Skip Links

USGS - science for a changing world

Professional Paper 1650-D

Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America—Alaska Species and Ecoregions

By Robert S. Thompson, Katherine H. Anderson, Laura E. Strickland, Sarah L. Shafer, Richard T. Pelltier, and Patrick J. Bartlein


Thumbnail of and link to report PDF (29.2 MB)

Climate is the primary factor in controlling the continental-scale distribution of plant species, although the relations between climatic parameters and species’ ranges is only now beginning to be quantified. Preceding volumes of this atlas explored the continental-scale relations between climatic parameters and the distributions of woody plant species across all of the continent of North America. This volume presents similar information for important woody species, groups of species, and ecoregions in more detail for the State of Alaska. For these analyses, we constructed a 25-kilometer equal-area grid of modern climatic and bioclimatic parameters for North America from instrumental weather records. We obtained a digital representation of the geographic distribution of each species or ecoregion, either from a published source or by digitizing the published distributions ourselves. The presence or absence of each species or ecoregion was then determined for each point on the 25-kilometer grid, thus providing a basis for comparison of the climatic data with the geographic distribution of each species or ecoregion. The relations between climate and these distributions are presented in graphical and tabular form.

Version 1.0

Posted October 2008

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Thompson, Robert S., Anderson, Katherine H., Strickland, Laura E., Shafer, Sarah L., Pelltier, Richard T., and Bartlein, Patrick J., 2006, Atlas of relations between climatic parameters and distributions of important trees and shrubs in North America— Alaska species and ecoregions: U.S. Geological Survey Professional Paper 1650–D, 342 pages.




Sources of Species and Ecoregion Data

Internet Availability


References Cited

Accessibility FOIA Privacy Policies and Notices

Take Pride in America home page. FirstGov button U.S. Department of the Interior | U.S. Geological Survey
Questions or Assistance: Contact USGS
Last modified: Wednesday, 30-Aug-2023 10:43:26 EDT