Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/23713
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dc.contributor.authorDickie, Jenniferen_UK
dc.contributor.authorParsons, Anthony Jen_UK
dc.date.accessioned2016-07-19T22:40:40Z-
dc.date.available2016-07-19T22:40:40Z-
dc.date.issued2012-11en_UK
dc.identifier.urihttp://hdl.handle.net/1893/23713-
dc.description.abstractVegetation type and cover play an important role in the operation of geomorphological processes by controlling runoff and sediment dynamics. In drylands, land degradation is particularly sensitive to these eco-geomorphic interactions. Although many geomorphological studies of land degradation focus on the change in hydrological response as a function of vegetation cover, few have investigated how the autogenic response of plants may influence the susceptibility of soil to erosion through a change of soil resources. This study investigates the hypothesis that shrub communities possess greater soil parameter heterogeneity compared with grasslands and assesses how these different scales of heterogeneity can influence the susceptibility of soil to erosion.  Soil samples were taken from seven 60 m × 60 m plots within grasslands, shrublands and badlands situated in the Sneeuberg uplands of the central Karoo. One hundred and eight samples per plot were analysed for bulk density, organic matter, pH, conductivity and available sodium, calcium, magnesium, potassium and phosphorus. Geostatistical analyses determined that the grassland landscape was largely homogenous in its distribution of soil parameters, whereas shrublands demonstrated an increase in heterogeneity. Periodicity in the semi-variograms indicated that regular patterns across the landscape were evident for all parameters and thus likely to represent the differences between shrub and intershrub regions, areas of high and low erodibility. More pronounced patterns were identified in the badlands. This indicates that, if the conditions are right, changes in plant-soil interactions caused by soil parameter redistribution in shrubland landscapes can exacerbate erosion, leading to further degradation in the form of badlands.en_UK
dc.language.isoenen_UK
dc.publisherWiley-Blackwellen_UK
dc.relationDickie J & Parsons AJ (2012) Eco-geomorphological processes within grasslands, shrublands and badlands in the semi-arid Karoo, South Africa. Land Degradation and Development, 23 (6), pp. 534-547. https://doi.org/10.1002/ldr.2170en_UK
dc.rightsThis is the peer reviewed version of the following article: Dickie, J. A. and Parsons, A. J. (2012), Ecogeomorphological processes within grasslands, shrublands and badlands in the semi-arid Karoo, South Africa. Land Degrad. Dev., 23: 534–547. doi: 10.1002/ldr.2170, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/ldr.2170/full. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en_UK
dc.subjectsoil heterogeneityen_UK
dc.subjectland degradationen_UK
dc.subjectgeostatisticsen_UK
dc.subjectKarooen_UK
dc.subjectSouth Africaen_UK
dc.subjectbadlandsen_UK
dc.titleEco-geomorphological processes within grasslands, shrublands and badlands in the semi-arid Karoo, South Africaen_UK
dc.typeJournal Articleen_UK
dc.identifier.doi10.1002/ldr.2170en_UK
dc.citation.jtitleLand Degradation and Developmenten_UK
dc.citation.issn1099-145Xen_UK
dc.citation.issn1085-3278en_UK
dc.citation.volume23en_UK
dc.citation.issue6en_UK
dc.citation.spage534en_UK
dc.citation.epage547en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.author.emailj.a.dickie@stir.ac.uken_UK
dc.citation.date27/06/2012en_UK
dc.contributor.affiliationUniversity of Leicesteren_UK
dc.contributor.affiliationUniversity of Sheffielden_UK
dc.identifier.isiWOS:000312541100004en_UK
dc.identifier.scopusid2-s2.0-84870920230en_UK
dc.identifier.wtid559740en_UK
dc.contributor.orcid0000-0002-6302-3854en_UK
dc.date.accepted2012-05-10en_UK
dcterms.dateAccepted2012-05-10en_UK
dc.date.filedepositdate2016-07-04en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionAMen_UK
local.rioxx.authorDickie, Jennifer|0000-0002-6302-3854en_UK
local.rioxx.authorParsons, Anthony J|en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate2016-07-08en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/all-rights-reserved|2016-07-08|en_UK
local.rioxx.filenameDickie_and_Parsons_Article.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source1085-3278en_UK
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