We report a decadally resolved record of atmospheric CO₂ concentration for the last 1000 years, obtained from the West Antarctic Ice Sheet (WAIS) Divide shallow ice core. The most prominent feature of the pre-industrial period is a rapid ∼7 ppm decrease of CO₂ in a span of ∼20–50 years at...
Horizontal ice-core sites, where ancient ice is exposed at the glacier surface, offer unique opportunities for paleo-studies of trace components requiring large sample volumes. Following previous work at the Pâkitsoq ice margin in West Greenland, we use a combination of geochemical parameters measured in the ice matrix (δ¹⁸O[subscript ice]) and...
Children with developmental disabilities (DDs) have been observed to have delays in motor skills compared to their age-matched peers without disabilities. Empirical research suggests that children with motor skill delays experience more internalizing and externalizing behaviours and that early motor skill difficulties may be an important indicator of future increases...
Current public health guidelines for physical activity (PA) were primarily formulated using evidence collected from a series of prospective cohort epidemiological investigations that measured self-reported PA. In light of this observation, and the known discordance between self-reported and objectively-monitored PA, it remains common for researchers to assess compliance to current...
With an estimated 5.4 million Americans living with Alzheimer’s disease facing
individual, social, and financial burdens, researchers must make cognitive assessment inquiries a priority (Alzheimer’s Association, 2016). Cognition encompasses multiple aspects of thought
processes, such as multiple types of memory, planning, inhibitory control, attention, and
processing speed. The higher level...
Interpretation of ice core trace gas records depends on an accurate understanding of the processes that smooth the atmospheric signal in the firn. Much work has been done to understand the processes affecting air transport in the open pores of the firn, but a paucity of data from air trapped...
The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary causes for the decline of the species, degradation of existing habitat also has been considered an important...
The distribution and geographic range of Greater Sage-Grouse (Centrocercus urophasianus) have been reduced by 56% since European settlement. Although loss and fragmentation of sagebrush (Artemisia spp.) habitats have been cited as the primary causes for the decline of the species, degradation of existing habitat also has been considered an important...
BACKGROUND: In light of the changes in precipitation and soil water availability expected with climate change,
understanding the mechanisms underlying plant responses to water deficit is essential. Toward that end we have
conducted an integrative analysis of responses to drought stress in the perennial C₄ grass and biofuel crop,
Panicum...
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virgatum L.)
Meyer, E., Aspinwall, M. J., Lowry, D. B., Palacio-Mejía, J. D., Logan, T. L., Fay,
P. A