Supplement 1. A vector file of polygon fragment boundaries used in this study in KML format.

File List
CAO_kipuka_boundaries_20131204.kml (MD5: 9cd3a0afdd95797b21e41515140be36d) A polygon vector GIS layer of the fragment boundaries.

Description
Description

These boundaries were computed using utilities packaged with the GDAL library (http://www.gdal.org) under the following methodology:

We used gdalwarp and gdal_translate to stack the computed vegetation height and NDVI images onto the same grid at 2.0m resolution. Cubic spline interpolation as used.
We used gdal_calc.py create a binary mask of cells meeting the following thresholds: Canopy height > 3.0 and NDVI > 0.7.
We used gdal_sieve.py to groups less than 50 cells (0.02ha) with 8-connectedness.
The remaining groups were polygonized using the utility gdal_polygonize.py
Finally, the boundaries of these groups were rounded slightly using the -simplify flag of the ogr2ogr utility. Tolerance value (maximum distance segment can move when removing a node) was 2.0.