Lichen thermal sensitivities, moisture interception and elemental accumulation in an arid South African ecosystem

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dc.contributor.advisorMusil, Charles F.
dc.contributor.advisorRaitt, Lincoln
dc.contributor.advisorZedda, Luciana
dc.contributor.authorMaphangwa, Khumbudzo Walter
dc.contributor.otherFaculty of Science
dc.date.accessioned2014-01-14T10:46:55Z
dc.date.accessioned2024-10-30T11:28:34Z
dc.date.available2011/06/13 09:28
dc.date.available2011/06/13
dc.date.available2014-01-14T10:46:55Z
dc.date.available2024-10-30T11:28:34Z
dc.date.issued2010
dc.descriptionMagister Scientiae (Biodiversity and Conservation Biology)en_US
dc.description.abstractElevated temperatures accompanying climate warming are expected to have adverse effects on sensitive lichen species. This premise was examined by measuring the sensitivity of different lichen species to elevated temperatures in the laboratory and in the field. Laboratory studies involved the exposure of nine hydrated lichen species (Xanthoparmelia austro-africana, X. hyporhytida, Xanthoparmelia sp., Xanthomaculina hottentotta, Teloschistes capensis, Ramalina sp., Flavopuntelia caperata, Lasallia papulosa, Parmotrema austrosinensis) collected from sites of different aridity and mean annual temperature for 2 hourly intervals to temperatures ranging from 24ºC to 48ºC in a forced daft oven and measuring their respiration rates and maximum quantum yield of PSII. Field studies involved simultaneous hourly measurements of ground surface air temperatures and Lichen effective quantum yield of PSII of hydrated lichen species populations under ambient and artificially modified environmental conditions.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/16818
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectClimate warmingen_US
dc.subjectDiurnal measurementsen_US
dc.subjectEffective temperatureen_US
dc.subjectElemental concentrationsen_US
dc.subjectFog and dew precipitationen_US
dc.subjectLethal temperatureen_US
dc.subjectLichensen_US
dc.subjectMoisture uptakeen_US
dc.subjectPhotosynthetic quantum yielden_US
dc.subjectRespirationen_US
dc.titleLichen thermal sensitivities, moisture interception and elemental accumulation in an arid South African ecosystemen_US
dc.typeThesisen_US

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Magister Scientiae (Biodiversity and Conservation Biology) - MSc (Biodiv & Cons Biol)