(Return matching records with ALLANY of these words.)    ................................................................ state Choose State Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illiniois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississipi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming District of Columbia    regions Choose region Pacific Southwest Midwest Southeast Northeast Mountain-Prairie Alaska California-Nevada All Regions    ................................................................ ................................................................ Journal Entry   Back Phragmites Research Northeast Region, August 15, 2005 Print Friendly Version Completed a portion of phragmites research in conjunction with the University of Arizona and the USGS. The research resutled in the publication of the article "Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae)" in Marine Ecological Progress Series. Over the past 50 years, U.S. Atlantic coast salt marshes have been invaded by a non-native strain of the common reed, Phragmites australis. The non-native strain, which probably originated in Europe, grows in dense, monotypic stands that crowd out native Spartina plants and lower the habitat value of the marshes for birds, fish, and other wildlife. We reported upon the mechanisms that have allowed the non-native strain to become an invasive species. In controlled growth trials, the non-native strain was able to grow at much higher salinities than native (non-invasive) reed populations. The non-native strain also produced more shoots per gram of root tissue and had higher relative growth rates than the native populations on both freshwater and saline water treatments. The high salt tolerance of the invasive strain explains its spread in coastal salt marshes in the United States. Contact Info: Jennifer Lapis, (413) 253-8303, jennifer_lapis@fws.gov Send to: From: Notes: ..........................................................................................

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