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 21 for “"Native bees"”.
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Native Bees and Pollen Collection: How Flexible Are They?
… thus the reproduction of crops and wild plants. Native bees may be a free source of pollination services and act as ‘insurance’ against potential honey bee losses in Australia. This study aims is to determine whether native bees collect pollen mainly from native plants, with which they have a …
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Native Bees and Pollen Collection: How Flexible Are They?
… thus the reproduction of crops and wild plants. Native bees may be a free source of pollination services and act as ‘insurance’ against potential honey bee losses in Australia. This study aims is to determine whether native bees collect pollen mainly from native plants, with which they have a …
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Effects of the agricultural landscape on native bees and insect pests in recently established pollinator habitat
Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system
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Conserving Pollinators: An Interdisciplinary Approach to Evaluating the Ecological, Economic and Cultural Value of Native Bees in Mid-Atlantic Sustainable Agriculture
… and evaluate the opportunities and challenges to native bee conservation in Mid-Atlantic sustainable agriculture. I censused sustainable agriculture farms to assess the diversity of bees in different habitats and collected and identified over 3100 individuals representing five families, 26 genera …
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A GIS-Based Landscape Scale Model for Native Bee Habitat
Through pollination, bees are responsible for the persistence of many biological systems on our planet. Bees have also been used for thousands of years in agriculture to improve crop quality and yield. Recently, there have been declines in honeybees worldwide. This decline is concerning because it …
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Planning for Pollinators, Encouraging Biodiversity for Agriculture Resiliency
… as <em>Aphis mellifera </em>(honeybee) and other native species. This is due to a phenomenon known as colony collapse disorder (CCD) and other native bees. The decline indicates that the future habitability of earth may be in jeopardy. The solution to this crisis is to expand the habitat of native …
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Foraging Behavior of Spring Bees and Their Agricultural Implications
… honey bee populations in the last decade. Native bees have been largely neglected in research, and their floral preferences may have agricultural implications because native bees ameliorate the demand to rely solely on non-native bees. In this work, pollinator visitation to flowers with …
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Diversity and Abundance of Bees in Canadian Prairie Agroecosystems: Understanding the Role of Remnant and Restored Habitat in Supporting Native Bee Populations
… intensification has negative implications for native bee communities throughout Western Canada. Wetland remnants are a common feature within the Prairie Pothole Region of Saskatchewan and are threatened due to continued conversion to agricultural land. Approximately sixty-one million acres of …
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Aspects of Foraging in Bees: Apple Pollination, Native Bee Populations, and Honey Bee Communication
Bees are well known for their ability to pollinate a diverse range of plants. In the process of gathering food (pollen and nectar), bees transfer pollen from one flower to another, facilitating reproduction. I investigate two important aspects of foraging: pollination of an important crop by native …
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The Importance Of Surface Mining As A Landscape Variable In Shaping Wild Bee Communities In Central Appalachian Forests
… has led to widespread losses in biodiversity. Native bees (Hymenoptera, Apoidea) provide essential pollination services and have been declining in abundance dramatically in recent years. One potential cause of these declines is anthropogenic disturbance. Eleven sites were established in …
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The Bees of Two Sites in the Big Thicket National Preserve, Texas, with a Consideration of the Effects of a Rare Flooding Event
<p>Native bees are an important part of terrestrial ecosystems due to their coevolution with flowering plants. This study catalogued the bee fauna of two sandyland sites in the Big Thicket National Preserve and assessed whether a community was impacted by a historic hurricane-induced flooding …
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Evaluation of native bee nesting rates and beetle community assemblages in the presence of clothianidin in the soil of natural areas
… of the common neonicotinoid clothianidin, on native bee and beetle communities in restored prairie settings. For native bees, we found that nesting probability and nesting abundance increased in sites contaminated with clothianidin. Conversely, we did not see differences in beetle family …
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Manipulating Flowering Times and Site Attractiveness To Pollinators To Improve Yield and Fruit Quality in Strawberry
… the growing season. Proportion fruit set and native pollinator visitation observations were made. Statistics were performed in R using mixed linear models. My results showed that plug propagules produced significantly higher marketable yields than the other treatments through the season. …
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An Assessment of Non-Apis Bees as Fruit and Vegetable Crop Pollinators in Southwest Virginia
… around the globe, notably the loss of honey bees (Apis mellifera L.) to Colony Collapse Disorder, coupled with a dearth of quantitative data on non-Apis bee pollinators, led to this dissertation research, which documents the role of non-Apis bees in crop pollination in southwest Virginia. …
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Plant-flower visitor interactions in the Sacred Valley of Peru
… Using ordination analysis, hummingbirds, honeybees, flies and beetles were identified as major functional groups of flower visitors with significantly different visitation profiles. Nestedness analysis revealed that the plant-flower visitor networks had a similar structure to other published …
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Influence of Forest Management on Bumblebee-Plant Networks and Community Compositions in Eastern Kentucky Forest Openings
… have historically provided important habitat for native bees across the otherwise forested landscape in the eastern United States. Fire suppression and the loss of these important habitats are well-documented, but it is unknown if bumblebee composition or forage plant availability changes between …
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Floral abundance and soil characteristics affect wild bee community structures and nesting dynamics in tallgrass prairies
… range, yet provide essential habitats for many native plants and animals such as pollinators. Land managers work to preserve the biodiversity within these tallgrass prairies by implementing management techniques such as burning, haying, and patch-burn-grazing (PBG). All treatments utilize …
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PATTERNS OF AMERICAN BUMBLE BEE (BOMBUS PENSYLVANICUS) ABUNDANCE ACROSS RESTORED HABITATS IN EAST TEXAS ECOSYSTEMS
… support upland game birds and imperiled bumble bees.</p>
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Understanding the role and impact of introduced honey bees in a submontane indigenous forest ecosystem
… in agricultural landscapes, as well as in native ecosystems. While this has obvious benefits for economy and industry, the impacts on sustainability of native ecosystems are less easy to discern. Honey bees (Apis mellifera) have a suite of potential impacts, both positive and negative, on …
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Death by a thousand cuts: the role of pesticides, predators, and habitat patch characteristics on wild bee and insect communities
… and economically important taxa such as bees. This dissertation aims to address how habitat degradation in the form of pesticide pollution and altered trophic interactions impact bee biology and how patch physical characteristics affect the persistence and movement of beetles (Order: …
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