GIS data for Phragmites australis distribution in Rhode Island

The above link is to data downloadable in geodatabase format (a common GIS file format, ESRI, Inc.). This database is only a ‘representative’ subset of populations of P. australis in Rhode Island. We are incorporating more stands into the database as they are screened. We encourage conservation scientists and managers throughout New England to contribute to this database by sending native and exotic population coordinates and attribute data for each location to Adam Lambert. This information will be incorporated into the current database, and will be updated quarterly.

    
GIS map showing native and exotic populations of P. australis in Rhode Island (left) and on Block Island, RI (right). Through chloroplast DNA sequencing, the native population at the Block Island Conservancy was found to be a previously unidentified native haplotype (AB, K. Saltonstall, personal communication). The other native populations were tested by RFLP analysis, and have the same morphological characteristics as the native Block Island Conservancy stand.

Reference

Lambert, A,M. and R.A. Casagrande. 2006. Distribution of Native and Exotic Phragmites australis in Rhode Island. Northeastern Naturalist 13: 551-560..