title: Algal assessment of threats to freshwater ecosystems: trends, challenges, and opportunities.
authors.affiliation: Office of Research and Development, National Health and Environmental Effects Research Laboratory, Atlantic Ecology Division, U.S. Environmental Protection Agency, Narragansett, Rhode Island, USA. smucker.nathan@epa.gov.
authors.forename: Nathan J
authors.initials: NJ
authors.lastname: Smucker