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dc.contributor.authorCox, J. R.
dc.contributor.authorAlba-Avila, A.
dc.contributor.authorRice, R. W.
dc.contributor.authorCox, J. N.
dc.date.accessioned2020-09-23T19:03:09Z
dc.date.available2020-09-23T19:03:09Z
dc.date.issued1993-01-01
dc.identifier.citationCox, J. R., De Alba-Avila, A., Rice, R. W., & Cox, J. N. (1993). Biological and physical factors influencing Acacia constricta and Prosopis velutina establishment in the Sonoran Desert. Journal of Range Management, 46(1), 43-48.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002446
dc.identifier.urihttp://hdl.handle.net/10150/644515
dc.description.abstractOver the past century woody plants have increased in abundance on sites formerly occupied by grasslands in the Sonoran Desert. Woody plant invasion has been associated with a multitude of biological and physical factors. This study was conducted to determine temperature, soil, fire, rodent, and livestock effects on the germination and establishment of whitethorn acacia (Acacia constricta Benth.) and velvet mesquite (Prosopis velutina (Woot.) Sarg.). Optimum termination temperatures for both shrubs ranged from 26 to 31 degrees C, and seedling emergence was greatest from seed sown at 1 to 2 cm depths in sandy loam soil. Merriams kangaroo rats (Dipodomys merriami) fed seeds in the laboratory removed seed coats and planted embryos at 2 to 4 cm depths in a sandy loam soil. Prescribed fire killed 100% of seed placed on the soil surface but had no measurable effect on the germination of seed planted at 2 cm. After passage by sheep, about 6% of the A. constricta and 13% of the P. velutina seeds germinated while after passage by cattle, only 1% of the A. constricta and 3% of the P. velutina seed terminated. Embryo planting by rodents may improve survival efficiencies for these legunminous shrub seedlings, but seed consumption and passage by sheep and cattle appear to adversely affect seed germination. Dipodomys merriami, rather than domestic livestock, may be responsible for the spread of these shrubs in the Sonoran Desert.
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.subjectdesert rodents
dc.subjectshrub invasion
dc.subjectedaphic factors
dc.subjectAcacia
dc.subjectwoody weeds
dc.subjectsowing depth
dc.subjectdeserts
dc.subjectweed biology
dc.subjectProsopis velutina
dc.subjectseed dispersal
dc.subjectgrasslands
dc.subjectseedling emergence
dc.subjectinvasion
dc.subjectfires
dc.subjectfire effects
dc.subjectair temperature
dc.subjectwoody plants
dc.subjectenvironmental factors
dc.subjectsheep
dc.subjectcattle
dc.subjectseed germination
dc.subjectestablishment
dc.subjectArizona
dc.subjectsoil texture
dc.titleBiological and physical factors influencing Acacia constricta and Prosopis velutina establishment in the Sonoran Desert
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.volume46
dc.source.issue1
dc.source.beginpage43-48
refterms.dateFOA2020-09-23T19:03:09Z


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