Show simple item record

dc.contributor.authorStarns, Heath D. ( )
dc.contributor.authorWeckerly, Floyd W. ( Orcid Icon 0000-0002-6669-9817 )
dc.contributor.authorRicca, Mark ( Orcid Icon 0000-0003-1576-513X )
dc.contributor.authorDuarte, Adam ( )
dc.date.accessioned2020-03-19T20:25:44Z
dc.date.available2020-03-19T20:25:44Z
dc.date.issued2014-11
dc.identifier.citationStarns, H. D., Weckerly, F. W., Ricca, M. A., & Duarte, A. (2014). Vegetation changes associated with a population irruption by Roosevelt elk. Ecology and Evolution, 5(1), pp. 109–120.en_US
dc.identifier.issn2045-7758
dc.identifier.urihttps://digital.library.txstate.edu/handle/10877/9474
dc.description.abstractInteractions between large herbivores and their food supply are central to the study of population dynamics. We assessed temporal and spatial patterns in meadow plant biomass over a 23-year period for meadow complexes that were spatially linked to three distinct populations of Roosevelt elk (Cervus elaphus roosevelti) in northwestern California. Our objectives were to determine whether the plant community exhibited a tolerant or resistant response when elk population growth became irruptive. Plant biomass for the three meadow complexes inhabited by the elk populations was measured using Normalized Difference Vegetation Index (NDVI), which was derived from Landsat 5 Thematic Mapper imagery. Elk populations exhibited different patterns of growth through the time series, whereby one population underwent a complete four-stage irruptive growth pattern while the other two did not. Temporal changes in NDVI for the meadow complex used by the irruptive population suggested a decline in forage biomass during the end of the dry season and a temporal decline in spatial variation of NDVI at the peak of plant biomass in May. Conversely, no such patterns were detected in the meadow complexes inhabited by the nonirruptive populations. Our findings suggest that the meadow complex used by the irruptive elk population may have undergone changes in plant community composition favoring plants that were resistant to elk grazing.en_US
dc.formatText
dc.format.extent12 pages
dc.format.medium1 file (.pdf)
dc.language.isoen
dc.publisherJohn Wiley & Sons Ltd.en_US
dc.sourceEcology and Evolution, 2014, Vol. 5, No. 1, pp. 109–120.
dc.subjectNDVI
dc.subjectPlant traits
dc.subjectPopulation regulation
dc.subjectRemote sensing
dc.subjectUngulate
dc.subjectHerbivoryen_US
dc.titleVegetation Changes Associated with a Population Irruption by Roosevelt Elken_US
dc.typepublishedVersion
txstate.documenttypeArticle
dc.rights.holder© 2014 The Authors.
dc.identifier.doihttps://doi.org/10.1002/ece3.1327
dc.rights.licenseCreative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
dc.description.departmentBiology


Download

Thumbnail

This item appears in the following Collection(s)

Show simple item record