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Hydrologic properties of soil and subsoil on a steep, forested slope /Ranken, Darrel Wesley. January 1974 (has links)
Thesis (M.S.)--Oregon State University, 1974. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
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Forest soils of Ethiopian highlands : their characteristics in relation to site history : studies based on stable isotopes /Eshetu, Zewdu, January 1900 (has links) (PDF)
Diss. (sammanfattning) Umeå : Sveriges lantbruksuniv. / Härtill 3 uppsatser.
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Catchment hydrochemical processes controlling acidity and nitrogen in forest stream water /Fölster, Jens, January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2001. / Härtill 4 uppsatser.
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Nitrogen in soil water at five nitrogen-enriched forest sites in Sweden /Ring, Eva. January 1900 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2001. / Härtill 4 uppsatser.
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Aspects on nutrient availability in Swedish forest soils /Lundell, Ylva, January 1900 (has links) (PDF)
Diss. (sammanfattning) Umeå : Sveriges lantbruksuniv. / Härtill 4 uppsatser.
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Impacts of post-fire salvage logging on soil chemistry, physical properties and bacterial community composition in a mixed-conifer forest in central Oregon /Jennings, Tara Nicolle. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 39-50). Also available on the World Wide Web.
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Low molecular weight organic acids in forest soilsHayden, John 12 November 1999 (has links)
Two studies concerning low molecular weight organic acids in soils
were conducted. In the first study, anion exclusion chromatography was
used to separate and identify 12 common organic acids, and the accuracy,
precision and detection limits of the method were determined. The method
was found to be sensitive and accurate to between 1.5 and 9 ��M,
depending on the acid in question. The stability of the selected acids was
examined, and the large concentration changes observed underscore the
importance of timely analysis of soil solutions. No significant interferences
were encountered in the analysis of two soil solutions. In the second
study, the reaction of a forest soil with oxalic acid at four concentrations
was monitored for a period of 96 hours. A large release of aluminum,
sulfate, and phosphate was observed, with the greatest release occurring
with the highest concentration of added oxalate. Solution aluminum
increased by up to a factor of twenty, and though [Al�����] values were
consistent with control by thermodynamic equilibrium with an amorphous
aluminum oxide phase, exchangeable Al appeared to be the source of the
increase. Sulfate increased abruptly at the start of the reaction and
continued to rise, though more slowly, throughout the study. Solution
phosphate was increased by up to four times and was maintained at the
elevated level throughout the study. Changes in both sulfate and
phosphate concentrations were attributed directly to exchange with oxalate.
The persistence of elevated phosphate concentrations after 96 hours
indicates that the effects of oxalate production by mycorrhizae could have
lasting effects on the nutrient status of a soil. / Graduation date: 2000
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Restoring productivity of compacted forest soils with tillage /Whitaker, Carol Anne. January 1983 (has links)
Thesis (M.S.)--Oregon State University, 1983. / Typescript (photocopy). Includes bibliographical references (leaves 41-44). Also available on the World Wide Web.
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First-year effects of broadcast burning on soil infiltration and wettability in southwest Oregon /Gaweda, Frank M. January 1983 (has links)
Thesis (M.S.)--Oregon State University, 1984. / Typescript (photocopy). Includes bibliographical references (leaves 89-94). Also available on the World Wide Web.
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The effects of compaction on hydrologic properties of forest soils in the Sierra Nevada /Cafferata, Peter Herman Louis. January 1980 (has links)
Thesis (M.S.)--Oregon State University, 1981. / Typescript (photocopy). Includes bibliographical references (leaves 125-132). Also available on the World Wide Web.
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