Step-by-Step

SCENARIO

In this scenario, we are going to develop a functional landscape for a newly-discovered frog species. The circular home range for the frog species is 8 hectares, and this frog species only lives in areas where the forest patch area is greater than or equal to 4 hectares. The equation on the right shows how the radius of the home range was determined.

FRAGSTATS will require you to input a shape and radius for our analysis. As demonstrated in the video, select "round" analysis with a radius of 160 meters.

The following steps will outline how to run a moving window analysis to identify areas with a suitable landscape for our frog species to live.

Step 1

Bring in your forest landcover raster into ArcGIS Pro.

Step 2

Convert the forests raster to an ASC file using the Raster to ASCII tool. When naming, make sure to add "WH" [With Header] to the file name to denote that this file still contains the raster header.

Step 3

Open the newly created .ASC file in Notepad, remove the header portion, and save this as a new file. When naming, make sure to add "NH" [No Header] to the file name to denote that this file does not have the header.

Step 4

Bring the No Header file into FRAGSTATS. Use the information from the original header to fill out required fields below.

Step 5

Select the "class metrics" option and select "Patch Area: Mean". Under the "analysis parameters" tab, select "Moving window" and fill out the fields like so. Then, hit "Run" at the top of the page.

step 6

Open up the moving window analysis file. Copy and paste the header from your original raster into the top line, and save this as a new file. When naming, make sure to add ".asc" to the end of file name.

Step 7

Bring this newly created moving window analysis ASCI file into ArcPro using the Copy Raster tool.

STEP 8

Use the Raster Calculator tool to find areas where the value is greater than or equal to 4.

Step 9

Within the symbology of our newly created raster, assign values of '0' no color. Overlay this raster on top of the original forest landcover raster (in red). The green area generated by the moving window analysis shows us where our frog species lives!

Page updated

Report abuse