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 8 of 8 for “"insect pollinator"”.
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Ornamental Plants Impact Insect Pollinator Abundance and Diversity in Gardens
As pollinator populations decline globally, public interest in creating pollinator gardens to help sustain bee abundance and diversity is rising, and there are many lists of recommended pollinator plantings and suggestions for bee-friendly flowers. However, these suggestions often lack grounding in …
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Pollination Biology of <i>Ailanthus altissima</i> (Mill.) Swingle (Tree-of-Heaven) in the Mid-Atlantic United States
… U.S. This study was conducted to determine the insect pollinator fauna visiting <i>A. altissima</i> and to study general pollinator visitation patterns associated with the tree's nectar profile. A list of taxa visiting trees within each of three sites was developed from collected insects. …
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Wildflowers in Working Landscapes: Establishment Methods and Impacts on Pollinators and Cattle
Insect pollinator populations are in decline globally due to habitat loss and degradation, climate change, pesticide use, and other stressors. These declines have severe implications for the ecosystem services provided by pollinators. Prior research has shown that creating wildflower plots in …
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Pollination in a changing world: function and resilience
… by agriculture, largely due to impacts on wild pollinators that require natural habitat. However, although more biodiverse communities often provide greater functional performance and stability, specific effects of agriculture on pollination is poorly understood. In this thesis, I used landscape …
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Molecular phylogenetics, systematics, reproductive safeguarding and chromosome evolution of the genus Lachenalia (Asparagaceae: Scilloideae)
… limitation, resulting from a low abundance of insect pollinators, promotes the evolution of reproductive safeguarding traits (self compatibility, autonomous selfing, bird pollination and clonal propagation) in low insect abundance contexts (i.e., infertile fynbos heathland, and species which …
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Landscape-scale habitat requirements of flower-visiting insects in the Nene Valley Nature Improvement Area
Recorded population declines of flower visiting insects are a cause for concern. The presence of an abundant and diverse community of insects is essential for ecosystem stability and continued agricultural prosperity. As human populations continue to increase so do the pressures on the natural …
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Effects of temperature and pollinator availability on plant reproductive success in the Indiana spring ephemeral community
… is a key driver of phenology in both plants and insects, and even small changes in temperature can impact the reproductive success of insect-pollinated plants by influencing access to pollinator services. While it is well-established that temperature variation directly impacts the flowering …
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THE ORCHARD AND ITS DWELLERS: PATHWAYS FOR RECONCILING NATURE CONSERVATION WITH INTENSIVE AGRICULTURE IN THE NON VALLEY APPLE DISTRICT, NORTHERN ITALY
L’agricoltura moderna sta affrontando la sfida globale di sfamare la crescente popolazione umana e contemporaneamente ridurre drasticamente il suo impatto ambientale. Fino ad ora, l’intensificazione agricola è avvenuta a discapito dei sistemi naturali, comportando un declino globale della …