Determinants of gemmae output in the liverwort Lophozia ventricosa

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dc.contributor.advisorSöderström, Larsen_ZA
dc.contributor.advisorHedderson, Terry Aen_ZA
dc.contributor.authorAlgar, Natalieen_ZA
dc.date.accessioned2017-05-19T12:44:25Z
dc.date.available2017-05-19T12:44:25Z
dc.date.issued2004en_ZA
dc.description.abstractThe spacial variation and population parameters affecting gemmae output of a boreal and arctic liverwort species, Lophozia ventricosa, were studied in Trnndelag, a boreal region of central Norway and in the arctic tundra on Svalbard. The population parameters investigated included colony size, colony shoot density, number of gemmae per shoot, proportion of gemmiferous shoots and gemmiferous shoot density. The gemmae output in a colony was calculated as the product of the number of gemmae per shoot, colony size and gemmifeorus shoot density. A Nested Analysis of Variance was used to partition population parameters spacially and a Pearsons Product-Moment Correlation was used to evaluate which of these population parameters affect gemmae output in a colony. The number of gemmae per shoot differed significantly between areas, populations and colonies, and was significantly varied between populations and colonies on Svalbard. No significant variation in the number of gemmae per shoot was found in Trnndelag. Population influences on shoot density, gemmiferous shoot density and gemmae output were significant in Trnndelag. This was expected, as more shoots in a colony is thought to influence gemmiferous shoot density and gemmae output. In Trnndelag, the only significant relation that can explain gemmae output is colony size whereas on Svalbard, gemmae output in a colony is affected by colony size, shoot density and number of gemmae per shoot. The results indicate that most of the variation in gemmae output occurs at the population level and that gemmae output differs between the arctic and boreal regions.en_ZA
dc.identifier.apacitationAlgar, N. (2004). <i>Determinants of gemmae output in the liverwort Lophozia ventricosa</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/24381en_ZA
dc.identifier.chicagocitationAlgar, Natalie. <i>"Determinants of gemmae output in the liverwort Lophozia ventricosa."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2004. http://hdl.handle.net/11427/24381en_ZA
dc.identifier.citationAlgar, N. 2004. Determinants of gemmae output in the liverwort Lophozia ventricosa. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Algar, Natalie AB - The spacial variation and population parameters affecting gemmae output of a boreal and arctic liverwort species, Lophozia ventricosa, were studied in Trnndelag, a boreal region of central Norway and in the arctic tundra on Svalbard. The population parameters investigated included colony size, colony shoot density, number of gemmae per shoot, proportion of gemmiferous shoots and gemmiferous shoot density. The gemmae output in a colony was calculated as the product of the number of gemmae per shoot, colony size and gemmifeorus shoot density. A Nested Analysis of Variance was used to partition population parameters spacially and a Pearsons Product-Moment Correlation was used to evaluate which of these population parameters affect gemmae output in a colony. The number of gemmae per shoot differed significantly between areas, populations and colonies, and was significantly varied between populations and colonies on Svalbard. No significant variation in the number of gemmae per shoot was found in Trnndelag. Population influences on shoot density, gemmiferous shoot density and gemmae output were significant in Trnndelag. This was expected, as more shoots in a colony is thought to influence gemmiferous shoot density and gemmae output. In Trnndelag, the only significant relation that can explain gemmae output is colony size whereas on Svalbard, gemmae output in a colony is affected by colony size, shoot density and number of gemmae per shoot. The results indicate that most of the variation in gemmae output occurs at the population level and that gemmae output differs between the arctic and boreal regions. DA - 2004 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2004 T1 - Determinants of gemmae output in the liverwort Lophozia ventricosa TI - Determinants of gemmae output in the liverwort Lophozia ventricosa UR - http://hdl.handle.net/11427/24381 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/24381
dc.identifier.vancouvercitationAlgar N. Determinants of gemmae output in the liverwort Lophozia ventricosa. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2004 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/24381en_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.titleDeterminants of gemmae output in the liverwort Lophozia ventricosaen_ZA
dc.typeBachelor Thesis
dc.type.qualificationlevelHonours
dc.type.qualificationnameBSc (Hons)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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