1. Askins, R. A., Lynch, J. F., & Greenburg, R. (1990). Population declines in migratory birds in eastern North America. Current Ornithology, 7, 1–57.
2. Barbour, M. T., Gerritsen, J., Snyder, B. D., & Stribling, J. B. (1999). Rapid bioassessment protocols for use in streams and wadeable rivers: Periphyton, benthic macroinvertebrates, and fish. Second Edition (No. EPA 841-B-99–022) (pp. 1–339). Washington, D.C.: U.S. Environmental Protection Agency; Office of Water.
3. Bazinet, N. L., Gilbert, B. M., & Wallace, A. M. (2010). A comparison of urbanization effects on stream benthic macroinvertebrates and water chemistry in an urban and an urbanizing basin in southern Ontario, Canada. Water Quality Research Journal, 45(3), 327–341. https://doi.org/10.2166/wqrj.2010.035
4. Benke, A. C., Huryn, A. D., Smock, L. A., & Wallace, J. B. (1999). Length-mass relationships for freshwater macroinvertebrates in North America with particular reference to the southeastern United States. Journal of the North American Benthological Society, 18(3), 308–343.
5. Borcard, D., Gillet, F., & Legendre, P. (2011). Numerical ecology with R. Springer.