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 16 of 16 for “"Wild Bees"”.
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Wild bees in temperate deciduous forests: how does management affect bee communities, and can we use active remote sensing data to model bee biodiversity?
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Pollinator People: an ethnography of bees, bee advocates and possibilities for multispecies commoning in Toronto and London, ON
… species are in decline around the world. Bees are the most important pollinators in many parts of the world, and the combination of population declines in wild bees and widespread health problems among domesticated honey bees have potentially devastating impacts on both ecosystem health …
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Understanding the mutualistic interaction between greater honeyguides and four co-existing human cultures in northern Tanzania
… eat wax, and to obtain it, they guide people to bees' nests by flying from one tree to another while giving a distinctive chattering call, in the direction of a wild bees' nest. This relationship is mutually beneficial: the hunters harvest valuable honey, and the honeyguides feed on the beeswax …
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Toxicity assessment of pesticides and biopesticides on wild and managed bees (Hymenoptera, Apoidea), and richness evaluation in mediterranean and tropical agroecosystems
Bees (Hymenoptera, Apoidea) are the main pollinator insects for wild and cultivated plants, being of crucial environmental and economic importance. Their global decline, driven by anthropogenic factors, including the use of synthetic pesticides, is an alarming concern. Biopesticides can be a viable …
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The effect of neonicotinoids on Apis mellifera: A revisit
… Effects of Neonicotinoid Pesticides on Honey Bees and Wild Bees", in light of unsound statistical methods used in the original study. In the first part of this paper, I attempted to replicate the analysis underlying key findings in the original paper. In the second part, I reanalyzed the data …
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Wild bee responses to land use change: investigating the role of bee body size
… required to sustain species and populations. Wild bees (Hymenoptera: Apoidea) are essential pollinators for many wild and cultivated flowering plants, and exhibit marked differences in life history traits. The consequences of land use change may therefore affect wild bees differently, but this …
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Competitive Effects of Honey Bee (Apis melifera) Hives on Morphology and Morphology-Based Abundance of Bumble Bees (Apidae: Bombus) in an Urban Prairie Landscape (City of Red Deer, Alberta)
… there were measurable effects of managed honey bees (Apis melifera) on bumble bee (Bombus) populations in the City of Red Deer, with an intent to aid wild bee conservation in the area as well as decision-making regarding possible legislation of honey bee keeping within the city. A growing body …
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TREE PLANTING STRATEGIES AS NATURE-BASED SOLUTION FOR THE PROVISION OF ECOSYSTEM SERVICES
… and meadow management as key drivers for wild pollinator conservation This study aims to advance the understanding of the role of urban afforestation in biodiversity conservation, using wild bees as bioindicators. By adopting a chronosequence approach in forests of different ages and …
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Cooperation, ecology and behaviour in the honeyguide-human mutualism
… cooperate with humans by guiding them to wild bees' nests. This mutualism enables each species to obtain a high-calorie, preferred food: wax for honeyguides and honey for humans. This foraging cooperation is an intriguing example of a vertebrate-vertebrate mutualism in which humans are …
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Mutualism between honeyguides, beekeepers and honey-hunters in the southern highlands of Tanzania
… chattering call to guide honeyhunters to bees' nests, which honey-hunters harvest with the help of smoke and tools. Honey-hunters increase their harvesting yield by finding bees' nests with the help of honeyguides, and honeyguides feed on leftover beeswax. The relationship between …
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Effects of plant viral pathogens on plant-pollinator relationships
… organic compounds (VOCs) that attracted bumblebees and enhanced pollination of infected plants. To test if this hypothesis is tenable with other viruses and with plants other than tomato, and to determine if pollinators might derive some advantage by visiting flowers of infected plants, I used …
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Enhancing the benefits to biodiversity and ecosystem services within arable field margins
… shown to benefit flower-visiting insects such as wild bees, and recent evidence suggests that they can also enhance the levels of pollination and pest control in adjacent crop fields. They may also promote a suite of additional ecosystem services of societal and agronomic importance, but this has …
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Floral Scent in Salix L. and the Role of Olfactory and Visual Cues for Pollinator Attraction of Salix caprea L.
… was highest for Hymenoptera (primarily honeybees, bumblebees, and solitary wild bees) and Lepidoptera (many nocturnal and only few diurnal species). During the day primarily bees and butterflies dominated, whereas during and after dawn moths were the only flower visitors. Altogether, …
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Honey Bee (Apis Mellifera) Foraging Preferences are Negatively Correlated with Alfalfa Leafcutting Bee (Megachile Rotundata) Productivity in Virginian Landscapes
Honey bees (Apis mellifera) may serve as bioindicators of habitat quality for themselves and also other insect pollinators because we can observe, decode, map, and analyze the information encoded in the waggle dance communication behavior, which allows us to know where and when bees are collecting …
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Natural and Anthropogenic Drivers of Variation in Bumble Bee Gut Microbiotas
Bumble bees are key pollinators in natural and agricultural ecosystems. Like all social bees, their health is supported by a core gut microbiota consisting of a few, specialized bacterial phylotypes. The composition and community structure of bumble bee gut microbiotas can vary in response to …
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Bee diversity in Angola and community change along an altitudinal gradient at Serra da Chela (Bruco)
Insects, including wild bees (Hymenoptera: Anthophila) are exceptional model organisms to assess the effect of climate variation on species richness along altitudinal gradients. Climate variables and weather conditions are of extreme importance for insects particularly since their capacity of body …