PREDATOR guidance and files

PREDATOR: Guidance for Using Oregon DEQ's Predicative
Stream Bioassessment Model

Jeff Adams (Xerces), Shannon Hubler (OR DEQ), and Logan Lauvray (Xerces)

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Obtaining PREDATOR Environmental Variables

Western Coastal Forest (MWCF) * Western Cordillera and Columbia Plateau (WCCP)

Macro_Invert_Data.db1.mdb

The bug data file is the same regardless of which model you need to use. The environmental variables are quite different, so now it's time to choose a model - Marine Western Coastal Forest (OR_MWCF), Western Cordillera and Columbia Plateau (OR_WCCP), or the Basin and Range Null model. If sites from your watershed are in both models, you will need to run each model separately.

The table below shows the environmental variables required for each model. Select the appropriate model to learn how to obtain the appropriate environmental variables. If you're using the database provided with this guidance, the database queries will automatically sort your samples into the appropriate models.

[You'll need ArcView (this guide is based on version 3.2) to obtain some of the WCCP variables.]

Marine Western Coastal Forest
OR_MWCF

sample (sample ID, corresponds to bug file)
daynum (Day number from 1 January)
long (longitude in decimal degrees to five decimal places)

Western Cordillera and Columbia Plateau

OR_WCCP

sample (sample ID, corresponds to bug file)
east (Yes =1, No = 0)
elev (Convert to Meters - Elevation in Feet / 3.2808 then square root with no decimal places
precip (Range * 10 with no decimal places))
temp (Gridcode / 10 with no decimal places)

Basin and Range
Null Model

(no environmental variables needed - see Null Model description)

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