Costs and decisions in population management: Koalas on Kangaroo Island

Pollett, P. K. and Ross, J.V. (2005). Costs and decisions in population management: Koalas on Kangaroo Island. In: A. Zerger and R. M. Argent, Proceedings of the 16th Biennial Congress on Modelling and Simulation. 16th Biennial Congress on Modelling and Simulation MODSIM05, University of Melbourne, (2082-2088). 12 - 15 December 2005.

Author Pollett, P. K.
Ross, J.V.
Title of paper Costs and decisions in population management: Koalas on Kangaroo Island
Conference name 16th Biennial Congress on Modelling and Simulation MODSIM05
Conference location University of Melbourne
Conference dates 12 - 15 December 2005
Proceedings title Proceedings of the 16th Biennial Congress on Modelling and Simulation
Journal name Modsim 2005: International Congress On Modelling and Simulation: Advances and Applications for Management and Decision Making
Place of Publication Canberra, Australia
Publisher Modelling and Simulation Society of Australia and New Zealand
Publication Year 2005
Sub-type Fully published paper
ISBN 0975840029
9780975840023
Editor A. Zerger
R. M. Argent
Start page 2082
End page 2088
Total pages 7
Collection year 2005
Language eng
Abstract/Summary Many populations have a negative impact on their habitat, or upon other species in the environment, if their numbers become too large. For this reason they are often managed using some form of control. The objective is to keep numbers at a sustainable level, while ensuring survival of the population.+Here we present models that allow population management programs to be assessed. Two common control regimes will be considered: reduction and suppression. Under the suppression regime the previous population is maintained close to a particular threshold through near continuous control, while under the reduction regime, control begins once the previous population reaches a certain threshold and continues until it falls below a lower pre-defined level. We discuss how to best choose the control parameters, and we provide tools that allow population managers to select reduction levels and control rates. Additional tools will be provided to assess the effect of different control regimes, in terms of population persistence and cost.In particular we consider the effects of each regime on the probability of extinction and the expected time to extinction, and compare the control methods in terms of the expected total cost of each regime over the life of the population. The usefulness of our results will be illustrated with reference to the control of a koala population inhabiting Kangaroo Island, Australia.
Subjects E1
230202 Stochastic Analysis and Modelling
780101 Mathematical sciences
Keyword Habitat Impact
Sustainable level
Control Regimes
Control Parameters
Kangaroo Island, Australia
Q-Index Code E1

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Fri, 24 Aug 2007, 06:55:47 EST