dc.contributor.author |
Crookes, Douglas
|
|
dc.date.accessioned |
2016-05-26T10:59:10Z |
|
dc.date.available |
2016-05-26T10:59:10Z |
|
dc.date.issued |
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 |
http://www.sajs.co.za |
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.
http://dx.DOI.org/ 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.identifier.uri |
http://hdl.handle.net/2263/52762 |
|
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 |