Examples of ARISA profiles. (A) Reproducibility of ARISA fingerprints, as exemplified by profiles from replicate filters. The profiles were generated from May samples of Koshkonong Lake (southern, drainage, hypereutrophic). Replicate 1, black; replicate 2, dark gray; replicate 3, light gray. (B) July profile from Koshkonong Lake. (C) October profile from Koshkonong Lake. (D) October profile from Firefly Lake (northern, seepage, oligotrophic). (E) October profile from Blueberry Lake (northern, seepage, mesotrophic). (F) October profile from Hook Lake (southern, seepage, humic). (G) October profile from White Sand Lake (northern, drainage, oligotrophic).