The Tabulate Areas tool allows users to compute, report, and archive total and suitable habitat areas. Options are provided for Use Suitabilities, selecting the desired flow regimes and relationships, mode of comparison for multiple flow regimes, output units, and the file and path name of the report to be generated by GeoEFM (Figure 15).
Figure 15. Reporting - Tabulate Areas allows users to compute, tabulate, and compare habitat areas.
As in EFM, only one flow regime may be selected as the reference. Habitat areas generated by flow regimes selected in the “Flow Regime (compare)” fields will be compared to habitat areas generated by this reference in accordance with the Change from Reference setting. When the Run button is clicked, GeoEFM assesses area for the identified layer of each flow regime - relationship pairing as specified in the tool interface (Figure 16).
Figure 16. Applying Tabulate Areas to compute habitat areas for flow regimes and relationships.
A “ReportName.html” file is generated that can be opened in web browsers and other software (Figure 17). Results can also be copy-pasted from that table to other software applications for word processing and use in spreadsheets.
Figure 17. Table of habitat areas for flow regimes and relationships.
The Use Suitabilities option allows for reporting of suitable areas in addition to the total areas (Figure 18) tabulated for results layers when the option is turned off. Tallying suitable area is done by summing the product of raster cell areas and corresponding raster cell values, with value intended to be a measure of suitability ranging from 0 (wholly unsuitable) to 1 (perfectly suitable). Total areas are computed by summing raster cell areas, which means that if a cell is part of the result layer, it is habitat and tallied as such (as if it were wholly suitable). Please note that GeoEFM does not process suitable habitat areas when selected layers have values outside of the normal range of suitabilities (0 to 1).
Figure 18. Options and settings for the Tabulate Spatial Results interface in GeoEFM.