Calculate fragmentation for areas in hectare grid

Discussion created by benevans on May 24, 2014
Latest reply on May 27, 2014 by jimcousins
I have a shapefile showing distribution of saltmarsh areas. It contains only one class.
I want to be able to effectively overlay a 1Ha grid and calculate statistics for each cell in that grid. I'm principally interested in a metric of fragmentation, but something as simple as a ratio of total area to total perimeter within the hectare cell would probably suffice in the first instance.

I've used the grids and graticules tool to overlay a hectare grid, and intersected it with the saltmarsh layer but I'm now wondering where to go. I could export the attributes table of the resulting layer and deal with it externally, but I was hoping someone might be able to point me at how to do it withing Arc.