Changes between Version 2 and Version 3 of EwEugSpatialOptimizations


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Timestamp:
2010-02-08 00:35:43 (9 years ago)
Author:
varunr
Comment:

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  • EwEugSpatialOptimizations

    v2 v3  
    6868'''Objectives''' 
    6969 
    70 The objective function used in the routine is analogous to that used in Ecosim's [wiki:EwEugImplementingPolicyOptimization Policy optimization] routine. It is strongly recommended you read Spatial optimization procedures for detailed description of the objective function. 
     70The objective function used in the routine is analogous to that used in Ecosim's [wiki:EwEugImplementingPolicyOptimizationInEcospace Policy optimization] routine. It is strongly recommended you read Spatial optimization procedures for detailed description of the objective function. 
    7171 
    7272Use the '''Objectives'''table (Figure 11.3) to define objective function weights for '''Net economic value''' (total landed value of catch minus total operating cost); '''Social value (employment)''', i.e., a social indicator, assumed proportional to gross landed value of catch for each fleet with a different jobs/landed value ratio for each fleet; and two ecological objectives: 1. '''Mandated rebuilding''' of one group (value of the objective function is measured by departures of biomasses over time from target biomass levels specified by entering ratios of target to Ecopath base biomasses); and 2.''' Ecosystem structure''', which favours biomasses of large, long-lived organisms. See '''Policy objectives''' in [wiki:EwEugFishingPolicySearch Fishing policy search] and Christensen and Walters (2004b) for more details about these objectives.