No-take areas for sustainability of harvested species and a conservation invariant for marine reserves

Authors
Citation
M. Mangel, No-take areas for sustainability of harvested species and a conservation invariant for marine reserves, ECOL LETT, 1(2), 1998, pp. 87-90
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
ECOLOGY LETTERS
ISSN journal
1461-023X → ACNP
Volume
1
Issue
2
Year of publication
1998
Pages
87 - 90
Database
ISI
SICI code
1461-023X(199809)1:2<87:NAFSOH>2.0.ZU;2-A
Abstract
Various kinds of no-take areas (refuges, reserves) are gaining attention as conservation tools. The efficacy of reserves can be considered from the pe rspectives of providing baseline data sets, protecting the stock, maximizin g yield to the fishery, or some combination of these. Regardless of the mea sure of effectiveness of a reserve, practical application requires the deve lopment of techniques for settling operational and policy questions such as how large a reserve should be. A simple model, involving population growth and harvest, is used to explore how the fraction of habitat assigned to a reserve affects the sustainability of a take and to frame the trade-off bet ween control of harvest outside of the reserve and the size of the reserve. This exploration also leads to the discovery of a robust conservation inva riant for reserves.