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Ward Valley An Examination of Seven Issues in Earth Sciences and Ecology (1995) / Chapter Skim
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9 REVEGETATION
Pages 209-212

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From page 209...
... TlIE COMMITTEE'S APPROACH Revegetation Plan The committee reviewed the site revegetation plan, and other pertinent literature, and ted independent revegetation experts and experimenters to DarticiDate in the open meeting to share their knowledge and experience. ~ A r c7 At the time of the review of the Ward Valley documents, US Ecology had not developed a comprehensive revegetation program.
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From page 210...
... Although natural revegetation occurs on disturbed sites within the Mod ave Desert, it may initially create a sparse vegetation cover that will be insufficient for its role as a soil stabilizer and transpiration agent (Vasek, 1979/80~. Consequences of Elevated Trench Cover Elevation of the trench cover above the surrounding terrain mill prevent runon and thus the upper end of the cover (caps)
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From page 211...
... However, climatic variables foDow~ng active revegetation of the caps wall control future densities, plant vigor and invasion by native species CONCLUSIONS AND RECOMMENDATIONS In the opinion of the committee, the guidelines presented as part of the revegetation plan have been put together with an understanding of desert plant ecology, and do not reveal any "misconceptions about revegetation enhancements", as charged by the Wilshire group (Wilshire et al., 1993~. The emphasis on use of native species, establishment of appropriate desert soil conditions and mycorrh~zae that will enhance moisture and nutrient uptake by transplanted and invasive plants, and protection of seedlings from insects and other animals is extremely important to the success of a revegetation program that will depend on both active transplanting and reinvasion by native plant propaguies.
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From page 212...
... 1975b. Effects of pipeline construction on creosote bush scrub vegetation of the Mojave Desert.
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Key Terms

  • mojave desert
  • vegetation cover
  • hoc committee
  • native species
  • desert ecosystems

  • trench caps
  • scrub vegetation
  • cover gradient
  • moisture gradient
  • trench cap

  • disturbed mojave
  • ward valley
  • cover resulting
  • soil mycorrhizae
  • disturbed sites

  • overland runoff
  • help develop
  • pipeline construction
  • similar efforts
  • prepared trench

  • guidelines established
  • validation site
  • desert landscape
  • desert validation
  • power transmission

  • biological experts
  • mean annual
  • soil stabilizer
  • valley documents
  • plant water


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