1. Aloi JE (1990) A critical review of recent freshwater periphyton field methods. Can J Fish Aquat Sci 47:656–670
2. American Public Health Association, American Water Works Association and Water Environment Federation (APHA, AWWA and WEF) (2000) Standard methods for the examination of water and wastewater, 20th edn. APHA, Washington, DC
3. Association of Clean Water Administrators (ACWA) (2012) Use of biological assessment in state water programs: focus on nutrients. ACWA, Washington, DC
4. Barbour M, Gerritsen J, Snyder BD, Stribling JB (1999) Rapid bioassessment protocols for use in streams and wadeable rivers: periphyton, benthic macroinvertebrates and fish. EPA 841-B-99-002, 3rd edn. U.S. Environmental Protection Agency, Office of Water, Washington, DC
5. Barton DR, Metcalfe-Smith JL (1992) A comparison of sampling techniques and summary indices for assessment of water quality in the Yamaska River, Québec, based on benthic macroinvertebrates. Environ Monit Assess 21:225–244