A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa

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dc.contributor.advisorMoll, Eugene Jen_ZA
dc.contributor.authorKathan, Louisen_ZA
dc.date.accessioned2016-04-01T06:55:42Z
dc.date.available2016-04-01T06:55:42Z
dc.date.issued1981en_ZA
dc.description.abstractThis survey was conducted in three phases, viz. 1. The Braun-Blanquet phytosociological technique was used to describe the vegetation of the study area and adjacent areas. Two major communities, based on plant community structure environmental factors and floristics, are recognised. 2. A determination of phytomass was obtained from five sites in the study area by means of clip-plots from a plant community of post-fire ages of about twenty years, ten years and one year. In this study three structural elements of the fynbos were distinguished viz. proteoid, restioid and "remainder". It was established that the average growth rate for the approximately 20 year old proteoid community was 656 kg/ha/yr and for the ten year old community it was 309,2 kg/ha/yr. The marked difference in growth rate of the proteoid element is due to a slow growth rate until the community is some ten years old and thereafter there is a rapid increase in growth. The restioid component tended to show a decrease in phytomass with increasing age viz. 225, 123,4 and 207,3 kg/ha for one year, ten and approximately twenty year post-fire ages. For th e "remainder" it was found that this also decreased with increasing age viz. 380, 54,5 and 25,5 kg/ha for one year, ten and approximately twenty year post fire ages. 3. The effect of the June fire on the bush-cut vegetation of the study area in the Silver Mine Nature Reserve is discussed. The regeneration of plant species was monitored for twelve months in five randomly selected, permanently marked plots. Field observation revealed that 65,1% of the species regenerated from underground organs, such as rhizomes and corms, and the remaining 34,9% of the plant species regenerated from seed. Based on the phytomass study and rate of regeneration of the plant species in the area it appears that an approximate 15 year fire interval is the most acceptable. Bibliography: pages 104-119.en_ZA
dc.identifier.apacitationKathan, L. (1981). <i>A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/18484en_ZA
dc.identifier.chicagocitationKathan, Louis. <i>"A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1981. http://hdl.handle.net/11427/18484en_ZA
dc.identifier.citationKathan, L. 1981. A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kathan, Louis AB - This survey was conducted in three phases, viz. 1. The Braun-Blanquet phytosociological technique was used to describe the vegetation of the study area and adjacent areas. Two major communities, based on plant community structure environmental factors and floristics, are recognised. 2. A determination of phytomass was obtained from five sites in the study area by means of clip-plots from a plant community of post-fire ages of about twenty years, ten years and one year. In this study three structural elements of the fynbos were distinguished viz. proteoid, restioid and "remainder". It was established that the average growth rate for the approximately 20 year old proteoid community was 656 kg/ha/yr and for the ten year old community it was 309,2 kg/ha/yr. The marked difference in growth rate of the proteoid element is due to a slow growth rate until the community is some ten years old and thereafter there is a rapid increase in growth. The restioid component tended to show a decrease in phytomass with increasing age viz. 225, 123,4 and 207,3 kg/ha for one year, ten and approximately twenty year post-fire ages. For th e "remainder" it was found that this also decreased with increasing age viz. 380, 54,5 and 25,5 kg/ha for one year, ten and approximately twenty year post fire ages. 3. The effect of the June fire on the bush-cut vegetation of the study area in the Silver Mine Nature Reserve is discussed. The regeneration of plant species was monitored for twelve months in five randomly selected, permanently marked plots. Field observation revealed that 65,1% of the species regenerated from underground organs, such as rhizomes and corms, and the remaining 34,9% of the plant species regenerated from seed. Based on the phytomass study and rate of regeneration of the plant species in the area it appears that an approximate 15 year fire interval is the most acceptable. Bibliography: pages 104-119. DA - 1981 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1981 T1 - A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa TI - A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa UR - http://hdl.handle.net/11427/18484 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18484
dc.identifier.vancouvercitationKathan L. A study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africa. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 1981 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18484en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherBotanyen_ZA
dc.titleA study of certain ecological aspects pertaining to a Leucadendron laureolum community at the Silver Mine Nature Reserve, South Africaen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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