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dc.contributor.authorPerryman, B. L.
dc.contributor.authorMaier, A. M.
dc.contributor.authorHild, A. L.
dc.contributor.authorOlson, R. A.
dc.date.accessioned2020-09-23T05:20:31Z
dc.date.available2020-09-23T05:20:31Z
dc.date.issued2001-03-01
dc.identifier.citationPerryman, B. L., Maier, A. M., Hild, A. L., & Olson, R. A. (2001). Demographic characteristics of 3 Artemisia tridentata Nutt. subspecies. Journal of Range Management, 54(2), 166-170.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003178
dc.identifier.doi10.2458/azu_jrm_v54i2_perryman
dc.identifier.urihttp://hdl.handle.net/10150/643851
dc.description.abstractPrevious research suggested that woody plant recruitment may occur in pulses in semi-arid areas. The overall objective of this study was to determine if this pulse phenomena was recorded in the demographic structures of big sagebrush (Artemisia tridentata Nutt.) stands in Wyoming. In 1997, approximately 75 stem cross sections were collected from 9 stands of each of 3 subspecies of big sagebrush in Wyoming along elevation and climatic gradients. Annual growth-rings were used to identify year of establishment and demographic characteristics were analyzed from age-class frequencies. Mean stand ages of the 3 subspecies were different (P = 0.002), and analyses revealed that Wyoming (A. tridentata ssp. wyomingensis) and mountain big sagebrush (A. tridentata ssp. vaseyana) stand ages (32 +/- 9 and 26 +/- 9 years, respectively) were significantly older than basin big sagebrush (A. tridentata ssp. tridentata) (17 +/- 3) stands (P < 0.05). Mean recruitment intervals (years) were shorter for basin (1.6) than for Wyoming (2.3) and mountain (2.2) sagebrush (P = < 0.01). The number of cohorts did not differ among the subspecies (P = 0.11), but the percent of years with recruitment was significantly higher for basin (59%) compared to Wyoming (37%) and mountain (39%) subspecies (P 0.0001). Age-class frequency distributions of each stand and regional stand combination were assessed for dispersion across each associated period of record. Chi-square goodness-of-fit tests were performed for the negative binomial distribution. All stands (with one exception) and all 3 regional stand combinations fit the negative binomial distribution. Age-class frequency patterns indicate that recruitment is clustered or aggregated across each period of record. Recruitment in big sagebrush stands occurs in pulses throughout Wyoming.
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.subjectArtemisia tridentata spp. wyomingensis
dc.subjectartemisia tridentata subsp. vaseyana
dc.subjectartemisia tridentata subsp. tridentata
dc.subjectfrequency distribution
dc.subjectage structure
dc.subjectrecruitment
dc.subjectstand establishment
dc.subjectWyoming
dc.subjectArtemisia tridentata
dc.subjectsemiarid zones
dc.subjectdemography
dc.subjectbig sagebrush
dc.subjectrecruitment intervals
dc.titleDemographic characteristics of 3 Artemisia tridentata Nutt. subspecies
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.issue2
dc.source.beginpage166-170
refterms.dateFOA2020-09-23T05:20:32Z


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