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dc.contributor.authorKie, J. G.
dc.date.accessioned2020-09-24T03:44:59Z
dc.date.available2020-09-24T03:44:59Z
dc.date.issued1986-11-01
dc.identifier.citationKie, J. G. (1986). Nutritive quality of ceanothus shrubs in California mixed conifer forest. Journal of Range Management, 39(6), 521-526.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/3898763
dc.identifier.urihttp://hdl.handle.net/10150/645371
dc.description.abstractMule deer (Odocoileus hemionus) in the Sierra Nevada rely heavily on mountain whitethorn (Ceanothus cordulatus, Kell.) and deerbursh (C. integerrimus, H&A) as summer forage. In this study, mountain whitethorn leaves, deerbrush leaves, and deerbush twigs were collected from shrubs growing in full sun every 2 weeks during summer, and from shrubs growing under a range of overstory crown closures during late summer-early fall. Samples were analyzed for calcium, phosphorus, crude protein, in vitro digestible dry matter (IVDDM), gross energy, digestible energy, and sequential fibers. Summer samples of all 3 forages had adequate concentrations of calcium, apparently adequate concentrations of crude protein, and inadequate concentrations of digestible energy and phosphorus for growth and development in deer. IVDDM values were lower than expected based on fiber content alone, suggesting high concentrations of digestion-inhibiting compounds. In general, forage quality declined as summer progressed. Crown closure and shrub age had only minor effects on forage quality, but significant annual differences were found in several variables in both species. Under conditions common to the southern Sierra Nevada, annual differences in precipitation may have been more important than available light in determining forage quality. Forage deficiencies in late summer may have a substantial adverse affect on newly weaned fawns. Marginal forage quality with respect to certain nutrients suggests the need to further explore deer nutritional ecology on summer and other seasonal ranges in the Sierra Nevada.
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.subjectdigestible energy
dc.subjectCeanothus cordulatus
dc.subjectCeanothus integerrimus
dc.subjectphotoperiod
dc.subjectmixed conifers
dc.subjectdigestibility
dc.subjectcrude protein
dc.subjectOdocoileus hemionus
dc.subjectCalifornia
dc.subjectseasonal variation
dc.subjectnutritive value
dc.subjectforage
dc.titleNutritive Quality of Ceanothus Shrubs in California Mixed Conifer Forest
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.volume39
dc.source.issue6
dc.source.beginpage521-526
refterms.dateFOA2020-09-24T03:44:59Z


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