Simple, policy friendly, ecological interaction models from uncertain data and expert opinion.

Stafford, R., Williams, R.L and Herbert, R. J.H., 2015. Simple, policy friendly, ecological interaction models from uncertain data and expert opinion. Ocean and Coastal Management, 118 (Part A), pp. 88-96.

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DOI: 10.1016/j.ocecoaman.2015.04.013

Abstract

In the marine environment, humans exploit natural ecosystems for food and economic benefit. Challenging policy goals have been set to protect resources, species, communities and habitats, yet ecologists often have sparse data on interactions occurring in the system to assess policy outcomes. This paper presents a technique, loosely based on Bayesian Belief Networks, to create simple models which 1) predict whether individual species within a community will decline or increase in population size, 2) encapsulate uncertainty in the predictions in an intuitive manner and 3) require limited knowledge of the ecosystem and functional parameters required to model it. We develop our model for a UK rocky shore community, to utilise existing knowledge of species interactions for model validation purposes. However, we also test the role of expert opinion, without full scientific knowledge of species interactions, by asking non-UK based marine scientists to derive parameters for the model (non-UK scientists are not familiar with the exact communities being described and will need to extrapolate from existing knowledge in a similar manner to model a poorly studied system). We find these differ little from the parameters derived by ourselves and make little difference to the final model predictions. We also test our model against simple experimental manipulations, and find that the most important changes in community structure as a result of manipulations correspond well to the model predictions with both our, and non-UK expert parameterisation. The simplicity of the model, nature of the outputs, and the user-friendly interface makes it potentially suitable for policy, conservation and management work on multispecies interactions in a wide range of marine ecosystems.

Item Type:Article
ISSN:0964-5691
Uncontrolled Keywords:Rocky shore; Predictive model; Sparse data; Marine management; Fisheries; Bayesian belief network; Conservation
Subjects:UNSPECIFIED
Group:Faculty of Science and Technology
ID Code:21870
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:27 Apr 2015 10:43
Last Modified:06 Jan 2016 16:15

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