REP15371 - Laserfiche WebLink

Home Browse Search

f ~_ • ZrJ numbers reflect the diverse vegetation types and topography occurring in these counties, more than 54 species can be expected from the vicinity of RFETS. Targeted searches for rare butterflies and moths using life history information should be conducted. At least one globally rare butterfly Hes eria ottoe. G3?/S2) is known to occur very near the Site on habitat very similar to the Xeric tallgrass communities identified above. Two state rare butterflies, Ater ,tone aroQOS and Polices origenes, use Xeric tallgrass prairie species as larval host plants. Other invertebrates possibly occurring at the Rocky Flats Environmental Technology Site, including aquatic species, may also be significant. Many terrestrial and aquatic invertebrates were collected and analyzed for the 1992 Baseline Biological Characterization Report. However, most have not been identified to the species level. Species level information is necessary in assessing conservation priorities. Several special concern bird species have been recorded at the Rocky Flats Environmental Technology Site, although most cannot be considered occurrences of conservation significance. Field surveys designed to evaluate breeding status of special concern species at RFETS may reveal new occurrences which will guide conservation and management decisions. Significant foraging grounds for peregrine falcons and bald eagles, and migratory ccncentration areas are also of interest. Further surveys for natural heritage elements identified elsewhere on the plant site should be conducted to determine the extent and quality of these occurrences. Natural heritage element occurrences reported from the Rocky Flats Environmental Technology Site, but not known from Rock Creek, include Memam's shrew CSorex merriami, G5/53) and Fork-tipped three-awn Aristida basiramea GS/S?). 7. Continue monitoring and life history investigation of Preble's meadow jumping mouse. Information from the studies being conducted at Rocky Flats Environmental Technology Site will be very valuable in determining proper conservation actions to protect this species. [t is critical that this information is shared vvrith other organizations and agencies so that they may fine tune their inventory efforts.