The Birds of the Americas Family Richness Grids of the Gridded Species Distribution, Version 1 are the aggregations of the Presence Grids data at the |
family level. They are available in 30-arc second (1 kilometer) resolutions. The cell values represent the number of species in a particular family. The input vector layers were produced by
a consortium led by NatureServe. The gridding and grid processing are done by the Columbia University Center for International Earth Science Information Network (CIESIN).
To provide a gridded version of existing vector maps of bird species aggregations at the family level at 1- kilometer spatial resolution, which in
turn can be used in modeling efforts, wildlife conservation planning, natural resource management, policy-making, biodiversity studies and human-environment interactions.