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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2012.04349.x
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Dijkstra, Feike A
|e verfasserin
|4 aut
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|a Climate change alters stoichiometry of phosphorus and nitrogen in a semiarid grassland
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|c 2012
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 08.03.2013
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|a Date Revised 16.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.
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|a 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, we studied the effects of atmospheric CO(2) enrichment (to 600 ppmv) and warming (1.5/3.0°C above ambient temperature during the day/night) on plant, microbial and available soil pools of N and P. Elevated CO(2) increased P availability to plants and microbes relative to that of N, whereas warming reduced P availability relative to N. Across years and treatments, plant N : P ratios varied between 5 and 18 and were inversely related to soil moisture. Our results indicate that soil moisture is important in controlling P supply from inorganic sources, causing reduced P relative to N availability during dry periods. Both wetter soil conditions under elevated CO(2) and drier conditions with warming can further alter N : P. Although warming may alleviate N constraints under elevated CO(2) , warming and drought can exacerbate P constraints on plant growth and microbial activity in this semiarid grassland
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Quaternary Ammonium Compounds
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|a Soil
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|a Water
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|a Phosphorus
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|a 27YLU75U4W
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|a Carbon
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|a 7440-44-0
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|a Nitrogen
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|a Pendall, Elise
|e verfasserin
|4 aut
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|a Morgan, Jack A
|e verfasserin
|4 aut
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|a Blumenthal, Dana M
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|a Carrillo, Yolima
|e verfasserin
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|a LeCain, Daniel R
|e verfasserin
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|a Follett, Ronald F
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|a Williams, David G
|e verfasserin
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 196(2012), 3 vom: 09. Nov., Seite 807-815
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:196
|g year:2012
|g number:3
|g day:09
|g month:11
|g pages:807-815
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|u http://dx.doi.org/10.1111/j.1469-8137.2012.04349.x
|3 Volltext
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