recovering viable fisheries

Luc Doyen, Vincent Martinet and Olivier Thebaud

No 2006-5, EconomiX Working Papers from University of Paris Nanterre, EconomiX

Abstract: This paper develops a formal analysis of the recovery processes for a fishery, from undesired to desired levels of sustainable exploitation, using the theoretical framework of viability control. We define sustainability in terms of biological, economic and social constraints which need to be met for a viable fishery to exist. Biological constraints are based on the definition of a minimal resource stock to be preserved. Economic constraints relate to the existence of a minimum profit per vessel. Social constraints refer to the maintenance of a minimum size of the fleet, and to the maximum speed at which fleet adjustment can take place. Using fleet size and fishing effort per vessel as control variables, we identify the states of this bioeconomic system for which sustainable exploitation is possible, i.e. for which all constraints are dynamically met. Such favorable states are called viable states. We then examine possible transition phases, from non-viable to viable states. We characterize recovery paths, wih respect to the economic and social costs of limiting catches during the recovery period, and to the duration of this transition period. Sensitivity of each of the constraints to transition costs and time are analyzed. The analysis is applied to a single stock fishery; preliminary results of an empirical application to the bay of Biscay nephrops fishery are presented.

Keywords: Sustainable fishing; recovery; fishery policies; bio-economic modeling. (search for similar items in EconPapers)
JEL-codes: C61 Q22 (search for similar items in EconPapers)
Pages: 28 pages
Date: 2006
New Economics Papers: this item is included in nep-env
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://economix.fr/pdf/dt/2006/WP_EcoX_2006-5.pdf (application/pdf)

Related works:
Working Paper: Recovering viable fisheries (2006)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:drm:wpaper:2006-5

Access Statistics for this paper

More papers in EconomiX Working Papers from University of Paris Nanterre, EconomiX Contact information at EDIRC.
Bibliographic data for series maintained by Valerie Mignon ( this e-mail address is bad, please contact ).