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Delaware, OH, United States

Ohio Wesleyan University is a private liberal arts college in Delaware, Ohio, United States. It was founded in 1842 by Methodist leaders and Central Ohio residents as a nonsectarian institution, and is a member of the Ohio Five — a consortium of Ohio liberal arts colleges. Ohio Wesleyan has always admitted students irrespective of religion or race and maintained that the university "is forever to be conducted on the most liberal principles. Wikipedia.

Chaowasku T.,Leiden University | Johnson D.M.,Ohio Wesleyan University | van der Ham R.W.J.M.,Leiden University | Chatrou L.W.,Wageningen University

On the basis of molecular phylogenetics, pollen morphology and macromorphology, a new genus of the tribe Miliuseae, Hubera, segregrated from Polyalthia and allied to Miliusa, is established and described. It is characterized by the combination of reticulate tertiary venation of the leaves, axillary inflorescences, a single ovule per ovary and therefore single-seeded monocarps, seeds with a flat to slightly raised raphe, spiniform(-flattened peg) ruminations of the endosperm, and pollen with a finely and densely granular infratectum. Twenty-seven species are accordingly transferred to this new genus. © 2012 Magnolia Press. Source

Alexeev V.A.,University of Alaska Fairbanks | Jackson C.H.,Ohio Wesleyan University
Climate Dynamics

Surface albedo feedback is widely believed to be the principle contributor to polar amplification. However, a number of studies have shown that coupled ocean-atmosphere models without ice albedo feedbacks still produce significant polar amplification in 2 × CO2 runs due to atmospheric heat transports and their interaction with surface conditions. In this article, the relative importance of atmospheric heat transport and surface albedo is assessed using a conceptual 2-box energy balance model in a variety of different model climates. While both processes are shown to independently contribute to the polar amplified response of the model, formal feedback analysis indicates that a strong surface albedo response will tend to reduce the effect of atmospheric heat transport in the full model. We identify several scenarios near the present day climate in which, according to this formal feedback analysis, atmospheric heat transport plays no role in shaping the equilibrium warming response to uniform forcing. However, a closer analysis shows that even in these scenarios the presence of atmospheric heat transport feedback does play a significant role in shaping the trajectory by which the climate adjusts to its new equilibrium. © 2012 Springer-Verlag Berlin Heidelberg. Source

Kelly S.A.,Ohio Wesleyan University | Pomp D.,University of North Carolina at Chapel Hill
Trends in Genetics

Variation in voluntary exercise behavior is an important determinant of long-term human health. Increased physical activity is used as a preventative measure or therapeutic intervention for disease, and a sedentary lifestyle has generally been viewed as unhealthy. Predisposition to engage in voluntary activity is heritable and induces protective metabolic changes, but its complex genetic/genomic architecture has only recently begun to emerge. We first present a brief historical perspective and summary of the known benefits of voluntary exercise. Second, we describe human and mouse model studies using genomic and transcriptomic approaches to reveal the genetic architecture of exercise. Third, we discuss the merging of genomic information and physiological observations, revealing systems and networks that lead to a more complete mechanistic understanding of how exercise protects against disease pathogenesis. Finally, we explore potential regulation of physical activity through epigenetic mechanisms, including those that persist across multiple generations. © 2013 Elsevier Ltd. Source

Downing A.L.,Ohio Wesleyan University | Leibold M.A.,University of Texas at Austin
Freshwater Biology

Many studies indicate that biodiversity in ecosystems affects stability, either by promoting temporal stability of ecosystem attributes or by enhancing ecosystem resistance and resilience to perturbation. The effects on temporal stability are reasonably well understood and documented but effects on resistance and resilience are not. Here, we report results from an aquatic mesocosm experiment in which we manipulated the species richness and composition of aquatic food webs (macrophytes, macro-herbivores and invertebrate predators), imposed a pulse disturbance (acidification), and monitored the resistance (initial response) and resilience (recovery) of ecosystem productivity and respiration. We found that species-rich macroinvertebrate communities had higher resilience of whole-ecosystem respiration, but were not more resistant to perturbations. We also found that resilience and resistance were unaffected by species composition, despite the strong role composition is known to play in determining mean levels of function in these communities. Biodiversity's effects on resilience were probably mediated through complex pathways affecting phytoplankton and microbial communities (e.g. via changes in nutrient regeneration, grazing or compositional changes) rather than through simpler effects (e.g. insurance effects, enhanced facilitation) although these simpler mechanisms probably played minor roles in enhancing respiration resilience. Current mechanisms for understanding biodiversity's effects on ecosystem stability have been developed primarily in the context of single-trophic level communities. These mechanisms may be overly simplistic for understanding the consequences of species richness on ecosystem stability in complex, multi-trophic food webs where additional factors such as indirect effects and highly variable life-history traits of species may also be important. © 2010 Blackwell Publishing Ltd. Source

Meyer A.,Ohio Wesleyan University
Environmental and Resource Economics

Willingness to pay for an environmental improvement is a function of how long it takes to deliver the improvement. To measure the effect of time on benefits, I utilize a discrete choice experiment that includes an attribute for delay until the improvement occurs and simultaneously estimate discount rates and valuation parameters. I estimate the present value of immediate and delayed Minnesota River Basin improvements using discount rates directly estimated from the econometric model. Compared to an immediate river basin cleanup, Minnesota residents lose almost half of the benefits when cleanup is delayed by 5 years. © 2012 Springer Science+Business Media B.V. Source

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