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UPDATED NATURAL RESOURCES INVENTORY FOR <br />SOUTH OF DIVIDE STUDY AREA <br />• Riparian areas do not have as formal a definition as wetlands. Riparian areas are typically <br />defined as areas along streams and rivers dominated by plants adapted to higher moisture <br />conditions. WWE met with the USFS staff (Michaei Wazd, Barry Johnston, and Andrea Wang in <br />August 1995; Barry Johnston in September 2004) to create a working definition of riparian areas <br />for this inventory. Based on these meetings, riparian areas have been defined as: (1) all wetlands <br />and (2) other areas dominated by key riparian "indicator species." Key indicator riparian species <br />include the species listed in Tables 1 and 2. <br />TABLE 2 <br />Riparian Indicator Species' <br />• <br />Stratum Common Scientific Name <br />Trees Box elder Negundo aceroides <br /> Mountain maple Acer glabrum <br /> Narrowleaf cottonwood Populus angustifolia <br /> Blue spruce Picea pungens <br />Shrubs Willows Salix spp. <br /> Hawthorn Crataegus erythropoda <br /> Redtwig dogwood Suida sericea <br /> Wild rose Rosa woodsii <br />Grasses/Forbs Western coneflower Rudbeckia occidentalis <br /> Cow parsnip Heracleum lanatum <br /> Sedges Carex spp. <br /> Rushes Juncus spp., Scirpus spp. <br /> Stinging nettles Urtica dioica <br />Riparian areas may also include the species listed in Table 1 <br />Aspen is more prevalent in the eastern portion of the study area. Engleman spruce (Picea <br />engelmannii), subalpine fir, lodge pole pine, and aspen occur at the highest portions of the site in <br />the southeast corner of the study area. <br />3.0 STUDY METHODS <br />A combination of fieldwork, office research, and aerial photograph interpretation was used for <br />this investigation. Office research included review of previous inventory reports by WWE <br />completed in 1997, associated correspondence, and several communications with USFS <br />831-032.670 Wright Waier Engineers, lnc. Page 4 <br />May 2005 <br />