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<br /> <br /> <br />lUriw NoNzan iUine: 2007 Vegetation Samttling for Phase 3 Bond Release <br />Table 4 shows the values for the t-test. Because tc is less than t,, the null hypothesis is not <br />rejected, reclaimed area cover is deemed to be equal to or greater than Q, and revegetation is <br />deemed successful in 2007 for cover. <br />Table 4. StaEistical values for the 1-sample reverse-null t-test, Phase 3 Dryland Pasture reclaimed area <br />cover vs. the referenc$ area standard. <br /> Dryland Pasture Ptwse <br />3 Reciairt-ed Area Dryland Pasture <br />Reference Area <br />Mean Cover 2ti.4 30,0 <br />Standard Deviations 8.9 S.8 <br />No. of Sa ies n 22 2t <br />Sam a Ade uac Demonstrated Yes Yes <br /> <br />Standard Error SE = sl~n 1.89 <br />Q 90°~ of reference area moan 27.0 <br />#~ {calculated t-value~G2~X,„~1 SE, 0.318 <br />tt table t value 1-tailed, al =0.#fl, df = n-1 1.373 <br />Production. The mean value in the Phase 3 reclaimed areas {301.3 Ib/acres substantiaiiy <br />exceeds the mean in the reference area {150.3 Iblacrej. Because sample adequacy was <br />demonstrated in bath areas, and the mean exceeds Q, then no statistical comparison is <br />necessary, and revegeta6on is deemed suctxtssful for production. <br />5.0 REFERENCES <br />Whitson, T.D., editor. 2000. Weeds of the West, 9`" ed~tian. The Westem Society of Weed <br />Science, Newark, Calif., and University ofi Wyoming, Laramie. 628 pages. <br />6.0 PREPARERS <br />Project Manager and Report Author was Steve Boyle, Owner and Senior Biologist at BIO- <br />Logic Environmental. Mr. Bayie conducted the site visits and authored this report. Mr. Boyle <br />holds a Master's degree in Wildlife Bialagy (Colorado State University, 19131 }and has 2ti years <br />of experience in biological assessments, natural resource planning, and surveys for threatened <br />and endangered species in the vrestem U.S. and overseas. He has carried out more than thirty <br />Bi4lcrgicai Assessments, Environmental Assessments, and Environmental Impact Statements. <br />Mr. Boyle has been the Principal Investigator for funded research on pronghorn, wild horses, <br />bats, and songbirds, and has field experience investigating the biology of spotted owls, kit fox, <br />mute deer, elk, bighorn sheep, wild turkey, and desert tortoises. He has conducted western <br />Colorado bird surveys, validated theoretical models linking vertebrate species distributions to <br />habitat characteristics for the Golorado Gap Analysis Project, and eo-authored the Caiorado <br />Breeding Bird Atlas. Mr. Boyle was formerly District Wildlife Manager for the. Golarado Division <br />of Wildlife in Dolores County, and has held research and freid positions vrith the. U.S. Fish and <br />Wildlife Service, Department of Flshery and Wildlife Biology at Colorado State University, U.S. <br />Bureau of Land Management, and the l2ayal Australasian Ornithologists Union in Westem <br />Australia. <br />8!O-Logic Envfronmonfal <br />November 12, 2007 <br />1f <br />Attachment 1-11 <br />