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I• <br />(i.e. within a 2 x 50 meter quadrat ). DBH was determined for each mature <br />individual and average height was established with a clinometer for mature <br />trees along the transect. Trees were grouped as mature individuals (DBH <br />greater than 2 inches), saplings (DBH less than 2 inches) and standing dead <br />(snags). <br />2.5 SAMPLE ADEQUACY <br />Adequacy of sampling was determined periodically during field sampling. <br />utilizing the following equation from Snedecor and Cochran (1967). <br />n min = t2s2/(dx)2 <br />where: <br />n min = the minimum number of observations needed <br />t = the distribution value at a given confidence <br />level (CL);i.e. 1.64(90%CL) forgrasslandcommunities <br />and 1.282 (60% CL) for shrubland communities <br />s2 =the sample variance <br />. d2 = 10% level of accuracy, or 0.1 <br />z =the sample mean <br />An adequate sample for each parameter; (cover and production,) was <br />determined in each vegetation type by exceeding the n min requirement <br />obtained form the equation with a minimum of 15 samples. <br />2.6 DATA ANALYSIS <br />2.6.1 Cover Data <br />Cover data were summarized by determining the mean percent cover, <br />relative percent cover, and standard deviation for each species, lifeform <br />group, rock, litter, and bare ground within each vegetation type sampled. <br />2.6.2 Production Data <br />Above ground standing biomass of species (production) was determined as <br />6 <br />Exhibit 10, Item 5 Revision Date: 03/06/07 <br />11 Revision No.: PR-02 <br />