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dc.contributor.authorCampbell, E. S.
dc.contributor.authorTaylor, C. A.
dc.date.accessioned2020-09-05T07:39:37Z
dc.date.available2020-09-05T07:39:37Z
dc.date.issued2007-01-01
dc.identifier.citationCampbell, E. S., & Taylor Jr, C. A. (2007). Monoterpene production in redberry juniper foliage following fire. Rangeland Ecology & Management, 60(1), 104-109.
dc.identifier.issn0022-409X
dc.identifier.doi10.2111/04-160R2.1
dc.identifier.urihttp://hdl.handle.net/10150/643135
dc.description.abstractPrescribed fire is commonly used to initiate redberry juniper (Juniperus pinchotti Sudw.) suppression, and herbivory by goats presents a potentially effective mechanism to prolong the efficacy of the reclamation treatment. Monoterpenes in redberry juniper leaves serve as a barrier to effective herbivory, but fire has the potential to reduce this barrier through reversion of aboveground growth to juvenile tissue. Traditional optimal defense theory predicts that because of the assumed fitness value of vegetative regrowth, plant secondary chemicals will be higher in this tissue than mature growth. This study was designed to measure the monoterpene concentration and composition from redberry juniper foliage sampled from 3 different ages of plant tissue. Prescribed fire was used to create 3- and 11-month regrowth juniper foliage, and mature growth of juniper was sampled as a control. Total monoterpene levels were lowest in the 3-month regrowth (P = 0.018). Monoterpene concentration and composition was similar for the 11-month and mature foliage. Concentration of terpinen-4-ol (P = 0.001) and alpha-terpineol (P = 0.007), identified as particularly aversive monoterpenoids to goats, was lowest in the 3-month regrowth but increased to levels found in mature leaves by 11 months of age. There was a trend in changes in composition of total oil as relative concentrations of monoterpene hydrocarbons (a-pinene, b-pinene/sabinene) decreased and monoterpene alcohols and oxygenated monoterpenes increased. These results identify a short period of time following a burn during which monoterpene levels in regrowth are low. This suggests a period of vulnerability in plant biochemical defenses that has the potential to be utilized by strategic herbivory by goats for more effective juniper management. 
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.subjectJuniperus pinchotii
dc.subjectterpenes
dc.subjectglands
dc.subjectprescribed burning
dc.subjectgoats
dc.titleMonoterpene Production in Redberry Juniper Foliage Following Fire
dc.typetext
dc.typeArticle
dc.identifier.journalRangeland Ecology & Management
dc.description.collectioninformationThe Rangeland Ecology & 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.volume60
dc.source.issue1
dc.source.beginpage104-109
refterms.dateFOA2020-09-05T07:39:37Z


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