Conservation and Optimal Use of Rangelands

32 Pages Posted: 22 Jan 2004

See all articles by Charles Perrings

Charles Perrings

Arizona State University (ASU) - Global Institute of Sustainability (GIOS)

Brian Walker

CSIRO, Mathematical and Information Science

Date Written: December 2003

Abstract

In previous papers we have considered the optimal mix of biodiversity in semi-arid rangelands, focusing on the steady state. This paper addresses the question of conservation in the optimal use of rangelands. That is, it considers the optimal trajectory of biodiversity change. There are two issues involved in the question of timing. One is the uncertainty associated with the fact that many changes in the flora and fauna of rangelands are 'event-driven'. They depend on stochastic parameters taking particular values before a change of state can occur. A second issue relates to the lag structure of changes. In a system that involves a mix of fast and slow variables, in which the approach to the optimum is not 'most rapid', the optimal trajectory may require the system to remain in an apparently stable intermediate equilibrium for some time before it converges to the optimum state. The paper discusses the role of conservation in the optimal use of rangeland resources.

Suggested Citation

Perrings, Charles and Walker, Brian, Conservation and Optimal Use of Rangelands (December 2003). Available at SSRN: https://ssrn.com/abstract=486067 or http://dx.doi.org/10.2139/ssrn.486067

Charles Perrings (Contact Author)

Arizona State University (ASU) - Global Institute of Sustainability (GIOS) ( email )

Tempe, AZ
United States

Brian Walker

CSIRO, Mathematical and Information Science ( email )

Lyneham, Australian Capital Territory 2602
Australia
Not Available (Phone)
Not Available (Fax)

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