Ueli A. Hartwig

Academia Engiadina — Switzerland

Agricultural and Biological Sciences · Life Sciences

38h-index6.1kcitations80works0.02yr avg
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Research Topics

Legume Nitrogen Fixing Symbiosis(38), Soil Carbon and Nitrogen Dynamics(34), Plant responses to elevated CO2(34), Agronomic Practices and Intercropping Systems(21), Atmospheric chemistry and aerosols(17)

Publications80 total

Biological Nitrogen Fixation: A Key Process for the Response of Grassland Ecosystems to Elevated Atmospheric [CO2]
Ecological studies·2006· 8 cited
Balancing the C/N Ratio of Terrestrial Ecosystems in a CO2-Rich World: Example of an Ecosystem Control of Symbiotic N2 Fixation
Kluwer Academic Publishers eBooks·2005
Significance of Legumes for the Distribution of Plant Species in Grassland Ecosystems at Different Altitudes in the Alps
Plant Ecology·2005· 11 citedOpen Access
Mycorrhizas improve nitrogen nutrition of <i>Trifolium repens</i> after 8 yr of selection under elevated atmospheric CO<sub>2</sub> partial pressure
New Phytologist·2005· 61 cited
Ten years of free‐air CO<sub>2</sub> enrichment altered the mobilization of N from soil in Lolium perenne L. swards
Global Change Biology·2004· 95 cited
Fertile temperate grassland under elevated atmospheric CO2—role of feed-back mechanisms and availability of growth resources
European Journal of Agronomy·2004· 36 cited
Arbuscular mycorrhizal fungi benefit from 7 years of free air CO<sub>2</sub> enrichment in well‐fertilized grass and legume monocultures
Global Change Biology·2004· 47 cited
Denitrification and interactions between nitrification and methane oxidation under elevated atmospheric CO2
2004
Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide
BioScience·2004· 1.4k citedOpen Access
Nitrous oxide emissions from grass swards during the eighth year of elevated atmospheric <i>p</i>CO<sub>2</sub> (Swiss FACE)
Global Change Biology·2003· 77 cited
Gross fluxes of nitrogen in grassland soil exposed to elevated atmospheric pCO2 for seven years
Soil Biology and Biochemistry·2003· 33 cited
Denitrification in grass swards is increased under elevated atmospheric CO2
Soil Biology and Biochemistry·2003· 116 cited
Linking sequestration of <sup>13</sup>C and <sup>15</sup>N in aggregates in a pasture soil following 8 years of elevated atmospheric CO<sub>2</sub>
Global Change Biology·2002· 52 cited
Significance of legumes for the distribution of plants in grassland ecosystems along an altitudinal gradient.
Multi-function grasslands: quality forages, animal products and landscapes. Proceedings of the 19th General Meeting of the European Grassland Federation, La Rochelle, France, 27-30 May 2002.·2002
Arbuscular mycorrhiza infection enhances the growth response of Lolium perenne to elevated atmospheric pCO2
Journal of Experimental Botany·2002· 37 citedOpen Access
Does the Response of Perennial Ryegrass to Elevated CO&lt;sub&gt;2&lt;/sub&gt; Concentration Depend on the Form of the Supplied Nitrogen?
Biologia Plantarum·2002· 6 citedOpen Access
Nitrogen‐15 budget in model ecosystems of white clover and perennial ryegrass exposed for four years at elevated atmospheric pCO<sub>2</sub>
Global Change Biology·2002· 28 cited
Does the response of perennial ryegrass to elevated CO2 dependon the form of the supplied nitrogen
Biologia Plantarum·2002· 1 cited
Long-term effects of free air CO2 enrichment and management on grassland ecosystems.
Multi-function grasslands: quality forages, animal products and landscapes. Proceedings of the 19th General Meeting of the European Grassland Federation, La Rochelle, France, 27-30 May 2002.·2002
Increase in the concentrations of amino acids in the vascular tissue of white clover and white lupin after defoliation: an indication of a N feedback regulation of symbiotic N<sub>2</sub> fixation
Agronomie·2001· 23 citedOpen Access
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Frequent Co-authors

J. Nösberger(26), A. Lüscher(22), Marco Frehner(10), S. Zanetti(8), Herbert Blum(8), Chris van Kessel(8), George R. Hendrey(7), Thomas Hebeisen(6), Donald A. Phillips(6), Bernt Fischer(5), Carl A. Maxwell(4), Cecillia M. Joseph(4), J.P.F. Almeida(4), Michael Richter(4), Hermann Blum(3), D. Suter(3), William R. Horwáth(3), Markus Daepp(3), Emmanuel Frossard(3), Adrian Leuchtmann(3)