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FRO Resources <br />species composition. Taxonomic nomenclature is according to Harrington <br />• (1964), Welsh (1973) and Crorquist et al. (1977). <br />Herbaceous vegetation was sampled usirg a modified point -centered quarter <br />method (Cottam and Curtis 1956, Dix 1961). This sampling method, as <br />modified, combines the use of point -centered quarter with a line <br />intercept. Basal cover, density and frequency values were obtained from <br />the measurements made. Points were established along randomly selected <br />transects (Figure 1). Five points were established along each line. <br />These five were combined in reducing data and calculating sample <br />adequacy. Each point consisted of 4 quarters, the position of which was <br />determined randomly along the orientation of the transect line, as <br />illustrated by Figure 1. In one of the 4 quarters of each point, one lm <br />intercept line was randomly located. Basal cover of all species <br />intercepted by this line was recorded to the nearest centimeter. The <br />intercept of litter, soil, rock, bryophytes and woody growth was similarly <br />• recorded. <br />Shrubs were sampled using a modified line intercept/belt transect (Lindsey <br />1955). Belts 4m X 10m were randomly located along lines radiating from a <br />central pin randomly located within an area marked on aerial photographs <br />(Figure 1). The position of the belts oriented along the radiating lines <br />was determined randomly within the framework of 8 ordinal and subordinal <br />compass points eminating from the central pin. The position of individual <br />belts along any of the 8 lines was determined randomly, as well. Random <br />numbers between 1 and 8 were selected until a base 20 transects had been <br />placed on any of the 8 lines (additional lines were established at right <br />angles to the original lines in order to obtain appropriate adequacy <br />levels). The distance between belts (in cases where more than one belt <br />occurred along a line) was determined randomly. A ten meter chain was <br />used to measure the length of each belt transect. Each line located was <br />• at least 50m in length. <br />II.F- 6 <br />