. Assessment of the Red Rock River subbasin and wetlands of the Centennial Valley . Watershed ecology; Wetland ecology; Aquatic ecology; Watershed management; Wetlands; Watershed assessment; Wetland assessment; Aquatic assessment. The results are summarized below. Wetland and Riparian Assessments Of the 103 lentic and lotic sites assessed with PFC methodology, we found: •74 in Proper Functioning Condition; • 19 Functional at Risk with a downward trend; •3 Functional at Risk with an undetermined trend; •7 Nonfunctional. All lotic sites sampled (8) were in Proper Functioning Condition. Of 83 sam
. Assessment of the Red Rock River subbasin and wetlands of the Centennial Valley . Watershed ecology; Wetland ecology; Aquatic ecology; Watershed management; Wetlands; Watershed assessment; Wetland assessment; Aquatic assessment. The results are summarized below. Wetland and Riparian Assessments Of the 103 lentic and lotic sites assessed with PFC methodology, we found: •74 in Proper Functioning Condition; • 19 Functional at Risk with a downward trend; •3 Functional at Risk with an undetermined trend; •7 Nonfunctional. All lotic sites sampled (8) were in Proper Functioning Condition. Of 83 sampling sites believed to be or immediately adjacent to BLM-managed lands, we found: water, trap sediments, and filter nutrients. If the hummocking and pugging increase, we anticipate loss of function within less than a decade in many cases. We also note that several of the FAR wetlands where we saw severe impacts are fens, a relatively uncommon wetland type in southwestern Montana. In four cases where wetlands were found to be functional at risk, we found that the factors affecting the wetlands were beyond BLM management control. In one case, adjacent private land use is severely impacting a fen (Figure 12); in the other three, the factors ranged from road encroachment to dredging to the effects of drought. Most of the Nonfunctional wetlands were also the result of factors beyond management control: drying out of old beaver ponds, drainage by roads, or succession from wet to dry meadows. •56 in Proper Functioning Condition with a stable trend; • 17 Functional at Risk with a downward trend; •3 Functional at Risk with an undetermined trend; •7 Nonfunctional Overall, we found that the wetlands in the Centennial Valley exhibit a good degree of ecological integrity. Species richness is reasonably high (Appendix D), although most plant communities are dominated by plants with a high tolerance for disturbance. Most of the sites that were found to be in PFC were ranked a
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