Changes between Version 2 and Version 3 of EwEugModellingEffortDynamics


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Timestamp:
2010-01-31 15:17:58 (9 years ago)
Author:
varunr
Comment:

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  • EwEugModellingEffortDynamics

    v2 v3  
    1818These response scales are represented in Ecosim by two ‘state variables’ for each gear type ''g''. 
    1919 
    20 === Fast time response model === 
     20'''Fast time response model''' 
     21 
    2122Eg,t is the current amount of active, searching gear (scaled to 1.0 at the Ecopath base fishing mortality rates), and Kg,t is the fleet effort capacity (Eg,t<Kg,t). 
    2223 
     
    3940'''Figure 3.12''' Effect of the ‘heterogeneity’ parameter, ''p'', on effort/income function. 
    4041 
    41 === Slow time reponse model === 
     42'''Slow time reponse model''' 
     43 
    4244For each fleet, slow effort responses are modelled as changes in fleet capacity (''K'',,''g,t'',,), which is a function of the capital depreciation rate ''ρ,,g,,'', the capital growth rate ''r'',,''g,t'',,'and profit ''PR'',,''g,t'',,. The capital growth rate is calculated via a growth factor ''gf'',,''g'',,,t, i.e., 
    4345