Changes between Version 1 and Version 2 of EwEugCompensatoryGrowth


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Timestamp:
2010-01-30 20:16:50 (10 years ago)
Author:
varunr
Comment:

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  • EwEugCompensatoryGrowth

    v1 v2  
    11== 3.14 Compensatory growth == 
    22 
    3 Compensatory growth rate responses are modelled by setting the ‘feeding time adjustment rate’ ([[Group info.htm|Group info]] form) to zero, so that simulated ''''Q/B'''' is allowed to vary with pool biomass (nonzero feeding time adjustment results in simulated organisms trying to maintain Ecopath base ''Q/B'' by varying relative feeding time).  Net production is assumed proportional (growth efficiency) to ''Q/B'', whether or not this production is due to recruitment or growth.  The ''Q/B'' increase with decreasing pool biomass is increased by decreasing vulnerability of prey to the pool ([[Vulnerabilities flow control.htm|Vulnerabilities]] form).  In the extreme as vulnerability approaches zero (donor or bottom up control), total food consumption rate ''Q'' approaches a constant (Ecopath base consumption), so ''Q/B'' becomes inversely proportional to ''B''. 
     3Compensatory growth rate responses are modelled by setting the ‘feeding time adjustment rate’ ([wiki:GroupInfo Group info] form) to zero, so that simulated ''''Q/B'''' is allowed to vary with pool biomass (nonzero feeding time adjustment results in simulated organisms trying to maintain Ecopath base ''Q/B'' by varying relative feeding time).  Net production is assumed proportional (growth efficiency) to ''Q/B'', whether or not this production is due to recruitment or growth.  The ''Q/B'' increase with decreasing pool biomass is increased by decreasing vulnerability of prey to the pool ([wiki:VulnerabilitiesFlowControl Vulnerabilities] form).  In the extreme as vulnerability approaches zero (donor or bottom up control), total food consumption rate ''Q'' approaches a constant (Ecopath base consumption), so ''Q/B'' becomes inversely proportional to ''B''.