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 20 of 31 for “"Plant-pollinator"”.
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Biotic and Abiotic Drivers of Plant-Pollinator Interaction Rewiring
In this dissertation, I examine variation in plant-pollinator interaction patterns. I present two observational studies exploring drivers of interaction variation, followed by an experiment in which I demonstrate the effect of changing plant-pollinator interactions. First, I use a structural …
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Effects of Cucumber Mosaic Virus on Plant-Pollinator Relationships
The interactions between plants and associated insects are complex and often mediated by volatile organic chemicals (VOCs). Infection by viruses alter plant volatile signatures and consequently affect how insects interact with plants. In previous flight arena experiments in the Carr lab, cucumber …
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Effects of plant viral pathogens on plant-pollinator relationships
… that virus infection triggers changes in host plants that render them more attractive to pollinators. This builds on previous work, which showed that in tomato Cucumber mosaic virus (CMV) infection enhanced emission of volatile organic compounds (VOCs) that attracted bumblebees and enhanced …
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Multi-faceted analyses of plant-pollinator interactions: From ecological communities to individual foraging decisions
… this methodology to a conservation practice planting native prairie plant communities within crop fields called “prairie strips”. I found improved ecosystem functions and bee body condition in crop fields with prairie strips versus conventional crop fields, and these benefits were not negated …
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Plant-pollinator interaction networks in remnant and reconstructed Palouse Prairie in Eastern WA, USA
… is often focused on re-establishing native plant communities, without considering the larger ecological community, specifically pollinators, despite their being critical to native forb reproduction. Further, ecological restoration has the potential to mitigate global pollinator declines by …
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Impacts of shared pollinators and community composition on plant-pollinator interactions and their fitness consequences
… are prime examples of such complex systems. Plant-pollinator communities are characterized by extensive pollinator sharing among plant species. My dissertation explores some of the consequences of this reliance on shared pollinators on the structure of plant-pollinator interaction networks, …
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Plant-pollinator relationships of culturally significant food and medicine plants in the Great Lakes Region
Wild plant and pollinator populations have experienced declines globally in recent years. While species declines have often been examined for their impacts ecologically and economically, little is known about how species declines will impact humans culturally. All Indigenous cultures in North …
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The birds, the bees and Erica: vulnerability of plant-pollinator communities in fragmented fynbos landscapes
… collapse that can eventually impinge on plants' reproductive success (e.g. through pollen-limitation). Agriculture, timber plantations, invasion by alien trees and the urbanisation of the southern Cape lowlands have transformed and fragmented large parts of the former distribution range …
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The Role of Continuous Flowering Phenology for in Neotropical Plant-Pollinator Interactions for Use in Conservation
… is posited to result from a unique assemblage of plant species that produce the highest spatio-temporal predictability of food resources. A rare component of the Neotropical flora that contributes largely to the spatio-temporal predictability of food resources is found in understory shrub or …
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General flowering in an asesonal tropical forest : plant reproductive phenology and plant-pollinator interactions in a lowland dipterocarp forest in Sarawak
本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである
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Variation in pollination across a fragmented landscape at the Cape of Africa
… of established conservation areas to conserve plant-pollinator interactions. The study area was the species rich, but highly fragmented West Coast Lowlands of the Cape of Africa. I focused on the Nectarinia sunbird pollination system and the oil-collecting Rediviva bee pollination system. …
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Plant-flower visitor interactions in the Sacred Valley of Peru
The structural organisation of species-rich plant-pollinator networks is important to understanding their ecology and evolution and is essential for making informed conservation and restoration decisions. This thesis reports on a study located at different altitudes in nine tributary valleys of the …
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Social and ecological dimensions of supporting wild pollinators in tropical smallholder farms
… influence the availability of habitat for wild pollinators in tropical smallholder farming landscapes. The dissertation consists of three data chapters from independent investigations, combining a global systematic review and meta-analysis with social and ecological fieldwork in western Kenya. …
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Understanding the role and impact of introduced honey bees in a submontane indigenous forest ecosystem
… impacts, both positive and negative, on native plants and flower visitors in native ecosystems. This research aimed to investigate the impact of managed introductions of Apis mellifera in native forest dominated by Weinmannia racemosa and Ixerba brexioides, two native forest trees used …
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The ecology of rodent pollination in Liparia parva (Fabaceae)
… has given rise to a broad suite of adaptive plant traits including dull coloured and geoflorous flowers, copious sucrose rich nectar, nocturnal anthesis and nectar production and a musky odour. The Fynbos endemic, Liparia parva (Fabaceae) has been recognised to exhibit several of these …
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Pheromones, nectar, and computer vision: investigating large-scale patterns of chemodiversity.
… biodiversity in all ecosystems, and in plant - insect interactions especially mediates mutualisms, antagonisms, defense, reproduction, and many more fundamentally important ecosystem processes. Working with large datasets across multiple insect systems, this dissertation provides insight …
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Understanding the development, evolution, and function of bullseye pigmentation patterns in Hibiscus trionum
… patterns decorate the corolla of many flowering plants and fulfil important biotic and abiotic functions. These petal patterns are created by spatial differences in pigmentation, cell shape and texture of the adaxial petal epidermis. The mechanisms controlling formation and evolution of these …
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THE ANTAGONISTIC AND MUTUALISTIC PLANT-INSECT INTERACTIONS OF PITCHER’S THISTLE (CIRSIUM PITCHERI [TORR. EX EAT.] TORR. & A. GRAY, ASTERACEAE), A FEDERALLY THREATENED GREAT LAKES DUNE AND COBBLE SHORE ENDEMIC PLANT
… used for integrated pest management of invasive plant species but it is not without risks to native plants. I researched the non-target impacts of the biological control agent, the seed head weevil Larinus planus (Coleoptera: Curculionidae) on the Great Lakes dune and cobble shore endemic …
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Phenological responses of British orchids and their pollinators to climate change: an assessment using herbarium and museum collections
Climate change might de-couple plant-pollinator relationships if species respond differentially to environmental cues, such as temperature, but studies have been hindered by lack of long-term data. This research validates natural history collections as a source of long-term phenological data and, …
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