Laserfiche WebLink
Page 2 • <br />lJ <br />April 23, 1991 <br />Snyder Tree Planting <br />Corrective Action Plan <br />Dan Hernandez <br />AREA OF PLANTING <br /># PLANTED <br />GOAL NUMBER <br />Williams Canyon <br />Road Area ~1 <br />Road Area //2 <br />Road Area #3 <br />Road Area #4 <br />Trees were not required on <br />116 75 - B5 <br />264 125 - 135 <br />63 25 - 35 <br />94 50 - 60 <br />150..' 70-80 <br />- ~g1 <br />the other road disturbance areas. <br />These goal numbers produce an average of about 110 - 120 trees ~~er <br />acre after considering a survival rate similar to what occurred on t}ie <br />Snyder Berm planting in the early to mid 1980'x. <br />WILLIAMS CANYON - Recovery of the tree and shrub components in this <br />area appears to be proceeding rapidly. While planting the trees, <br />relatively large numbers of invading seedlings were noted. Most of <br />these seedlings appear to be in the 2 to 5 year old range. Moat apps:ar <br />to be about 3 years old. Competition is moderate. Good soil moistu~•e <br />levels, high organic matter contents, and excellent shade factors (from <br />existing shrubs) during the growing season will aid in the natural <br />recovery of this area and the survival of the planted trees. Because: <br />most of the ground level vegetation was only marginally affected by the <br />slides and soils were left intact, a strong natural recovery potential <br />exists on this site. <br />It should be noted that in the final examination for determinat9.on <br />of success, the investigators may experience considerable difficulty <br />distinguishing planted trees from invaders. Markers can help, but <br />unless they are periodically replaced marker loss will be a problem 9n <br />this thick, shrub dominated vegetation. Also, because of the thick <br />shrub cover, locating small trees except in a sampling scheme will be <br />very difficult until those trees become considerably larger than the <br />shrubs. Because oP the rate of natural recovery that is occuring anc. <br />will continue to occur on this site, assessing the contribution of <br />planting trees to the reforestation will be difficult at best. <br />ROAD DISTURBANCES: In Williams Canyon natural recovery will be rapifi. <br />and will confuse assessments. In the road side disturbances, except for <br />/{2, the opportunity for high precision assessment of success rates is <br />considerable. Although these sites have essentially the same aspect, <br />slope gradients, substrate composition, soil depth, competition, and <br />invasion rates vary considerably between the sites. <br />