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Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Each copy of any part of a JSTOR transmission must contain the same copyright notice that(More)
Numerous studies, including those of desert plants, have shown reduced stomatal conductance under elevated atmospheric CO 2. As a consequence, soil water has been postulated to increase. Soil water was measured for >4 yr at the Nevada Desert Free Air CO 2 Enrichment (FACE) Facility to determine if elevated atmospheric CO 2 conserves soil water for a desert(More)
Terrestrial ecosystems control carbon dioxide fluxes to and from the atmosphere through photosynthesis and respiration, a balance between net primary productivity and heterotrophic respiration, that determines whether an ecosystem is sequestering carbon or releasing it to the atmosphere. Global and site-specific data sets have demonstrated that climate and(More)
Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Each copy of any part of a JSTOR transmission must contain the same copyright notice that(More)
Rising atmospheric CO 2 has been predicted to reduce litter decomposition as a result of CO 2-induced reductions in litter quality. However, available data have not supported this hypothesis in mesic ecosystems, and no data are available for desert or semi-arid ecosystems, which account for more than 35% of the Earth's land area. The objective of our study(More)
The effect of elevated CQ2 on photosynthesis, respiration, and growth efficiency of sunflower plants at the whole-stand level was investigated using a whole-system gas exchange facility (the EcoCELLs at the Desert Research Institute) and a 13C natural tra-cer method. Total daily photosynthesis (GPP), net primary production (NPP), and respiration under the(More)
Undergraduate Programs—The Department of Ecology and Evolutionary Biology offers a broad range of courses in the biosciences: animal behavior, animal natural history, plant biology, and advanced courses in these and related areas. Students may elect a BA in biological sciences, BA in ecology and evolutionary biology, BS in ecology and evolutionary biology,(More)
Estimates obtained from the first nationally representative longitudinal study of students in the United States in grades K-8, robust to both probit and propensity score matching models, provide empirical support for James Coleman's social capital theory of Catholic school impacts on student behavior. Catholic schooling has a positive impact on the academic(More)