Economics at your fingertips  

Harvest and extinction in multi-species ecosystems

Matthew D. Potts and Jeffrey Vincent ()

Ecological Economics, 2008, vol. 65, issue 2, 336-347

Abstract: A potential cost of harvesting in multi-species ecosystems is the extinction of nonharvested species that are at the same trophic level as the harvested species. Existing analytical models are not well-suited for studying this harvest externality because they focus on species interactions across trophic levels instead of within them. We identify the conditions under which the harvesting of a single species causes at least one extinction of nonharvested species at the same trophic level. We compare two harvest regimes: uniform management, in which a privately optimal harvest rate is applied to the entire ecosystem; and specialized management, in which a portion of the ecosystem is intensively managed for the harvested species and the rest is left unharvested. Which regime is more likely to result in extinction depends on the discount rate and on the harvested species' competitive ability and colonization rate compared to those of the other species.

Date: 2008
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2) Track citations by RSS feed

Downloads: (external link)
Full text for ScienceDirect subscribers only

Related works:
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:

Access Statistics for this article

Ecological Economics is currently edited by C. J. Cleveland

More articles in Ecological Economics from Elsevier
Bibliographic data for series maintained by Nithya Sathishkumar ().

Page updated 2021-04-29
Handle: RePEc:eee:ecolec:v:65:y:2008:i:2:p:336-347