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Habitat Risk Assessment - Buffer Issue
I am working with the HRA model but when I finally ran the model with all its pressures I got some doubts about the results when using a buffer:
I'll explain my doubts using the attached Image:
The upper left image shows one of the habitats.
The upper right images shows the shapefile of the stressor.
The lower left image shows the buffered stressor (from intermediary folder Invest).
The lower right image shows the Habitat-Stressor Risk (from intermediary folder Invest).
The buffered stressor shows an exponential decay as chosen in the HRA Interface. However,when we look at the risk image we see a decreasing risk which starts increasing again after a certain distance (Red-->Orange-->Yellow-->Orange while we expect Red-->Orange-->Yellow-->Blue). This seems odd to me so I am wondering if you have any clue why this happens?
Please let me know if you need any more information.