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<br />i Cover and species composition were measured annually within each treatment. Herbaceous <br />cover was measwed by systematically placing 0.5 meter X 0.5 meter quadrats to the right of the <br />' S, 10, 15, 20, and 25 meter mazks along each transect center line. Within each quadrat, a cover <br />class was assigned to each life-form utilizing a modified Daubenmire cover scale (FSH 12/87 R- <br />I Supp. 1). Results are reported as the percent coverage by life-form. Species composition was <br />determined through an ocular survey. <br />Mycorrhiza] colonization and rooting depth were measwed at the termination of the study in <br />1 August 1998. A total of 16 plants were collected and analyzed for ecto- and VA mycorrhiza, <br />overall root length and general plant vigor. Root length was measwed from the top of the root <br />' collar to the tip of the root. The roots of ectomycorrhizal species (Gambel's oak) were visually <br />assessed for mycorrhizal structwes, while roots of VA mycorrhizal seedlings (serviceberry and <br />chokecherry} were stained and microscopically assessed for mycorrhizal structwes. <br />I , <br />i~ <br />Results <br />Woody Plant Survival. Overall, shrub survival is significantly higher (P<0.05) on the no- <br />topsoil treatment (76%) than on the topsoil treatment (47%) (Figure B-1). This minors a <br />consistent trend since the beginning of the study with mortality occurring on the topsoil treatment <br />at a dramatically higher rate. The topsoil treatment has lost 20% of its plants annually while the <br />no-topsoil treatment has lost approximately 9% of its plants annually. <br />100 <br />80 <br />> 60 <br />2 <br />40 <br />zo <br />Figure B-i. Shrub survival by treatment. <br />^ No Topsoil ~ Topsoil <br />12 <br />Overall Chokecherry <br />