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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)
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)
lants exhibit enormous ecophysiological and functional diversity, which underlies variation in growth rates, productivity, population and community dynamics, and ecosystem function. The broad congruence of these variations with climatic and environmental conditions on local, regional, and global scales has fostered the concept that plant ecophysiological(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)
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)
The paper distinguishes three types of poverty-mass poverty, conjunctural poverty and destitution-from the historical record, and how they have been dealt with. It emphasizes that the only cure for mass poverty is modern economic growth. It outlines the ethical underpinnings of two different perspectives for dealing with problems of destitution and(More)
Description: This course is a broad introduction to organization theory. We will begin with classical organization theories and then move on to cover a wide variety of perspectives for studying organizations. The course will consist of lectures and discussions based on weekly reading assignments. Students will be expected to keep up with the readings and be(More)