Changes between Version 1 and Version 2 of EwEughDefinitionOfFleets


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Timestamp:
2010-11-23 01:07:32 (8 years ago)
Author:
shermanl
Comment:

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  • EwEughDefinitionOfFleets

    v1 v2  
    44'''Fixed cost''' 
    55 
    6 Fixed cost is the cost of operating a fleet unit, independent of effort, in the unit time defined in Ecopath (typically on annual basis). The definition of ‘fixed’ costs depends on the actual situation being modelled. To illustrate this consider some examples: 
     6Fixed cost is the cost of operating a fleet unit, independent of effort, in the unit time defined in Ecopath (typically on annual basis). The definition of 'fixed' costs depends on the actual situation being modelled. To illustrate this consider some examples: 
    77 
    8 A new module of Ecospace, Ecoseed, allows for effort reduction to nil in connection with simulated increase in protected areas from 0 to 100% of total model area. As the last boats operating in a fleet cannot bear the total ‘fixed’ costs of the total fleet; they should only bear the ‘fixed’ costs that are independent of effort. For this type of application use the ‘fixed costs’ only for costs that are independent of effort at the fleet scale, for instance for the costs of management and monitoring, (and subsidies if there are fixed subsidies to the fleet). Costs that are capacity dependent in this situation should be considered effort-related variable costs instead. 
     8A new module of Ecospace, Ecoseed, allows for effort reduction to nil in connection with simulated increase in protected areas from 0 to 100% of total model area. As the last boats operating in a fleet cannot bear the total 'fixed' costs of the total fleet; they should only bear the 'fixed' costs that are independent of effort. For this type of application use the 'fixed costs' only for costs that are independent of effort at the fleet scale, for instance for the costs of management and monitoring, (and subsidies if there are fixed subsidies to the fleet). Costs that are capacity dependent in this situation should be considered effort-related variable costs instead. 
    99 
    1010Effort can also be changed in Ecosim: 
     
    3333'''Total value''' 
    3434 
    35 The total value is the value of all landings (as entered on subsequent forms). It is displayed here only to indicate that the ‘100 %’ relates to value, not to total costs.. 
     35The total value is the value of all landings (as entered on subsequent forms). It is displayed here only to indicate that the '100 %' relates to value, not to total costs..