Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"floral diversity"”.
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Assessing intra-seasonal land surface change and long term trends in the succulent Karoo biome using coarse resolution satellite and interpolated rainfall surfaces
The Succulent Karoo is a biodiversity hot spot situated along the west coast of southern Africa. While it is predominantly recognized as a west coast vegetation type its borders stretch as far east as Steytlerville in the Little Karoo. The area contains the largest number of endemic succulent …
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Polyploid speciation in the Greater Cape Floristic Region : species limits within Ehrhara calycina
… that the role of polyploidy in generating floral diversity in the GCFR may be more important than previously thought.
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Can and do Ericas self pollinate?
… Region many lineages are characterised by large floral diversity. The genus Erica is one of these lineages, making up -7% of the CFR. Surprisingly, even though pollinators have been suggested to be a driving force of floral morphology, the role of pollinators in the floral diversification and …
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Systematic studies in the genus Melianthus L. (Melianthaceae)
… seed-coat structure and the extremely diverse floral morphology. Bersama and Greyia, the probably sister species are used as outgroups for the analysis. The monophyly of MeIianthus is demonstrated, M. major is retrieved as the basal taxon for the study group and the rest of the species are …
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The preservation of the Cape flora : status, causes of rarity, ideals and priorities
… 90 000 km2, comprises one of the world's six floral kingdoms. With 8600 species, of which 68 per cent are endemic, it ranks amongst the richest of temperate and tropical floras. Although 19 per cent of the CFR occurs in nature reserves, by far the majority of the preserved area comprises …
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Effects of Clearcutting with Whole Tree Harvesting on Woody and Herbaceous Plant Diversity After 17-Years of Regrowth in a Southern Appalachian Forest
… regeneration with whole-tree harvesting on plant diversity. Three approaches were used to study changes in species composition and structure: (1) forest level, (2) stand level, and (3) diversity indices. Within each approach the forest was stratified into three horizontal vegetative regions based …
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Impact of human land-use and rainfall variability in tropical dry forests of southwest Madagascar during the late Holocene
… and agriculture) coincided with the decline of floral diversity of the landscape, as indicated by pollen rarefaction. However, the diversity of the floral community gradually recovered, because of the persistent heterogeneity of the landscape. The core from the southern site (Lake Tsizavatsy) …