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Larry Routten <br />June 29, 1992 <br />Page 2 <br />The additional work proposed for 1992 will <br />generally follow the guidelines and agreements <br />contained in the May 9 CMLRD letter. Any <br />differences will be as discussed in the June 18 <br />meeting and summarized below. Sampling methods <br />will be consistent with those used in the 1990 <br />baseline study and are briefly described here. <br />The specified number of samples will be randomly <br />distributed in each type, both in the additional <br />study areas and previous baseline study area, where <br />appropriate. Cover only will be sampled in the <br />1990 baseline study comparison types. Distribution <br />of samples in the original study area types will <br />allow for demonstration of the comparability of <br />similar types occurring both in the 1990 study area <br />and the 1992 additional areas. Cover will be <br />sampled by the point intercept method using an <br />optical point bar. A 50-meter line will be <br />randomly oriented from the random point location. <br />At every 2 meters on the line, 2 points will be <br />read for a total of 50 points. Cover will be read <br />by species and will include first hit (non- <br />stratified vegetation cover), rock, litter, and <br />bare ground cover. The optical point bar allows <br />for evaluating species cover (and composition) in <br />stratified canopies. Shrub density estimates will <br />be made at the random cover transect location by <br />tallying the number of shrubs rooted within a 1- <br />meter wide strip along the 50-meter line (50 m=). <br />Where additional density transects are required to <br />meet sampling intensity, 1 meter x 50 meter plots <br />will be randomly oriented from new sample point <br />locations. Tree density sampling (aspen type only) <br />will be conducted similarly to shrub density <br />sampling, except that the plot will be 5 meters x <br />50 meters (250 m~). In addition, a random <br />selection of trees within the 250 m= plots will be <br />selected for diameter at breast height (dbh) and <br />age measurements. Production, where sampled, will <br />be estimated in .5 m= circular plots placed at the <br />random sample point location. All herbaceous <br />material in a vertical projection of the plot will <br />be clipped, bagged, dried, and weighed. Cropland <br />production will be determined from operator and <br />