Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/8590
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dc.contributor.authorBarnes, Phoebeen
dc.contributor.authorWilson, Brianen
dc.contributor.authorTrotter, Marken
dc.contributor.authorLamb, Daviden
dc.contributor.authorReid, Nicken
dc.contributor.authorKoen, Terryen
dc.contributor.authorBayerlein, Leopolden
dc.date.accessioned2011-09-28T12:03:00Z-
dc.date.issued2011-
dc.identifier.citationThe Rangeland Journal, 33(2), p. 121-130en
dc.identifier.issn1834-7541en
dc.identifier.issn1036-9872en
dc.identifier.urihttps://hdl.handle.net/1959.11/8590-
dc.description.abstractScattered paddock trees occur across agricultural landscapes in Australia. However, in the temperate regions of Australia their numbers are rapidly declining and they may be lost across much of the landscape in 200 years. Here we examined the spatial distribution of green (GDB), senescent (SDB) and total (TDB) dry pasture biomass, and nutrient status of the GDB fraction around scattered 'Eucalyptus' trees on three parent materials (basalt, granite and meta-sediment) in native and sown pastures across a range of grazed temperate landscapes in northern New South Wales. We used a combination of destructive harvests and a handheld active optical canopy reflectance sensor (AOS) with an integrated GPS to examine pasture biomass around scattered trees. The harvested pasture biomass data indicated that under grazed conditions the presence of scattered trees did not introduce significant radial trends in TDB or GDB out to a distance of 3.5 canopy radii regardless of tree species or parent material. The red and near-infrared reflectance-based Normalised Difference Vegetation Index (NDVI), as measured by the AOS, did indicate a consistent azimuthal trend with larger GDB on the southern side of the tree and lower GDB on the northern side in the native pasture. However, this observation must be qualified as the regression coefficient for the relationship between NDVI and GDB was significant but weak (best r² = 0.42), and SDB reduced its predictive capacity. We also found a higher percentage of GDB under the canopy than in the open paddock. We suggest that the combination of these results may indicate higher grazing pressure under trees than in the open paddock. Pasture nutrient concentration (P, K and S) was higher in both native and sown pastures beneath the tree canopy compared with the open paddock. This study indicates that, in this temperate environment, scattered trees do not adversely affect pasture production, and that they can improve some pasture nutrients.en
dc.languageenen
dc.publisherCSIRO Publishingen
dc.relation.ispartofThe Rangeland Journalen
dc.titleThe patterns of grazed pasture associated with scattered trees across an Australian temperate landscape: an investigation of pasture quantity and qualityen
dc.typeJournal Articleen
dc.identifier.doi10.1071/RJ10068en
dc.subject.keywordsAgroforestryen
local.contributor.firstnamePhoebeen
local.contributor.firstnameBrianen
local.contributor.firstnameMarken
local.contributor.firstnameDaviden
local.contributor.firstnameNicken
local.contributor.firstnameTerryen
local.contributor.firstnameLeopolden
local.subject.for2008070501 Agroforestryen
local.subject.seo2008960504 Ecosystem Assessment and Management of Farmland, Arable Cropland and Permanent Cropland Environmentsen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolOffice of Faculty of Science, Agriculture, Business and Lawen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolOffice of Faculty of Science, Agriculture, Business and Lawen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolUNE Business Schoolen
local.profile.emailpbarnes@une.edu.auen
local.profile.emailbwilson7@une.edu.auen
local.profile.emailmtrotte3@une.edu.auen
local.profile.emaildlamb@une.edu.auen
local.profile.emailnrei3@une.edu.auen
local.profile.emaillbayerl2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20110920-154146en
local.publisher.placeAustraliaen
local.format.startpage121en
local.format.endpage130en
local.identifier.scopusid79959540021en
local.peerreviewedYesen
local.identifier.volume33en
local.identifier.issue2en
local.title.subtitlean investigation of pasture quantity and qualityen
local.contributor.lastnameBarnesen
local.contributor.lastnameWilsonen
local.contributor.lastnameTrotteren
local.contributor.lastnameLamben
local.contributor.lastnameReiden
local.contributor.lastnameKoenen
local.contributor.lastnameBayerleinen
dc.identifier.staffune-id:pbarnesen
dc.identifier.staffune-id:bwilson7en
dc.identifier.staffune-id:mtrotte3en
dc.identifier.staffune-id:dlamben
dc.identifier.staffune-id:nrei3en
dc.identifier.staffune-id:lbayerl2en
local.profile.orcid0000-0002-7983-0909en
local.profile.orcid0000-0002-4377-9734en
local.profile.orcid0000-0001-8337-3133en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:8769en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleThe patterns of grazed pasture associated with scattered trees across an Australian temperate landscapeen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorBarnes, Phoebeen
local.search.authorWilson, Brianen
local.search.authorTrotter, Marken
local.search.authorLamb, Daviden
local.search.authorReid, Nicken
local.search.authorKoen, Terryen
local.search.authorBayerlein, Leopolden
local.uneassociationUnknownen
local.year.published2011en
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