WED
Research Update
February, 2003
Surface water chemistry research
confirms success of 1990 Clean Air Act
Tracking 16 years of change to wetlands in an urbanizing area
Can changes in farming affect water quality and biodiversity?
Carbon dioxide and nitrogen effects on ponderosa pine roots
Two approaches for selecting areas for preserving biodiversity
Carolinas, Nevada and Oregon added to ecoregion map series
A cost-effective method for making wildlife risk assessments
Court decision creates need for information on isolated wetlands
Web page provides information on monitoring aquatic resources
Database provides history of ozone in San Bernardino Mountains
Burrowing shrimp have important impact on NW estuaries
![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif)