This multi-tiered, broad-scale, hierarchical system of ecoregions is based on numerous environmental variables at each level. The first two tiers are based on climate, followed by climate and physiograpghy, and finally topography and soils. This data was used to provide a general description of the ecosystem geography.
ScienceBase brings together the best information it can find about USGS researchers and offices
to show connections to publications, projects, and data. We are still working to improve this
process and information is by no means complete. If you don't see everything you know is associated
with you, a colleague, or your office, please be patient while we work to connect the dots.
Feel free to contact firstname.lastname@example.org.