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dc.contributor.authorPyke, D. A.
dc.contributor.authorZamora, B. A.
dc.date.accessioned2020-09-25T07:24:27Z
dc.date.available2020-09-25T07:24:27Z
dc.date.issued1982-11-01
dc.identifier.citationPyke, D. A., & Zamora, B. A. (1982). Relationships between overstory structure and understory production in the grand fir/myrtle boxwood habitat type of northcentral Idaho. Journal of Range Management, 35(6), 769-773.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/3898261
dc.identifier.urihttp://hdl.handle.net/10150/646077
dc.description.abstractRelationships between overstory structure and understory current year production on 20 undisturbed sites of the grand fir/myrtle boxwood habitat type were studied in the Clearwater Mountains of northcentral Idaho. Overstory characteristics measured were tree canopy coverage, sum of the tree diameters, basal area, stand height, and stem density. Understory production was divided into four vegetation classes: (1) shrubs, (2) forbs, (3) graminoid and (4) total production. Regression models predicting current year production of each understory vegetation class were developed using all possible combinations of overstory parameters as independent variables. Canopy coverage and sum of the tree diameters were found to be the best indices of understory production. Canopy coverage was most significantly correlated with total understory production and shrub production. Canopy coverage and sum of the tree diameters were the most significantly correlated overstory parameters with forb production. Graminoid production was not significantly correlated to any of the measured overstory parameters. Basal area, tree density, and stand height were not statistically related to the understory production. Further examination of the models is needed to validate these relationships over the range of the grand fir/myrtle boxwood habitat type. The models are not applicable to areas where recent disturbance such as logging, fire, or disease has affected overstory structure.
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.subjectStem
dc.subjectOverstory Structure
dc.subjectunderstory production
dc.subjectGrand Fir
dc.subjectMyrtle Boxwood Habitat
dc.subjectNorthcentral Idaho
dc.subjectStem Diameters
dc.subjectCanopy Coverage
dc.subjectgraminoids
dc.subjectClearwater Ranger District
dc.subjectNezperce National Forest
dc.subjectdensity
dc.subjectshrubs
dc.subjectheight
dc.subjectbasal area
dc.subjectrelationships
dc.subjectforbs
dc.titleRelationships between Overstory Structure and Understory Production in the Grand Fir/Myrtle Boxwood Habitat Type of Northcentral Idaho
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.noteThis material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.
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.volume35
dc.source.issue6
dc.source.beginpage769-773
refterms.dateFOA2020-09-25T07:24:27Z


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