Laserfiche WebLink
Methods for Shrub Establishment Monitoring <br />Shrub Density. Approximately 1.8-15% of each woody plant establishment unit was sampled <br />through the use of systematically placed permanent belt transects (Table A-1). In newly planted <br />areas, a baseline was subjectively placed pazallel to the unit contour and permanently marked by <br />steel posts at the endpoints. When possible, existing boundary markers were used as endpoints <br />for the baseline. Permanent belt transects (2 meters x 25 meters) were systematically placed <br />perpendiculaz to the baseline within each plot with endpoints mazked by wooden stakes. In <br />certain instances, more than one baseline was used in order to attain a sufficient sample size or to <br />insure adequate coverage of varied topography. All shrubs present within each transect were <br />identified and counted. Analysis consisted of calculating the average stem density from existing <br />and original numbers of individuals within each transect. <br /> <br />~~ <br /> <br /> <br />All planting units were sampled in a similar manner with the exceptions of 95-4 and 95-1. <br />Planting Unit 95-4 is part of the Topsoil Depth /Shrub Establishment Study and was sampled <br />randomly as opposed to systematically in order to meet statistical criteria. Planting Unit 95-1 is <br />part of the recently completed Herbivory Study and was sampled within randomized blocks <br />instead of belt transects. <br />Stem densities and standazd deviations were estimated on a per site basis. Survival by species <br />was calculated based upon plant numbers collected at the time of planting divided by the number <br />of individuals present at the time of monitoring. Standazd deviations were calculated for stem <br />density on a per site basis. <br />Browse Damage. Browse was estimated by examining each plant for signs of damage. The <br />number of plants browsed was divided by total number of plants in order to calculate the percent <br />browsed. <br />Percent Coverage by Life-form. Plant canopy cover was measured by systematically placing <br />0.5 meter X 0.5 meter quadrats to the right of the 5, I5, and 25 meter marks of each transect. <br />Within each quadrat, a cover class was assigned to each life-form utilizing a modified <br />Daubenmire cover scale (FSH 12/87 R-1 Supp 1). Results are reported as percent coverage by <br />life-form. <br />' Species Composition. Species composition was determined within each shrub planting area <br />through the use of an oculaz survey. The site was traversed and al] species encountered recorded. <br />Potential noxious weed problems were noted. <br />4 <br />