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 “"bee pollination"”.
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Variation in pollination across a fragmented landscape at the Cape of Africa
… of Africa. I focused on the Nectarinia sunbird pollination system and the oil-collecting Rediviva bee pollination system. Before exploring the consequences of habitat fragmentation, it was necessary to study the natural history of the plant-pollinator interactions. Among 16 conservation areas, I …
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Extending Plant-Plant Facilitation Theory to Pollinators: Do Desert Shrubs Act as Magnets?
… attract pollinators can increase the relative pollination rates of neighbouring plants. The principal objective of this thesis was to 1) systematically review the theoretical and methodological trends in pollinator facilitation and magnet hypothesis literature, 2) to determine whether desert …
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Essays on the economics of bee-friendly beef
The decline in bee populations, driven by biodiversity loss, poses a major threat to food production systems, as many wild plants and agricultural crops rely on bee pollination services. Addressing this issue requires coordinated efforts from producers, retailers, and consumers to restore …
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Introgression of genes from rape to wild turnip
… flowering, chromosomal compatibility, successful pollination and development of the zygote, germination, establishment and reproduction of hybrid progeny. The goal of this thesis was to generate data on as many steps in this process as possible and integrate them into a predictive statistical …
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Floral evolution of long-tubed Erica species
… in the Cape and exhibits a diversity of pollination syndromes and floral traits. This makes Erica well-suited to study the evolution of floral traits and how they impact speciation. The first chapter explored the role of ultraviolet colouration by recording its prevalence across Erica …
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Whose Honey, Whose Hive?: Genre and Rhetorical Agency in the U.S. Colony Collapse Disorder
… the environmental crisis of the honey bee Colony Collapse Disorder, commonly known as CCD. Since 2007, the United States has lost on average a third of its honey bee colonies each year to CCD. The crisis has potentially serious environmental consequences. Without honey bee pollination …
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Petal cell shape and flower-pollinator interaction in Nicotiana
Petal epidermal cell shape has been shown to affect pollination success in flowering plants. Conical epidermal cells may increase grip for insect pollinators and enhance flower colouration compared to non-conical cells. Nicotiana (Solanaceae) presents a diverse range of petal cell shapes. …