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<br />-2- <br />A. herbaceous production (factoring <br />out woody plant production in order <br />to determine if this was causing <br />the bivariate distribution) <br />B. aspect (each sample was assigned <br />an aspect; N,S,E.W, and analyzed <br />to determine if there were signifi- <br />cant differences for cover and <br />production between aspects) <br />C. drainage bottoms (were analysed to <br />determine whether there was a <br />significant difference between <br />cover and production in these areas <br />and the teat of the samples) <br />I was unable to explain the high variation and spread using any <br />of the above stratifications. It is my feeling that the <br />Division must request that the permittee resample cover and <br />production for each vegetative community, using methods <br />acceptable to the Division. <br />The permittee hs provided information on woody plant densities <br />in the November~l0 submittal. The Division has two conce[ns <br />with respect to this information. The information is expressed <br />in units of length (m) not density (e.q. */m2). From the <br />discussion I deduced that the sampler was utilizing a <br />point-centered quarter method of sampling for density. This <br />method is acceptable to the Division, however it appeals that <br />the statistics (S, Nmin) have been calculated based on length <br />(m) rather than density. I feel this to be improper in that we <br />are not interested in comparing the central tendency of <br />length's, but densities. In order to calculate the desired <br />statistics, the density of each point should be determined, <br />yielding one sample unit. The mean, standard deviation, and <br />minimum sample size should then be calculated from these values. <br />The need for reference areas was discussed at the November 1 <br />meeting, and it was mutually agreed that reference area's would <br />not be required to be sampled or maintained given the total <br />acreage of surface disturbance (see November 4. 1982 <br />correspondence from D.H. Emling Co.). Revegetailon standards <br />will be derived from the assembled baseline data. <br />3.The Division requested an expanded qualitativediscussion of <br />each vegetation community. It was agreed in the November 1 <br />meeting that the permittee would expand the qualitative <br />discussion of each vegetative community. <br />