Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/2836
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dc.contributor.authorLewis, Tomen
dc.contributor.authorClarke, Peter Johnen
dc.contributor.authorReid, Nicholasen
dc.contributor.authorWhalley, Ralph Den
dc.date.accessioned2009-11-02T16:27:00Z-
dc.date.issued2008-
dc.identifier.citationAustral Ecology, 33(2), p. 128-139en
dc.identifier.issn1442-9993en
dc.identifier.issn1442-9985en
dc.identifier.urihttps://hdl.handle.net/1959.11/2836-
dc.description.abstractThe response of grasslands to disturbance varies with the nature of the disturbance and the productivity of the landscape. In highly productive grasslands, competitive exclusion often results in decreased species richness and grazing may allow more species to coexist. Once widespread, grasslands dominated by 'Dichanthium sericeum' (Queensland bluegrass) and 'Astrebla spp'. (Mitchell grass) occur on fertile plains but have been reduced in extent by cultivation. We tested the effects of exclusion of livestock grazing on these grasslands by comparing the floristic composition of sites in a nature reserve with an adjacent stock reserve. In addition, sites that had been cultivated within the nature reserve were compared with those where grazing but no cultivation had occurred. To partition the effects of temporal variation from spatial variation we sampled sites in three different years (1998, 2002 and 2004). Some 194 taxa were recorded at the nature reserve and surrounding stock routes. Sampling time, the occurrence of past cultivation and livestock grazing all influenced species composition. Species richness varied greatly between sampling periods relating to highly variable rainfall and water availability on heavy clay soils. Native species richness was significantly lower at previously cultivated sites (13–22 years after cultivation), but was not significantly influenced by grazing exclusion. After 8 years it appears that reintroducing disturbance in the form of livestock grazing is not necessary to maintain plant species richness in the reserve. The highly variable climate (e.g. droughts) probably plays an important role in the coexistence of species by negating competitive exclusion and allowing interstitial species to persist.en
dc.languageenen
dc.publisherBlackwell Publishing Ltden
dc.relation.ispartofAustral Ecologyen
dc.titlePerennial grassland dynamics on fertile plains: Is coexistence mediated by disturbance?en
dc.typeJournal Articleen
dc.identifier.doi10.1111/j.1442-9993.2007.01801.xen
dc.subject.keywordsTerrestrial Ecologyen
local.contributor.firstnameTomen
local.contributor.firstnamePeter Johnen
local.contributor.firstnameNicholasen
local.contributor.firstnameRalph Den
local.subject.for2008060208 Terrestrial Ecologyen
local.subject.seo2008960804 Farmland, Arable Cropland and Permanent Cropland Flora, Fauna and Biodiversityen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailpclarke1@une.edu.auen
local.profile.emailnrei3@une.edu.auen
local.profile.emailrwhalley@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:6684en
local.publisher.placeAustraliaen
local.format.startpage128en
local.format.endpage139en
local.identifier.scopusid40149092933en
local.peerreviewedYesen
local.identifier.volume33en
local.identifier.issue2en
local.title.subtitleIs coexistence mediated by disturbance?en
local.contributor.lastnameLewisen
local.contributor.lastnameClarkeen
local.contributor.lastnameReiden
local.contributor.lastnameWhalleyen
dc.identifier.staffune-id:pclarke1en
dc.identifier.staffune-id:nrei3en
dc.identifier.staffune-id:rwhalleyen
local.profile.orcid0000-0002-4377-9734en
local.profile.orcid0000-0002-2949-9891en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:2914en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitlePerennial grassland dynamics on fertile plainsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorLewis, Tomen
local.search.authorClarke, Peter Johnen
local.search.authorReid, Nicholasen
local.search.authorWhalley, Ralph Den
local.uneassociationUnknownen
local.identifier.wosid000253603900002en
local.year.published2008en
Appears in Collections:Journal Article
School of Environmental and Rural Science
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