TY - RPRT TI - The Effects of Urbanization and Other Environmental Gradients on Algal Assemblages in Nine Metropolitan Areas across the United States AU - James F. Coles AU - Amanda H. Bell AU - Barbara C. Scudder AU - Kurt D. Carpenter PY - 2009 DO - 10.3133/sir20095022 UR - https://pubs.usgs.gov/publication/sir20095022 ID - sir20095022 ER -