Here you can download data and documentation produced by biodiversity research projects sponsored, in part, by the US Environmental Protection Agency.

Vertebrate occurrence data for original EMAP grid hexagons.  These files contain presence/absence occurrence data for native vertebrate species for the Pacific Northwest states (OR, WA) and for the Middle Atlantic states (PA, WV, VA, MD, DE), of the USA, using the 648 square kilometer hexagons.

Environmental data for original EMAP grid hexagons.  These files contain data for climatic, topographical, land cover, and other variables for all 648 square kilometer hexagons across the conterminous USA (lower 48 states).

Iowa watersheds vertebrate-habitat data.  These files contain data on habitat preferences for non-fish vertebrate species presumed to occur in two small watersheds in central Iowa, USA.

Iowa watersheds plant data.  These files contain data on habitat and soil preferences for plant species presumed to occur in two small watersheds in central Iowa, USA.

Iowa watersheds GIS data.  These files contain GIS layers for scenario maps and soils maps for the Iowa watersheds.

Monroe County vertebrate-habitat data.  These files contain data on habitat presence/absence and area requirements for non-fish vertebrate species presumed to occur in this county in "the heart of the Poconos" in Pennsylvania, USA.

Muddy Creek watershed vertebrate-habitat data.  These files contain data on habitat preferences for non-fish vertebrate species presumed to occur in this 320 square kilometer watershed in Oregon, USA.

Willamette River Basin vertebrate-habitat data.  These files contain data on habitat preferences, adjacency rules, and geographic ranges for non-fish vertebrate species presumed to occur in this 30,000 square kilometer river basin in Oregon, USA.