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6 papers found.
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Variation in photosynthesis and stomatal conductance among red maple (Acer rubrum) urban planted cultivars and wildtype trees in the southeastern United States

Contributions Conceptualization: Eleanor C. Lahr, Robert R. Dunn, Steven D. Frank. Formal analysis: Eleanor C. Lahr. Funding acquisition: Robert R. Dunn, Steven D. Frank. Investigation: Eleanor C. Lahr ... . Methodology: Eleanor C. Lahr. Project administration: Eleanor C. Lahr. Resources: Robert R. Dunn, Steven D. Frank. Supervision: Robert R. Dunn, Steven D. Frank. Visualization: Eleanor C. Lahr. 15 / 18

Warming and drought combine to increase pest insect fitness on urban trees

Urban habitats are characterized by impervious surfaces, which increase temperatures and reduce water availability to plants. The effects of these conditions on herbivorous insects are not well understood, but may provide insight into future conditions. Three primary hypotheses have been proposed to explain why multiple herbivorous arthropods are more abundant and damaging in...

The Effects of Urban Warming on Herbivore Abundance and Street Tree Condition

Trees are essential to urban habitats because they provide services that benefit the environment and improve human health. Unfortunately, urban trees often have more herbivorous insect pests than rural trees but the mechanisms and consequences of these infestations are not well documented. Here, we examine how temperature affects the abundance of a scale insect, Melanaspis...

Urbanization Increases Pathogen Pressure on Feral and Managed Honey Bees

Given the role of infectious disease in global pollinator decline, there is a need to understand factors that shape pathogen susceptibility and transmission in bees. Here we ask how urbanization affects the immune response and pathogen load of feral and managed colonies of honey bees (Apis mellifera Linnaeus), the predominant economically important pollinator worldwide. Using...

Non-Native Ambrosia Beetles as Opportunistic Exploiters of Living but Weakened Trees

Exotic Xylosandrus spp. ambrosia beetles established in non-native habitats have been associated with sudden and extensive attacks on a diverse range of living trees, but factors driving their shift from dying/dead hosts to living and healthy ones are not well understood. We sought to characterize the role of host physiological condition on preference and colonization by two...

Urban Warming Drives Insect Pest Abundance on Street Trees

Cities profoundly alter biological communities, favoring some species over others, though the mechanisms that govern these changes are largely unknown. Herbivorous arthropod pests are often more abundant in urban than in rural areas, and urban outbreaks have been attributed to reduced control by predators and parasitoids and to increased susceptibility of stressed urban plants...