Show simple item record

dc.contributor.authorRomme, William H.
dc.contributor.authorAllen, Craig D.
dc.contributor.authorBailey, John D.
dc.contributor.authorBaker, William L.
dc.contributor.authorBestelmeyer, Brandon T.
dc.contributor.authorBrown, Peter M.
dc.contributor.authorEisenhart, Karen S.
dc.contributor.authorFloyd, M. Lisa
dc.contributor.authorHuffman, David W.
dc.contributor.authorJacobs, Brian F.
dc.contributor.authorMiller, Richard F.
dc.contributor.authorMuldavin, Esteban H.
dc.contributor.authorSwetnam, Thomas W.
dc.contributor.authorTausch, Robin J.
dc.contributor.authorWeisberg, Peter J.
dc.date.accessioned2020-09-05T07:17:49Z
dc.date.available2020-09-05T07:17:49Z
dc.date.issued2009-05-01
dc.identifier.citationRomme, W. H., Allen, C. D., Bailey, J. D., Baker, W. L., Bestelmeyer, B. T., Brown, P. M., ... & Miller, R. F. (2009). Historical and modern disturbance regimes, stand structures, and landscape dynamics in piñon–juniper vegetation of the western United States. Rangeland Ecology & Management, 62(3), 203-222.
dc.identifier.issn0022-409X
dc.identifier.doi10.2111/08-188R1.1
dc.identifier.urihttp://hdl.handle.net/10150/643022
dc.description.abstractPiñon-juniper is a major vegetation type in western North America. Effective management of these ecosystems has been hindered by inadequate understanding of 1) the variability in ecosystem structure and ecological processes that exists among the diverse combinations of pin ̃ons, junipers, and associated shrubs, herbs, and soil organisms; 2) the prehistoric and historic disturbance regimes; and 3) the mechanisms driving changes in vegetation structure and composition during the past 150 yr. This article summarizes what we know (and don’t know) about three fundamentally different kinds of piñon-juniper vegetation. Persistent woodlands are found where local soils, climate, and disturbance regimes are favorable for piñon, juniper, or a mix of both; fires have always been infrequent in these woodlands. Piñon-juniper savannas are found where local soils and climate are suitable for both trees and grasses; it is logical that low-severity fires may have maintained low tree densities before disruption of fire regimes following Euro-American settlement, but information is insufficient to support any confident statements about historical disturbance regimes in these savannas. Wooded shrublands are found where local soils and climate support a shrub community, but trees can increase during moist climatic conditions and periods without disturbance and decrease during droughts and following disturbance. Dramatic increases in tree density have occurred in portions of all three types of Piñon-juniper vegetation, although equally dramatic mortality events have also occurred in some areas. The potential mechanisms driving increases in tree density—such as recovery from past disturbance, natural range expansion, livestock grazing, fire exclusion, climatic variability, and CO2 fertilization—generally have not received enough empirical or experimental investigation to predict which is most important in any given location. The intent of this synthesis is 1) to provide a source of information for managers and policy makers; and 2) to stimulate researchers to address the most important unanswered questions. 
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.subjectclimate
dc.subjectCO2
dc.subjectdrought
dc.subjectfire
dc.subjectgrazing
dc.subjecttree infill
dc.subjecttree invasion
dc.subjectrange expansion
dc.titleHistorical and Modern Disturbance Regimes, Stand Structures, and Landscape Dynamics in Piñon-Juniper Vegetation of the Western United States
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.volume62
dc.source.issue3
dc.source.beginpage203-222
refterms.dateFOA2020-09-05T07:17:49Z


Files in this item

Thumbnail
Name:
19951-34591-1-PB.pdf
Size:
2.488Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record