Is maximising resilience compatible with established ecological goal functions?

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Title Is maximising resilience compatible with established ecological goal functions?
Author Kristensen, Nadiah Pardede; Gabric, Albert Jerome; Braddock, Roger David; Cropp, Roger Allan
Journal Name Ecological Modelling: international journal on ecological modelling and systems ecology
Editor S E Joergensen
Year Published 2003
Place of publication Netherlands
Publisher Elsevier BV
Abstract Cropp and Gabric [Ecosystem adaptation: do ecosystems maximise resilience? Ecology. In press] used a simple phytoplankton–zooplankton–nutrient model and a genetic algorithm to determine the parameter values that would maximize the value of certain goal functions. These goal functions were to maximize biomass, maximize flux, maximize flux to biomass ratio, and maximize resilience. It was found that maximizing goal functions maximized resilience. The objective of this study was to investigate whether the Cropp and Gabric [Ecosystem adaptation: do ecosystems maximise resilience? Ecology. In press] result was indicative of a general ecosystem principle, or peculiar to the model and parameter ranges used. This study successfully replicated the Cropp and Gabric [Ecosystem adaptation: do ecosystems maximise resilience? Ecology. In press] experiment for a number of different model types, however, a different interpretation of the results is made. A new metric, concordance, was devised to describe the agreement between goal functions. It was found that resilience has the highest concordance of all goal functions trialled, for most model types. This implies that resilience offers a compromise between the established ecological goal functions. The parameter value range used is found to affect the parameter versus goal function relationships. Local maxima and minima affected the relationship between parameters and goal functions, and between goal functions.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.sciencedirect.com/science/journal/03043800
Alternative URI http://dx.doi.org/10.1016/S0304-3800(03)00248-5
Copyright Statement Copyright 2003 Elsevier : Reproduced in accordance with the copyright policy of the publisher : This journal is available online - use hypertext links. This is the author-manuscript version of this paper.
Volume 169
Page from 61
Page to 71
ISSN 0304-3800
Date Accessioned 2003-12-08
Date Available 2009-08-27T06:51:28Z
Language en_AU
Research Centre Australian Rivers Institute
Faculty Faculty of Environmental Sciences
Subject PRE2009-Ecology and Evolution
URI http://hdl.handle.net/10072/6096
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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