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Probabilistic description of vegetation ecotones using remote sensing

dc.contributor.authorDe Klerk, H. M.en_ZA
dc.contributor.authorBurgess, N. D.en_ZA
dc.contributor.authorVisser, V.en_ZA
dc.date.accessioned2018-06-06T06:38:11Z
dc.date.available2018-06-06T06:38:11Z
dc.date.issued2018
dc.identifier.citationDe Klerk, H. M., Burgess, N. D. & Visser, V. 2018. Probabilistic description of vegetation ecotones using remote sensing. Ecological Informatics, doi:10.1016/j.ecoinf.2018.06.001en_ZA
dc.identifier.issn1878-0512 (online)
dc.identifier.issn1574-9541 (print)
dc.identifier.otherdoi:10.1016/j.ecoinf.2018.06.001
dc.identifier.urihttp://hdl.handle.net/10019.1/104059
dc.descriptionCITATION: De Klerk, H. M., Burgess, N. D. & Visser, V. 2018. Probabilistic description of vegetation ecotones using remote sensing. Ecological Informatics, doi:10.1016/j.ecoinf.2018.06.001.en_ZA
dc.descriptionThe original publication is available at https://www.sciencedirect.com
dc.description.abstractEcotone transitions between vegetation types are of interest for understanding regional diversity, ecological processes and biogeographical patterns. Ecotones are seldom represented on vector, line-based vegetation maps, which imply an instantaneous change from one vegetation type to another. We use supervised, probabilistic classification of remotely sensed (RS) imagery to investigate the location, width and character of ecotones between acid Sandstone and alkaline Limestone fynbos on the Agulhas plain at the southern tip of Africa, known for rapid speciation of plants and exceptional plant biodiversity at the global scale. The resultant probability map, together with the probability graphs developed for a few transects across the transition, are able to map and describe (1) sharp, narrow ecotones (under five meters); (2) moderate ecotones that have a distinct band of transition (over a few hundred meters); and (3) complex ecotones that include slow transitions, interdigitated boundaries and outliers. The latter class of transitions include portions where vegetation types change sharply over a few meters, but due to the interdigitated boundaries they are mapped over hundreds of meters to a kilometre at a landscape scale. In this study area, our findings suggest that the character of the Agulhas limestone-acid ecotone is probably more complex than often noted. Moderate transitions and broad mosaics are difficult to indicate in a vector vegetation map, whereas RS probabilistic classifications can output images indicating core areas, important for key species and biodiversity pattern, and transitional zones, important for ecosystem processes and perhaps plant evolution, which distinction is important for conservation planning.en_ZA
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S1574954118300402
dc.format.extent14 pages : illustrations
dc.language.isoen_ZAen_ZA
dc.publisherElsevieren_ZA
dc.subjectProbabilistic classification -- Remote sensingen_ZA
dc.subjectEcotone -- Remote sensingen_ZA
dc.subjectVegetation transition -- Remote sensingen_ZA
dc.titleProbabilistic description of vegetation ecotones using remote sensingen_ZA
dc.typeArticleen_ZA
dc.description.versionPost print
dc.rights.holderElsevieren_ZA


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