Gail A. Langellotto

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The structural complexity of habitats has been espoused as an important factor influencing natural-enemy abundance and food-web dynamics in invertebrate-based communities, but a rigorous synthesis of published studies has not heretofore been conducted. We performed a meta-analytical synthesis of the density response of natural enemies (invertebrate(More)
Although urbanization is increasing worldwide, relatively few studies have investigated patterns of urban biodiversity outside of city parks and reserves, in urban neighborhoods where people live and work. We evaluated models including local and landscape factors that might influence the bee and butterfly richness of community gardens located within densely(More)
A variety of crops are grown in New York City community gardens. Although the production of many crops benefits from pollination by bees, little is known about bee abundance in urban community gardens or which crops are specifically dependent on bee pollination. In 2005, we compiled a list of crop plants grown within 19 community gardens in New York City(More)
The widespread occurrence of dispersal polymorphisms among insects is consistent with the hypothesis that fitness costs are associated with flight capability. Although trade-offs between flight capability and reproduction are well documented in the females of many wing-polymorphic insect species, the relationship between dispersal capability and(More)
Facultative hyperparasitism is likely to be the most common form of intraguild predation among parasitoids. However, difficulties associated with studying facultative hyperparasitoids in the field have hampered a thorough understanding of their trophic ecology. In this study, we used a combination of stable isotope analysis and published natural history(More)
Many cucurbits, such as cucumbers, squashes and pumpkins, depend on pollinating bees in order to set fruit. However, fruit yield and progeny vigor in these plants generally decreases as heterospecific pollen deposition increases. We studied how the spatial area dedicated to cucumbers (Cucumis sativis), versus other flowering plants, influenced the(More)
Unexplained variation in the relationship between herbivore densities and the shortterm appearance of crop damage is sometimes observed in pest management. Here we used a Þeld survey of commercial cotton Þelds and a linked questionnaire for cooperating pest control advisors to document the existence of such unexplained variation in the impact of the western(More)
Research on urban insect pollinators is changing views on the biological value and ecological importance of cities. The abundance and diversity of native bee species in urban landscapes that are absent in nearby rural lands evidence the biological value and ecological importance of cities and have implications for biodiversity conservation. Lagging behind(More)
Title of Thesis: NUTRIENT AND STRUCTURAL EFFECTS OF DETRITUS ON FOOD WEB INTERACTIONS IN AN INTERTIDAL MARSH Degree candidate: Jessica Hines Degree and year: Master of Science, 2003 Thesis directed by: Professor Robert F. Denno Department of Entomology In most systems the majority of plant primary production is not directly consumed by herbivores, but(More)
BACKGROUND Individual risk factors for obesity are well-known, but environmental characteristics that influence individual risk, especially in rural communities, are not confirmed. Rural communities face unique challenges to implementing environmental strategies, such as walkability, aimed at supporting weight healthy lifestyles. Cooperative Extension, a(More)
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