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Citeable URL: http://ir.library.oregonstate.edu/concern/articles/3197xp171

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is copyrighted by Academic Press and published by Elsevier. It can be found at:  http://www.journals.elsevier.com/journal-of-arid-environments/

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Creator	Morris, Lesley R. Weltz, Mark A. Badik, Kevin J. Morris, Christo
Abstract or Summary	Determining the causes of vegetation change in arid and semi-arid environments can be difficult and may involve multiple factors, including disturbance, inter-annual climatic variation, soils, effects from years past and interactions between these factors. Theoretical models describing vegetation change in these systems have generally focused on a single aspect as the primary driver. The integration of these factors into a single model may be what is required to fully understand the drivers of vegetation change in desert systems. To test the contributions of these various factors, we analyzed a long-term (1979–2011) vegetation dataset using multiple linear regression. While precipitation and livestock density were important variables for explaining vegetation change, the consistency with which past effects and interactions significantly improved the models underscores their importance. Past effects were included in every model except for shrub diversity, and included both precipitation and livestock density effects. A novel approach to addressing the interaction between grazing and precipitation was included by dividing precipitation by stocking density. Grass density had a high positive correlation with this metric, while shrub cover had a small negative correlation. These results support the integration of multiple factors to explain vegetation change.
Resource Type	Article
DOI	10.1016/j.jaridenv.2015.08.005
Date Available	2015-12-10T21:07:30+00:00
Date Issued	2016-01
Citation	Morris, C., Badik, K. J., Morris, L. R., & Weltz, M. A. (2016). Integrating precipitation, grazing, past effects and interactions in long-term vegetation change. Journal of Arid Environments, 124, 111-117. doi:10.1016/j.jaridenv.2015.08.005
Series	Journal of Arid Environments Vol. 124
Keyword	Succession Artemisia tridentata ssp vaseyana Bodie Hills Disturbance Transition
Rights Statement	Copyright Not Evaluated
Publisher	Elsevier
Peer Reviewed	Yes
Language	English [eng]
Replaces	http://hdl.handle.net/1957/57887
Additional Information	description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2015-12-10T21:07:02Z No. of bitstreams: 1 MorrisChristoAgricSciNaturalResourcesIntegratingPrecipitationGrazing.pdf: 762220 bytes, checksum: 1ee35282344c951baca845a4d8219df7 (MD5) description.provenance : Made available in DSpace on 2015-12-10T21:07:30Z (GMT). No. of bitstreams: 1 MorrisChristoAgricSciNaturalResourcesIntegratingPrecipitationGrazing.pdf: 762220 bytes, checksum: 1ee35282344c951baca845a4d8219df7 (MD5) Previous issue date: 2016-01 description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2015-12-10T21:07:30Z (GMT) No. of bitstreams: 1 MorrisChristoAgricSciNaturalResourcesIntegratingPrecipitationGrazing.pdf: 762220 bytes, checksum: 1ee35282344c951baca845a4d8219df7 (MD5)

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