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dc.contributor.authorMager, D.M.
dc.date.accessioned2010-08-03T08:16:10Z
dc.date.available2010-08-03T08:16:10Z
dc.date.issued2010
dc.identifier.citationMager, D.M. 2010. Carbohydrates in cyanobacterial soil crusts as a source of carbon in the southwest Kalahari, Botswana. Soil Biology and Biochemistry, 42, 313-318.en
dc.identifier.issn0038-0717en
dc.identifier.urihttp://hdl.handle.net/123456789/577
dc.description.abstractSemiarid ecosystems, also known as drylands, contain small amounts of carbon (C). To date only few studies have evaluated soil C dynamics in these ecosystems. Cyanobacterial soil crusts are considered a major source of organic C in semiarid ecosystems through photosynthesis, increasing soil organic C (SOC) pool as carbohydrates. This study considers cyanobacterial soil crusts as a source of C in the southwest Kalahari. Cyanobacterial soil crusts are well adapted to drylands because extracellular polysaccharide (EPS) secretions provide stabilization of soil and resistance to desiccation. The carbohydrate and chlorophyll a content were evaluated in the upper soil profile on Kalahari Sands and pan soils. Topsoil carbohydrate concentration decreased exponentially with depth. The carbohydrate content produced in cyanobacterial soil crusts in the southwest Kalahari represents up to 75% of the total SOC and is thus an essential component for the fertility of Kalahari Sand soils.en
dc.description.sponsorshipThe study was financially supported by Manchester Metropolitan University and the John Dalton Institute, and a separate grant from the Royal Society and was carried out as part of the work for the degree of Doctor of Phylosophy.en
dc.format.extent312499 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.subjectSemiarid ecosystemsen
dc.subjectC poolen
dc.subjectCyanobacterial soil crustsen
dc.subjectEPSen
dc.subjectCarbohydratesen
dc.titleCarbohydrates in cyanobacterial soil crusts as a source of carbon in the southwest Kalahari, Botswanaen
dc.typeJournalArticlesen
dc.cibjournalSoil Biology and Biochemistryen
dc.cibprojectEcosystem services and alien invasionsen


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