TY - RPRT TI - Sampling effort and estimates of species richness based on prepositioned area electrofisher samples AU - Zachary H. Bowen AU - Mary C. Freeman PY - 2011 DO - 10.1577/1548-8675(1998)018<0144:seaeos>2.0.co;2 UR - https://pubs.usgs.gov/publication/5223321 ID - 5223321 ER -