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The ensemble Kalman filter in bioeconomics

Kvamsdal, Sturla Furunes; Sandal, Leif Kristoffer
Working paper
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URI
http://hdl.handle.net/11250/164195
Date
2012-05
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  • Discussion papers (FOR) [593]
Abstract
We demonstrate the power of the Ensemble Kalman Filter in specifying

ecosystem models ideal for bioeconomic analysis. Bioeconomic analysis

requires models to be relatively simple, but models must still capture the

nature and dynamics of the system. With the Ensemble Kalman Filter, we

are able to capture complex dynamics in multispecies models with models

simple enough to allow further bioeconomic analysis. While bioeconomic

analysis has had limited inuence on management decisions, the advent of

new methods and the need for high dimensional ecosystem based manage-

ment models may make bioeconomic research more relevant in the future.

The lter is applied to a ecosystem model of the commercially most im-

portant species in the Barents Sea. The simpler, aggregated stochastic

biomass models capture the complex dynamics of the pelagic stocks on

the level needed for making decisions on for example allowable catches.
Publisher
Norwegian School of Economics. Department of Management Science
Series
Discussion paper;2012:5

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