. 2012 survey assessments and analysis of fish, macroinvertebrates and herpetofauna in the Otter Creek coal tracts area of Powder River County. Aquatic ecology; Aquatic invertebrates; Fishes; Amphibians; Reptiles. Amphibian and Reptile Observations. Overall, eight herpetofauna species were observed, collected in dipnets/seines or incidentally recorded Table 6. Vertebrates (Species Code) recorded during the in conjunction with the 2012 surveys. Otter Creek 2012 otter Creel< Surreys. Frequency of Occurrence (FO) was calculated from tfie # of site visits detected / # of visits #22 and #16 were
. 2012 survey assessments and analysis of fish, macroinvertebrates and herpetofauna in the Otter Creek coal tracts area of Powder River County. Aquatic ecology; Aquatic invertebrates; Fishes; Amphibians; Reptiles. Amphibian and Reptile Observations. Overall, eight herpetofauna species were observed, collected in dipnets/seines or incidentally recorded Table 6. Vertebrates (Species Code) recorded during the in conjunction with the 2012 surveys. Otter Creek 2012 otter Creel< Surreys. Frequency of Occurrence (FO) was calculated from tfie # of site visits detected / # of visits #22 and #16 were the most diverse sites reporting capable for detection: Herps (n=21) and Flsfi (n=16). Porportion of individuals out of total. * = Introduced Species five herpetofuana species cumulatively across all seasons. We reported four amphibian species, of which. Northern Leopard Frog (Rana pipiens) had the highest site detection, occurring at five of seven sites, followed by the Woodhouse's Toad (Bufo woodhousii), which was highest in 2011, and Boreal Chorus Frog (Pseudacris maculata) recorded at four and three sites, respectively (Table 6). The Woodhouse's Toad contributed the highest percent of individuals because of the pool of tadpoles (~100) detected at Tenmile Creek. The Boreal Chorus Frog was detected vocally calling at two sites during the spring visits with tadpoles detected during the same visit at Tenmile Creek and two incidental sightings during summer visits. We also recorded four reptile species (in order of site occurrence): Painted Turtle (Chrysemys picta) (Figure 10), Western Rattlesnake, (Crotalus viridis) and Snapping Turtle (Chelydra serpentina)(MJ SOC) and Terrestrial Garter Snake, (Thamnophis elegans) (Table 6). Figure 13. Snapping Turtle (yearling) (left) and Painted Turtle adult (right) from Otter Creek JT. Herpetofauna Visits Det FO %of total ind. Northern Leopard Frog (RAPI) 7 Woodhouse's Toad (BUWO) 6 Boreal Chorus Frog (PSMA) 4
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