Advanced search    

Search: authors:"Robert R. Dunn"

26 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

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

Species loss on spatial patterns and composition of zoonotic parasites

Author for correspondence: Nyeema C. Harris e-mail: Nyeema C. Harris 0 2 Robert R. Dunn 1 0 Present address: Department of Environmental Science , Policy and Management , University of California

How many and which ant species are being accidentally moved around the world?

Vernica Miravete Nria Roura-Pascual Robert R. Dunn Crisanto Gmez 0 Department of Biological Sciences and Keck Center for Behavioral Biology, North Carolina State University , Raleigh, NC, USA 1

How many and which ant species are being accidentally moved around the world?

. Suarez AV, McGlynn TP, Tsutsui ND. 2009 Biogeographic and taxonomic patterns of introduced 4 Robert R. Dunn Department of Biology, The W. M. Keck Center for Behavioral Biology, North Carolina State

The sudden emergence of pathogenicity in insect–fungus symbioses threatens naive forest ecosystems

Invasive symbioses between wood-boring insects and fungi are emerging as a new and currently uncontrollable threat to forest ecosystems, as well as fruit and timber industries throughout the world. The bark and ambrosia beetles (Curculionidae: Scolytinae and Platypodinae) constitute the large majority of these pests, and are accompanied by a diverse community of fungal symbionts...

Ubiquity and Diversity of Human-Associated Demodex Mites

Robert R. Dunn 0 Sergios-Orestis Kolokotronis, Fordham University, United States of America 0 1 Department of Biological Sciences and W. M. Keck Center for Behavioral Biology, North Carolina State

The Southern Megalopolis: Using the Past to Predict the Future of Urban Sprawl in the Southeast U.S

The future health of ecosystems is arguably as dependent on urban sprawl as it is on human-caused climatic warming. Urban sprawl strongly impacts the urban ecosystems it creates and the natural and agro-ecosystems that it displaces and fragments. Here, we project urban sprawl changes for the next 50 years for the fast-growing Southeast U.S. Previous studies have focused on...

Fungi Identify the Geographic Origin of Dust Samples

There is a long history of archaeologists and forensic scientists using pollen found in a dust sample to identify its geographic origin or history. Such palynological approaches have important limitations as they require time-consuming identification of pollen grains, a priori knowledge of plant species distributions, and a sufficient diversity of pollen types to permit spatial...

A New (Old), Invasive Ant in the Hardwood Forests of Eastern North America and Its Potentially Widespread Impacts

Biological invasions represent a serious threat for the conservation of biodiversity in many ecosystems. While many social insect species and in particular ant species have been introduced outside their native ranges, few species have been successful at invading temperate forests. In this study, we document for the first time the relationship between the abundance of the...

Tradeoffs in the Evolution of Caste and Body Size in the Hyperdiverse Ant Genus Pheidole

The efficient investment of resources is often the route to ecological success, and the adaptability of resource investment may play a critical role in promoting biodiversity. The ants of the “hyperdiverse” genus Pheidole produce two discrete sterile castes, soldiers and minor workers. Within Pheidole, there is tremendous interspecific variation in proportion of soldiers. The...

Tracing the Rise of Ants - Out of the Ground

R. Dunn 0 Corrie S. Moreau, Field Museum of Natural History, United States of America 0 1 Department of Biology, North Carolina State University , Raleigh , North Carolina, United States of America, 2

Home Life: Factors Structuring the Bacterial Diversity Found within and between Homes

Most of our time is spent indoors where we are exposed to a wide array of different microorganisms living on surfaces and in the air of our homes. Despite their ubiquity and abundance, we have a limited understanding of the microbial diversity found within homes and how the composition and diversity of microbial communities change across different locations within the home. Here...

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...

Environmental and historical imprints on beta diversity: insights from variation in rates of species turnover along gradients

A common approach for analysing geographical variation in biodiversity involves using linear models to determine the rate at which species similarity declines with geographical or environmental distance and comparing this rate among regions, taxa or communities. Implicit in this approach are weakly justified assumptions that the rate of species turnover remains constant along...

Temporal variability is a personalized feature of the human microbiome

Leff 1 Yoshiki Vázquez-Baeza Antonio Gonzalez Rob Knight Robert R Dunn Noah Fierer 1 0 Department of Biology, California State University , Northridge, Northridge, CA 91330-8303 , USA 1 Cooperative

Using Historical and Experimental Data to Reveal Warming Effects on Ant Assemblages

Historical records of species are compared with current records to elucidate effects of recent climate change. However, confounding variables such as succession, land-use change, and species invasions make it difficult to demonstrate a causal link between changes in biota and changes in climate. Experiments that manipulate temperature can overcome this issue of attribution, but...

Biodiversity on Broadway - Enigmatic Diversity of the Societies of Ants (Formicidae) on the Streets of New York City

Each year, a larger proportion of the Earth's surface is urbanized, and a larger proportion of the people on Earth lives in those urban areas. The everyday nature, however, that humans encounter in cities remains poorly understood. Here, we consider perhaps the most urban green habitat, street medians. We sampled ants from forty-four medians along three boulevards in New York...

More individuals but fewer species: testing the ‘more individuals hypothesis’ in a diverse tropical fauna

A positive relationship between species richness and productivity is often observed in nature, but the causes remain contentious. One mechanism, the ‘more individuals hypothesis’ (MIH), predicts richness increases monotonically with density, as a function of resource flux. To test the MIH, we manipulated resource abundance in a community of tropical rainforest litter ants and...

Strong influence of regional species pools on continent-wide structuring of local communities

There is a long tradition in ecology of evaluating the relative contribution of the regional species pool and local interactions on the structure of local communities. Similarly, a growing number of studies assess the phylogenetic structure of communities, relative to that in the regional species pool, to examine the interplay between broad-scale evolutionary and fine-scale...