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2.0 SAMPLING METHODS <br />2.1 Cpmmuniri Tvce Maooina <br />As indicated above, a detailed vegetation community /land use map of the vegetation study area <br />and an appropriate buffer zone was a necessary first step in the overall floristic evaluation. In this regard, <br />stereo-paired black and white aerial photos exposed on June 26, 1999 at a scale of 1" = 500' were <br />carefully reviewed to facilitate stratification of the study area into eight segregate units. Stratification was <br />based on identifiable dominant floral species and ! or land use-related characteristics. These units, were: <br />1) areas of derelict land, rights-of-way, or patches of fallow land; <br />2) managed pastureland; <br />3) irrigated hayland; <br />4) orchard; <br />5) wetland; <br />6) ripadan area; <br />7) azeas of disturbed surtace, residences, roads, and industrial facilities; and <br />8) pinorrjuniper woodland and mountain brush communities (adjacent to the study area). <br />These eight stratified types were then the basis for the five designated plant communities and one land <br />use type discussed within this document with a sixth plant community found entirely external to the study <br />area, but within the buffer area. These segregate types are listed below. Units 1 - 5 are the five <br />designated plant communities internal to the vegetation study area, unit 6 the land use type, and unit 7 <br />the plant community found external to the study area. <br />1) Derelict areas; <br />2) Pasture; <br />3) Irdgated Hayland; <br />4) Orchard; <br />5) Riparian !Wetland; <br />6) Residential /Industrial Facilities; <br />7) Pinon-Juniper Woodland and Mountain Brush communities. <br />The riparian area and wetland comntunRies are similar in both form and function, and because they <br />are largely external to the study area, they have been combined into a single unit. Only one aae of this <br />combined type extends into the vegetation study area. However, because of differences in land <br />management practices by the various landowners, the riparian /wetland type is discussed separately as <br />four subunits (see Map V-1). <br />• Initial interpretation of community boundaries was made possible by use of a large Tormat <br />stereoscope. Interpretations were made directly on acetate overlays of the individual photos and were <br />2~®~ ~~oS ADCm¢~~7[Re, luc Page 4 Exhibit 5 -Bowie Baseline Vegetation Survey <br />