Show simple item record

dc.contributor.authorRau, B. M.
dc.contributor.authorChambers, J. C.
dc.contributor.authorPyke, D. A.
dc.contributor.authorRoundy, B. A.
dc.contributor.authorSchupp, E. W.
dc.contributor.authorDoescher, P.
dc.contributor.authorCaldwell, T. G.
dc.date.accessioned2021-03-08T18:40:55Z
dc.date.available2021-03-08T18:40:55Z
dc.date.issued2014-09
dc.identifier.citationRau, B. M., Chambers, J. C., Pyke, D. A., Roundy, B. A., Schupp, E. W., Doescher, P., & Caldwell, T. G. (2014). Soil Resources Influence Vegetation and Response to Fire and Fire-Surrogate Treatments in Sagebrush-Steppe Ecosystems. Rangeland Ecology & Management, 67(5), 506–521.
dc.identifier.issn0022-409x
dc.identifier.doi10.2111/REM-D-14-00027.1
dc.identifier.urihttp://hdl.handle.net/10150/656984
dc.description.abstractCurrent paradigm suggests that spatial and temporal competition for resources limit an exotic invader, cheatgrass (Bromus tectorum L.), which once established, alters fire regimes and can result in annual grass dominance in sagebrush steppe. Prescribed fire and fire surrogate treatments (mowing, tebuthiuron, and imazapic) are used to reduce woody fuels and increase resistance to exotic annuals, but may alter resource availability and inadvertently favor invasive species. We used four study sites within the Sagebrush Steppe Treatment Evaluation Project (SageSTEP) to evaluate 1) how vegetation and soil resources were affected by treatment, and 2) how soil resources influenced native herbaceous perennial and exotic annual grass cover before and following treatment. Treatments increased resin exchangeable NH4+, NO3-, H2PO4-, and K+, with the largest increases caused by prescribed fire and prolonged by application of imazapic. Burning with imazapic application also increased the number of wet growing degree days. Tebuthiuron and imazapic reduced exotic annual grass cover, but imazapic also reduced herbaceous perennial cover when used with prescribed fire. Native perennial herbaceous species cover was higher where mean annual precipitation and soil water resources were relatively high. Exotic annual grass cover was higher where resin exchangeable H2PO4- was high and gaps between perennial plants were large. Prescribed fire, mowing, and tebuthiuron were successful at increasing perennial herbaceous cover, but the results were often ephemeral and inconsistent among sites. Locations with sandy soil, low mean annual precipitation, or low soil water holding capacity were more likely to experience increased exotic annual grass cover after treatment, and treatments that result in slow release of resources are needed on these sites. This is one of few studies that correlate abiotic variables to native and exotic species cover across a broad geographic setting, and that demonstrates how soil resources potentially influence the outcome of management treatments. © 2014 The Society for Range 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.subjectExotic annual grass
dc.subjectHerbicide
dc.subjectMowing
dc.subjectPrescribed fire
dc.subjectSoil nutrients
dc.subjectSoil water
dc.titleSoil Resources Influence Vegetation and Response to Fire and Fire-Surrogate Treatments in Sagebrush-Steppe Ecosystems
dc.typeArticle
dc.typetext
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.source.journaltitleRangeland Ecology & Management
dc.source.volume67
dc.source.issue5
dc.source.beginpage506
dc.source.endpage521
refterms.dateFOA2021-03-08T18:40:55Z


Files in this item

Thumbnail
Name:
Soil-Resources-Influence-Veget ...
Size:
726.5Kb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record