How to combine two methods to restore populations cost effectively

Adam Lampert, Alan Hastings

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ecosystems worldwide have become degraded due to global change, and therefore, restoration of these ecosystems is critical for the prolonged provision of ecosystem services. Specifically, major restoration efforts are directed toward the restoration of key species that provide important services and functions. There are often several alternative methods to restore a species population, such as the reintroduction of its individuals, improvement of its habitat quality, and removal of competing invasive species. However, these methods can be expensive, and hence, it is important to determine how to cost effectively combine them over time. In this paper, we use optimal control theory and we find a general rule of thumb for combining two restoration methods. The general rule, which applies to a wide variety of ecosystems, is that cost-effective restoration entails one of the following two strategies: (1) using a single method until the system approaches a “restoration threshold” or (2) combining both methods to approach an “investment benchmark,” which is a certain configuration of the system that does not depend on the system's initial state. After either the restoration threshold or the investment benchmark has been approached, investment should stop and the system should be left to recover naturally. Therefore, finding the restoration threshold and the investment benchmark is key for guiding effective restoration, and we demonstrate a simple method for finding them.

Original languageEnglish (US)
Article numbere02552
JournalEcosphere
Volume10
Issue number1
DOIs
StatePublished - Jan 1 2019

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cost
methodology
ecosystems
ecological restoration
ecosystem
global change
ecosystem services
invasive species
method
restoration
reintroduction
habitat quality
ecosystem service
habitats

Keywords

  • bioeconomics
  • conservation
  • ecosystem services
  • optimal control
  • restoration
  • Stochastic Programming

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

How to combine two methods to restore populations cost effectively. / Lampert, Adam; Hastings, Alan.

In: Ecosphere, Vol. 10, No. 1, e02552, 01.01.2019.

Research output: Contribution to journalArticle

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