With Ecospace loaded, the habitat capacity model is configured in four steps:
The habitat capacity model requires a map layer for each environmental factor that you wish to include. These layers are not provided in an Ecospace scenario, and are up to you to define. This is done via Menu > Ecospace> Define Environmental input Layers (Figure 1)
Figure 1 - Start defining environmental input layers
This brings up an Add/Edit/Delete interface that resembles forms to manage fleets, habitats, MPA?s, etc (Figure 2). Here you can add new layers, modify or delete existing layers. Note that the terms ?map? and ?layer? are freely used interchangeably, which perhaps should not be so.
Figure 2 - Define environmental input layers
Anyway, once your layers are defined you can provide the layers with data in the Ecospace maps interface.
Once the layers have been defined you can enter values in the environmental input layers (Figure 3)
Figure 3 - Populate environmental input layers
Functional groups respond to the environmental drivers via a mediation-like structure. You will need to define these curves via Navigation Tree > Ecospace > Input > Habitat based foraging.
Figure 4 - Foraging response configuration form
The foraging response configuration interface has three components:
As in mediation, a single response function can be used by any number of groups. You can reshape and rename functions with the ?Values? and ?Change shape? options on the sketchpad toolbar. Next, we?ll apply the foraging response to the environmental drivers.
Next, define which functional groups use the response curves that you defined, and to what environmental driver the response applies. This interface is accessed through the ?Set input values? on the capacity panel (Figure 4).
This brings up the ?foraging area response to input maps? interface (Figure 5) for a single response function.
Figure 5 - Foraging area response interface
In this interface, the configured components are put together. Here, users define how groups respond to environmental drivers for the selected environmental response function.
The panels perform as follows:
Check that capacity calculations do use the capacity model in the Ecospace parameters form (Figure 6)
Figure 6 - Ecospace parameters to check for capacity
The resulting capacity map can be viewed in the Ecospace map
Figure 7 - Computed capacity