-------- Original Message --------
Subject:        SILS BUlletin 08-05 Altas of Relations
Between.......Professional Paper 1650E
Date:   Thu, 10 Apr 2008 08:08:57 -0600
From:   Sheryle J Jackson <[log in to unmask]>
To:     Maps-L



*SILS Information Bulletin*

Number 08-05: Atlas of Relations Between Climatic Parameters &
Distributions of Important Trees & Shrubs in North America -
Ecoregions of North America USGS Professional Paper 1650-E (Sap# 208257)
Date: April 10, 2008
Price: $32.00 for the report (CD) plus $5.00 handling per order


Professional Paper 1650-E is the latest in the series of professional
papers titled: Atlas of Relations Between Climatic Parameters and
Distributions of Important Trees and Shrubs in North America. This
edition covers the Ecoregions of North America. Previous editions
include: Professional Papers 1650-A and 1650-B (SAP # 13796), which
together cover the introduction, conifers and hardwoods. These two
volumes are only available as a set. Professional Paper 1650-C
(SAP#13797), covers additional conifers, hardwoods and monocots and
1650-D (SAP#206908) covers the Alaska species and ecoregions.

The ecoregion-climate relations presented in this newest report is
intended to be useful for a greater understanding of ecosystem
evolution, ecosystem dynamics, and the potential effects of future
climate change on ecoregions. Climate is the primary factor controlling
the continental scale distribution of plant species, although the
relations between climatic parameters and species’ ranges are only now
beginning to be quantified. This professional paper examines the
relations between climate and the distributions of (1) Kuchler’s
“potential natural vegetation” categories for the 48 contiguous States
of the United States of America, (2) Bailey’s ecoregions of North
America, and (3) World Wildlife Fund’s ecoregions of North America. For
these analyses, a 25-kilometer equal-area grid of modern climatic and
bioclimatic parameters for North America was employed, coupled with
presence-absence data for the occurance of each ecoregion under the
three classification systems under consideration. The resulting
relations between climate and ecoregion distributions are presented in
graphical and tabular form.

To purchase this report or the other reports in the series, or for more
information on other USGS products, contact the USGS Science Information
and Library Services (SILS) at
1-888-ASK-USGS, or online through the USGS store at:
*/_http://store.usgs.gov_/**/_._/* Professional Papers 1650 A,B,and C
are available for free download at: */_http://pubs.er.usgs.gov/_/*
(Search on title). Volumes D and E are being prepared for internet release.

Sheryle Girk-Jackson 303 202 4176, FAX 303 202 4633, email:
[log in to unmask]



Sheryle J. Girk-Jackson
Technical Information Specialist/Business Acquisitions
USGS/ESIC