Changes between Version 1 and Version 2 of EwEugCompensatoryNaturalMortality


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Timestamp:
2010-01-30 20:29:43 (10 years ago)
Author:
varunr
Comment:

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  • EwEugCompensatoryNaturalMortality

    v1 v2  
    11== 3.15 Compensatory natural mortality == 
    22 
    3 Compensatory changes in natural mortality rate (''M'') can be simulated by combining two effects: nonzero ‘Feeding time adjustment rate’ (set on the [wiki:GroupInfo Group info] form), and either high ''EE'' from Ecopath or high proportion of Mo due to predation (unexplained predation > 0).  With these settings, especially when [wiki:VulnerabilitiesFlowControl Vulnerabilities] of prey to a group are low, decreases in biomass lead to reduced feeding time, which leads to proportional reduction in natural mortality rate. 
     3Compensatory changes in natural mortality rate (''M'') can be simulated by combining two effects: nonzero ‘Feeding time adjustment rate’ (set on the [wiki:EwEugGroupInfo Group info] form), and either high ''EE'' from Ecopath or high proportion of Mo due to predation (unexplained predation > 0).  With these settings, especially when [wiki:EwEugVulnerabilitiesFlowControl Vulnerabilities] of prey to a group are low, decreases in biomass lead to reduced feeding time, which leads to proportional reduction in natural mortality rate.