{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T20:09:00Z","timestamp":1760645340796,"version":"build-2065373602"},"reference-count":33,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Nevada Agricultural Experiment Station, McIntyre-Stennis"},{"name":"Nevada Agricultural Experiment Station","award":["52055642"],"award-info":[{"award-number":["52055642"]}]}],"content-domain":{"domain":["acsess.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Env Quality"],"published-print":{"date-parts":[[2007,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>High in situ concentrations of inorganic N and P have been reported in overland\/litter interflow from Sierran forests, indicating that these nutrients are derived from the forest floor O horizons. To test this hypothesis, forest floor monoliths consisting of the combined O<jats:sub>e<\/jats:sub> and O<jats:sub>i<\/jats:sub> horizons were collected near the South Shore of Lake Tahoe, Nevada, for leaching experiments. Three monoliths were left intact, and three were hand\u2010separated according to horizon for a total of three treatments (combined O<jats:sub>e<\/jats:sub>+O<jats:sub>i<\/jats:sub>, O<jats:sub>e<\/jats:sub> only, and O<jats:sub>i<\/jats:sub> only) by three replications. Samples were randomized and placed into lined leaching bins. Initial leaching consisted of misting to simulate typical early fall precipitation. This was followed by daily snow applications and a final misting to simulate spring precipitation. Leachate was collected, analyzed for NH<jats:sub>4<\/jats:sub><jats:sup>+<\/jats:sup>\u2013N, NO<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\u2013N, and PO<jats:sub>4<\/jats:sub><jats:sup>3\u2212<\/jats:sup>\u2013P, and a nutrient balance was computed. There was a net retention of NH<jats:sub>4<\/jats:sub><jats:sup>+<\/jats:sup>\u2013N, but a net release of both NO<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\u2013N and PO<jats:sub>4<\/jats:sub><jats:sup>3\u2212<\/jats:sup>\u2013P, and a net release of inorganic N and P overall. Total contributions (mg) of N and P were highest from the O<jats:sub>e<\/jats:sub> and O<jats:sub>e<\/jats:sub>+O<jats:sub>i<\/jats:sub> combined treatments, but when expressed as per unit mass, significantly (<jats:italic>p<\/jats:italic> &lt; 0.05) higher amounts of NO<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\u2013N and PO<jats:sub>4<\/jats:sub><jats:sup>3\u2212<\/jats:sup>\u2013P were derived from the O<jats:sub>i<\/jats:sub> materials. The nutrients in forest floor leachate are a potential source of biologically available N and P to adjacent surface waters. Transport of these nutrients from the terrestrial to the aquatic system in the Lake Tahoe basin may therefore play a part in the already deteriorating clarity of the lake.<\/jats:p>","DOI":"10.2134\/jeq2005.0465","type":"journal-article","created":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T23:15:04Z","timestamp":1172790904000},"page":"498-507","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Inorganic Nitrogen and Phosphorus in Sierran Forest O Horizon Leachate"],"prefix":"10.1002","volume":"36","author":[{"given":"T. M.","family":"Loupe","sequence":"first","affiliation":[{"name":"Hydrologic Sciences Program College of Agriculture, Biotechnology, and Natural Resources, Univ. of Nevada Reno NV 89512"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W. W.","family":"Miller","sequence":"additional","affiliation":[{"name":"Dep. of Natural Resources and Environmental Science College of Agriculture, Biotechnology, and Natural Resources, Univ. of Nevada Reno NV 89512"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. W.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Dep. of Natural Resources and Environmental Science College of Agriculture, Biotechnology, and Natural Resources, Univ. of Nevada Reno NV 89512"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. 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