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<br />zone between the plains-grassland and lower montane forest <br />• ecosystems. This transition zone accounts for the great divE~rsity <br />and numbers of plant species located in the area. This tran<_•ition <br />zone diversity is further enhanced by the varied topography within <br />the study site. <br />Site Vegetation: <br />Five major vegetation types are located at the site: (1J grassland; <br />(2) mountain mahogany; (3) Douglas-fir; (4) Ponderosa pine; (5) riparian <br />forest and meadow; a vegetation type (weedy vegetation, i.e.) is <br />found along roadsides and other similarly disturbed areas of ground. <br />This latter vegetation type will be described under the heading, <br />"Disturbed Areas." A map of the major vegetation types is shown in <br />Figure J-1. The boundaries between major vegetation types are shown <br />as distinct lines on the vegetation map, but in actuality thE• borders <br />of vegetation types diffuse gradually into each other. For F~urposes <br />of data collection, line transects (15m in length, 10 line tr•ansects <br />per vegetation stand-type) and Daubenmire frame guadrants (0.5m x 0.25m <br />frame; 50 frames per vegetation stand-type) were conducted iri "relatively <br />pure" stand-types (e.g., grassland vs, grass-mountain mahogany) to avoid <br />the problems encountered by sampling the ecotones (transitions) of major <br />vegetation types. <br />A list of plants recorded and observed at the project site is com- <br />piled in Appendix J-1. Table J-1 summarizes the data for they major <br />vegetation types at the site. <br />u <br />J-2 <br />