A general framework for combining ecosystem models
A general framework for combining ecosystem models
复制标题
组合生态系统模型的通用框架
DOI:
10.1111/faf.12310
复制
发表时间:
2018
影响因子:
6.7
通讯作者:
Spence M
中科院分区:
文献类型:
--
作者:
Spence M
When making predictions about ecosystems, we often have available a number of different ecosystem models that attempt to represent their dynamics in a detailed mechanistic way. Each of these can be used as a simulator of large‐scale experiments and make projections about the fate of ecosystems under different scenarios to support the development of appropriate management strategies. However, structural differences, systematic discrepancies and uncertainties lead to different models giving different predictions. This is further complicated by the fact that the models may not be run with the same functional groups, spatial structure or time scale. Rather than simply trying to select a “best” model, or taking some weighted average, it is important to exploit the strengths of each of the models, while learning from the differences between them. To achieve this, we construct a flexible statistical model of the relationships between a collection of mechanistic models and their biases, allowing for structural and parameter uncertainty and for different ways of representing reality. Using this statistical meta‐model, we can combine prior beliefs, model estimates and direct observations using Bayesian methods and make coherent predictions of future outcomes under different scenarios with robust measures of uncertainty. In this study, we take a diverse ensemble of existing North Sea ecosystem models and demonstrate the utility of our framework by applying it to answer the question what would have happened to demersal fish if fishing was to stop.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Cody S. Szuwalski;J. Thorson
通讯作者:
J. Thorson
影响因子:
3.7
作者:
S. Mackinson;M. Platts;Clement Garcia;C. Lynam
通讯作者:
C. Lynam
影响因子:
3.3
作者:
Dickey-Collas, Mark;Payne, Mark R.;Nash, Richard D. M.
通讯作者:
Nash, Richard D. M.
影响因子:
3.7
作者:
J. Kadane;J. Dickey;R. L. Winkler;Wayne S. Smith;S. Peters
通讯作者:
S. Peters
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
C. Lynam;S. Mackinson
通讯作者:
S. Mackinson