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~U- exclosuree vere not necessary because domestic livestock had not been • graze~5ln the area. Production samples vere collected by clipping all the current year's growth of herbaceous vegetation vi thin a 1 meter x 4 meter rectangular quadrat (total area ~ 4/m2) at each sample point. The plant materials clipped from each plot were segregated according to mayor life Eorm, placed in bags, and labeled. All samples were transported to the laboratory and dried for 24 hours in a Hlum pl gravity drying oven at a constant temperature of 105°C. All samples vere then weighed to the nearest 0.1 gm on a triple beam balance and the data recorded according to species or major life form for each sample. The maximum number of productivity samples required pursuant to stipu- lation 9 (50) vere taken on the affected and reference areas. Sample ade- quacy vas calculated for the productivity data with the same formula used to calculate adequacy of cover data as defined in Section 2.3. 2.5 DENSITY OF Ii00DY PIANTS • Density of trees, shrubs, and sub-shrubs was determined for the pinyon-juniper affected area. Data on woody plant density was not necessary for the reference area (Greg Squire, ClII.RD, personal com- munication, July, 1983). Sub-shrub and shrub density vas estLnated along the same transects used for cover data. The species and number of shrubs whose stems arose vi thin 50 centimeters of either side of the 50 meter long transect were recorded on standard data forms. The point-quarter technique (Cottham and Curtis 1956; Smith 1974) vas ueed~[o collect tree density data on the picryon-juniper area. A sample point was located at the beginning of each of Che transects and/or at the production plots. At each sample point, imaginary grid lines vere used to divide the area into four quarters. The tree nearest the point in each quarter vas recorded by species and the distance from the point to the tree was recorded on standard data forma. Sample adequacy for all woody species vas calculated with the ssme • formula used to calculate adequacy for the cover data as defined in Section 2.3. Sampling continued until an adequate saple had been obtained; or until 50 samples vere taken.