Climate change alters stoichiometry of phosphorus and nitrogen in a semiarid grassland
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چکیده
منابع مشابه
Climate change alters stoichiometry of phosphorus and nitrogen in a semiarid grassland.
Nitrogen (N) and phosphorus (P) are essential nutrients for primary producers and decomposers in terrestrial ecosystems. Although climate change affects terrestrial N cycling with important feedbacks to plant productivity and carbon sequestration, the impacts of climate change on the relative availability of N with respect to P remain highly uncertain. In a semiarid grassland in Wyoming, USA, w...
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Human activities have significantly altered nitrogen (N) availability in most terrestrial ecosystems, with consequences for community composition and ecosystem functioning. Although studies of how changes in N availability affect biodiversity and community composition are relatively common, much less remains known about the effects of N inputs on the coupled biogeochemical cycling of N and phos...
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Atmospheric concentrations of methane (CH4 ) and nitrous oxide (N2 O) have increased over the last 150 years because of human activity. Soils are important sources and sinks of both potent greenhouse gases where their production and consumption are largely regulated by biological processes. Climate change could alter these processes thereby affecting both rate and direction of their exchange wi...
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Karl J. Niklas,* Thomas Owens, Peter B. Reich and Edward D. Cobb Department of Plant Biology, Cornell University, Ithaca, NY 14853, USA Department of Forest Resources, University of Minnesota, St Paul, MN 55108, USA *Correspondence: E-mail: [email protected] Abstract We adopted previous N : P stoichiometric models for zooplankton relative growth to predict the relative growth rates of the leaves...
متن کاملa synchronic and diachronic approach to the change route of address terms in the two recent centuries of persian language
terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2012
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.2012.04349.x