Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America

This atlas explores the continental-scale relations between the geographic
ranges of woody plant species and climate in North America. A 25-km equal-area
grid of modern climatic and bioclimatic parameters was constructed from
instrumental weather records. The geographic distributions of selected tree and
shrub species were digitized, and the presence or absence of each species was
determined for each cell on the 25-km grid, thus providing a basis for
comparing climatic data and species' distributions. The relations between
climate and plant distributions are explored in graphical and tabular form. The
results of this effort are primarily intended for use in biogeographic,
paleoclimatic, and global-change research.

These web pages provide access to the text, digital representations of figures,
and supplemental data files from USGS Professional Paper 1650, chapters A and
B. A printed set of these volumes can be ordered from the USGS at a cost of
US$63.00. To order, please call or write:

USGS Information Services
Box 25286
Denver Federal Center
Denver, CO 80225
Tel: [phone]; Fax: [phone]

[Summary provided by the USGS.]