{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T04:18:01Z","timestamp":1769573881463,"version":"3.49.0"},"reference-count":38,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2001,3,1]],"date-time":"2001-03-01T00:00:00Z","timestamp":983404800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Long-Term Ecosystem Productivity Program"},{"name":"Siskiyou National Forest"}],"content-domain":{"domain":["acsess.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Soil Science Soc of Amer J"],"published-print":{"date-parts":[[2001,3]]},"abstract":"<jats:p>\n                    Forest management practices may alter soil properties, but experimental evaluation of treatment effects is often difficult because large soil variability yields poor statistical sensitivity. This study was conducted to determine if pretreatment soil sampling enhances our ability to detect treatment differences in Pacific Northwest forests. We used statistical simulation and data from 271 pretreatment 30\u2010cm\u2010deep soil cores taken from 70\u2010 to 100\u2010yr\u2010old post\u2010fire Douglas\u2010fir [\n                    <jats:italic>Pseudotsuga menziesii<\/jats:italic>\n                    (Mirb.) Franco] stands at the Siskiyou National Forest in southwestern Oregon. At this site, an unmanipulated control and six treatments of overstory species and woody debris are being established on 6\u2010ha plots and replicated in three blocks. If only post\u2010treatment measurements were made, the minimum detectable difference (MDD) between extreme treatments would be 26 to 57% of current soil C and N concentrations (g kg\n                    <jats:sup>\u22121<\/jats:sup>\n                    ) and masses (kg m\n                    <jats:sup>\u22122<\/jats:sup>\n                    ), with C generally having smaller relative MDDs than N. In contrast, if the differences between post\u2010 and pretreatment were evaluated, relative MDDs for C properties would remain the same, but those for N would decrease by as much as one\u2010half because N has greater pretreatment variability among plots than C. Masses of C and N, which incorporate information about rock volume and either soil mass or bulk density, have relative MDDs as small as one\u2010half of those associated with concentrations. Evaluation of other sites is required to determine if these observations are consistent for forests in general and, thus, applicable to the design of sampling strategies in large\u2010scale experiments.\n                  <\/jats:p>","DOI":"10.2136\/sssaj2001.652463x","type":"journal-article","created":{"date-parts":[[2010,7,27]],"date-time":"2010-07-27T16:57:15Z","timestamp":1280249835000},"page":"463-469","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":60,"title":["Detecting Treatment Differences in Soil Carbon and Nitrogen Resulting from Forest Manipulations"],"prefix":"10.1002","volume":"65","author":[{"given":"P.S.","family":"Homann","sequence":"first","affiliation":[{"name":"Huxley College of Environmental Studies, Western Washington Univ. Bellingham WA 98225\u20109181"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.T.","family":"Bormann","sequence":"additional","affiliation":[{"name":"USDA Forestry Sciences Laboratory Corvallis OR 97331"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.R.","family":"Boyle","sequence":"additional","affiliation":[{"name":"Dep. of Forest Resources Oregon State Univ. 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