Changes between Version 2 and Version 3 of EwEugApplyForcingFunctionConsumer


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Timestamp:
2010-11-23 02:33:14 (9 years ago)
Author:
shermanl
Comment:

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  • EwEugApplyForcingFunctionConsumer

    v2 v3  
    11== 8.10 Apply forcing function (consumer) == 
    2 Forcing functions represent physical or other environmental parameters that may influence trophic interactions. These forcing functions can be used to modify the Q/B ratio of the consumer groups in the model (see [[Linking mediation and time.htm|Linking mediation and time forcing functions to trophic interaction rates]]), or to directly influence primary production (see [[Primary production.htm|Primary production in Ecosim]]). 
     2Forcing functions represent physical or other environmental parameters that may influence trophic interactions. These forcing functions can be used to modify the Q/B ratio of the consumer groups in the model (see [EwEugLinkingMediationAndTimeForcingFunctionsToTrophicInteractionRates Linking mediation and time forcing functions to trophic interaction rates]), or to directly influence primary production (see [EwEugPrimaryProduction Primary production in Ecosim]). 
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    4 To apply a forcing function to trophic flows (i.e., predator-prey interactions), use the ''Apply FF (consumer)'' form (''Time dynamic (Ecosim) > Input > Apply FF (consumer)'')'. To apply a forcing function to primary productivity directly, use the Apply FF (primary producer) form. Before using either ''Apply FF'' form, you must first define at least one seasonal or long-term forcing function instructions for using the Forcing function form. 
     4To apply a forcing function to trophic flows (i.e., predator-prey interactions), use the ''Apply FF (consumer)'' form (''Time dynamic (Ecosim) > Input > Apply FF (consumer)''). To apply a forcing function to primary productivity directly, use the Apply FF (primary producer) form. Before using either ''Apply FF'' form, you must first define at least one seasonal or long-term forcing function instructions for using the Forcing function form. 
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    66The ''Apply FF (consumer) ''form consists of a grid representing predator (''j'') / prey (''i'') interactions (Figure 8.18). Predators are represented in columns with prey in rows. Predator/prey interactions, as defined in the [wiki:EwEugDietComposition Diet composition] are indicated by white cells. 
     
    1717The selected modifier will be shown in the window ''Applied shape functions'' window (Figure 8.19). 
    1818 
    19 Next, select the desired forcing or seasonal shape from the ''Available shape functions'' window at the left of the dialogue box by clicking the green arrow. This will move the shape function into the Applied shape functions window. You can remove a shape from this window by clicking the remove button immediately below the green arrow. Note that a common form is used to apply Mediation and Seasonal/Forcing functions. __Do not select a mediation function.__ 
     19Next, select the desired forcing or seasonal shape from the ''Available shape functions'' window at the left of the dialogue box by clicking the green arrow. This will move the shape function into the Applied shape functions window. You can remove a shape from this window by clicking the remove button immediately below the green arrow. Note that a common form is used to apply Mediation and Seasonal / Forcing functions. __Do not select a mediation function.__ 
    2020 
    2121Finally, click ''OK''. You should see the number of the forcing or seasonal function you selected in the predator/prey cell (preceded by ‘F’).