Appendix 3

Appendix 3. Map Data.

Eighteen of the maps that were used in the analysis are available for download as binary raster files with metadata. The maps portray three themes - forest fragmentation, forest area density, and forest connectivity - at 1 km² resolution for five continents and for the globe, for the smallest window size (81 km²) that was used in the analysis. The maps of forest fragmentation correspond to the maps shown in Figures 5, 9, 10, 11, 12, and 13 of the manuscript. Forest area density and forest connectivity are the Pf and Pff components, respectively, of the fragmentation index (Fig. 3). With these two components, anyone can revise the critical values that we chose for our implementation of the fragmentation index model.

Please note that the maps are in a generic binary format that is suitable for import into most geographic information systems. They are quite large (1 to 14 MB, compressed) and the format is not suitable for viewing by a web browser or other common image viewers. The map files all have the suffix ".bsq.gz" indicating band-sequential format and compressed by using gzip. The bsq-format files are all single-band, one byte per pixel, in row-major order. The header file associated with each map contains information needed by geographic information systems when importing the maps (number of rows and columns, pixel size, corner coordinates, etc). The given format works with the IMAGEGRID command in ARCINFO software but has not been tested with other software. The same information is contained in the metadata document if a different format is needed.

While procedures will vary with the user's software, importing a map typically involves uncompressing (with gunzip) the bsq.gz file, preparing a separate "header" file, issuing the appropriate import command from the user's software, and finally specifying the geographic projection information. Please consult the metadata document for details.

The 18 derived maps are documented in a single metadata file (view metadata, dowload metadata).

Africa maps

Forest area density index, (header)

Forest connectivity index, (header)

Forest fragmentation index, (header)

Australia-Pacific maps

Forest area density index, (header)

Forest connectivity index, (header)

Forest fragmentation index, (header)

Europe-Asia maps

Forest area density index, (header)

Forest connectivity index, (header)