2012 survey assessments and analysis 2012 survey assessments and analysis of fish, macroinvertebrates and herpetofauna in the Otter Creek coal tracts area of Powder River County Eb339133-a249-4662-ac73-98bf02e1e686 Year: 2013 to intact vegetation buffers and less sediment in the aquatic environment (George et al. 2002). During both years of the study, macroinvertebrate communities assessed by the MM! ranked few sites as impaired, even those with an obvious impaired riparian condition and in-stream habitat limitations. The effectiveness of macroinvertebrate communities in assessing prairie str
2012 survey assessments and analysis 2012 survey assessments and analysis of fish, macroinvertebrates and herpetofauna in the Otter Creek coal tracts area of Powder River County Eb339133-a249-4662-ac73-98bf02e1e686 Year: 2013 to intact vegetation buffers and less sediment in the aquatic environment (George et al. 2002). During both years of the study, macroinvertebrate communities assessed by the MM! ranked few sites as impaired, even those with an obvious impaired riparian condition and in-stream habitat limitations. The effectiveness of macroinvertebrate communities in assessing prairie stream impairment, especially for sediment, is still under debate in Montana. Community results from the habitat, fish and macroinvertebrate surveys combined to rank the following sites from highest biological integrity to lowest within their aquatic ecological classification codes: Northwestern Great Plains Perennial Prairie Stream (AES code C005)-l) Otter Creek #22, 2) Otter Creek #2, 3) Otter Creek #16, 4) Otter Creek -J Trusler site Site Photos Otter Creek #22 (control) during spring 2012 visit: pools (left) and manipulated riffle (right) 22
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