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dc.contributor.authorClark, P. E.
dc.contributor.authorSeyfried, M. S.
dc.date.accessioned2020-09-18T04:56:09Z
dc.date.available2020-09-18T04:56:09Z
dc.date.issued2001-09-01
dc.identifier.citationClark, P. E., & Seyfried, M. S. (2001). Point sampling for leaf area index in sagebrush steppe communities. Journal of Range Management, 54(5), 589-594.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003589
dc.identifier.doi10.2458/azu_jrm_v54i5_clark
dc.identifier.urihttp://hdl.handle.net/10150/643595
dc.description.abstractAlthough point sampling has been used for more than 30 years to quantify leaf area index (LAI), this field technique has not been rigorously evaluated in sagebrush steppe plant communities. Leaf area index estimates obtained using different sampling pin inclinations or combinations of pin inclinations were evaluated in Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle and Young), low sagebrush (Artemisia arbuscula Nutt.), and mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana [Rydb.] Beetle) communities within the Reynolds Creek Experimental Watershed near Boise, Ida. Leaf area index values determined by clipping and processing green foliage through a leaf area meter were used as evaluation standards. Pins inclined at 13 degrees from the horizontal, used alone or in combination with pins of 52 degrees and/or 90 degrees inclinations, performed poorly for estimating LAI in the Wyoming big sagebrush and low sagebrush communities. Estimating total LAI with either the combination of 52 degrees and 90 degrees angle pins or with 52 degrees or 90 degrees pins alone explained at least 96% of the variability in LAI standard values from the Wyoming big sagebrush and mountain big sagebrush communities. Using 52 degrees angle pins alone produced model fits similar to those obtained when the combination of 52 degrees and 90 degrees angle pins were used to estimate shrub, graminoid, and forb LAI across all 3 communities (P > 0.1). Collecting point data using 52 degrees angle pins often provided better or similar model fits with LAI standards compared to other pin angles but using 90 degrees angle pins offers a better compromise between practicality, efficiency, and accuracy.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectangle pins
dc.subjectArtemisia tridentata spp. wyomingensis
dc.subjectleaf angle
dc.subjectartemisia tridentata subsp. vaseyana
dc.subjectartemisia arbuscula
dc.subjectdata collection
dc.subjectground cover
dc.subjectaccuracy
dc.subjectsteppes
dc.subjectestimation
dc.subjectleaf area index
dc.subjectIdaho
dc.subjectArtemisia tridentata
dc.subjectcanopy
dc.subjectartemisia arbuscula
dc.subjectArtemisia tridentata spp. vaseyana
dc.subjectArtemisia tridentata spp. wyomingensis
dc.subjectLAI
dc.subjectlow sagebrush
dc.subjectmountain big sagebrush
dc.subjectWyoming big sagebrush
dc.titlePoint sampling for leaf area index in sagebrush steppe communities
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.collectioninformationThe Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume54
dc.source.issue5
dc.source.beginpage589-594
refterms.dateFOA2020-09-18T04:56:09Z


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