Trading on extinction : an open-access deterrence model for the South African abalone fishery

Show simple item record Crookes, Douglas 2016-05-26T10:59:10Z 2016-05-26T10:59:10Z 2016-03
dc.description This article forms part of a 3-year project studying new approaches to model the economics of scarce resources. en_ZA
dc.description.abstract South African rhinoceros (e.g. Diceros bicornis) and abalone (Haliotis midae) have in common that they both are harvested under open-access conditions, are high-value commodities and are traded illegally. The difference is that a legal market for abalone already exists. An open-access deterrence model was developed for South African abalone, using Table Mountain National Park as a case study. It was found that illegal poaching spiked following the closure of the recreational fishery. The resource custodian’s objective is to maximise returns from confiscations. This study showed that a legal trade results in a ‘trading on extinction’ resource trap, with a race for profits, an increase in the probability of detection after a poaching event and the depletion of populations. In contrast with HS Gordon’s seminal article (J Polit Econ 1954;62:124–142), profit maximisation does not automatically improve the sustainability of the resource. Under certain conditions (e.g. a legal trade with costly enforcement), profit maximisation may actually deplete abalone populations. The article also has implications for rhino populations, as a legal trade is currently proposed. en_ZA
dc.description.department Economics en_ZA
dc.description.librarian am2016 en_ZA
dc.description.sponsorship The National Research Foundation (South Africa) en_ZA
dc.description.uri en_ZA
dc.identifier.citation Crookes DJ. Trading on extinction: An open-access deterrence model for the South African abalone fishery. South African Journal of Science. 2016 ; 112(3/4), Art. #2015-0237, 9 pages. 10.17159/sajs.2016/20150237. en_ZA
dc.identifier.issn 0038-2353 (print)
dc.identifier.issn 1996-7489 (online)
dc.identifier.other 10.17159/sajs.2016/20150237
dc.language.iso en en_ZA
dc.publisher AOSIS Open Journals en_ZA
dc.rights © 2016. The Author(s). Published under a Creative Commons Attribution Licence. en_ZA
dc.subject Rhino en_ZA
dc.subject System dynamics en_ZA
dc.subject Illegal harvesting en_ZA
dc.subject Predator–prey en_ZA
dc.subject Table Mountain National Park en_ZA
dc.subject South African abalone en_ZA
dc.subject South African rhinoceros en_ZA
dc.title Trading on extinction : an open-access deterrence model for the South African abalone fishery en_ZA
dc.type Article en_ZA

Files in this item

This item appears in the following Collection(s)

Show simple item record