World's Best Scientists 2026 revealed!
Ueli A. Hartwig

Ueli A. Hartwig

D-Index & Metrics

Plant Science and Agronomy

D-Index
47
Citations
8089
World Ranking
2540
National Ranking
46

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Ecosystem
  • Botany

His main research concerns Agronomy, Lolium perenne, Trifolium repens, Nitrogen fixation and Ecosystem. His Lolium perenne research includes themes of Monoculture, Soil water, Soil fertility and Repens. His Trifolium repens research is classified as research in Botany.

The Terrestrial ecosystem research Ueli A. Hartwig does as part of his general Ecosystem study is frequently linked to other disciplines of science, such as Carbon sequestration, therefore creating a link between diverse domains of science. His Terrestrial ecosystem research is multidisciplinary, incorporating elements of Soil organic matter, Primary production and Biomass. His work carried out in the field of Perennial plant brings together such families of science as Nutrient, Nitrogen cycle, Carbon sink and Rhizobium leguminosarum.

His most cited work include:

  • Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide (956 citations)
  • Growth response of Trifolium repens L. and Lolium perenne L. as monocultures and bi‐species mixture to free air CO2 enrichment and management (219 citations)
  • Stimulation of Symbiotic N2 Fixation in Trifolium repens L. under Elevated Atmospheric pCO2 in a Grassland Ecosystem. (200 citations)

What are the main themes of his work throughout his whole career to date?

Ueli A. Hartwig spends much of his time researching Agronomy, Trifolium repens, Lolium perenne, Nitrogen fixation and Botany. Ueli A. Hartwig has included themes like Nutrient, Ecosystem, Soil fertility and Horticulture in his Agronomy study. Ueli A. Hartwig has researched Ecosystem in several fields, including Biomass and Temperate climate.

His research integrates issues of Soil biology, Soil carbon, Soil water and Repens in his study of Trifolium repens. His biological study spans a wide range of topics, including Monoculture, Carbon dioxide, Human fertilization and Nitrate. His Botany research is multidisciplinary, relying on both Molecular biology, Nitrogenase, Nitrogen cycle and Rhizobia.

He most often published in these fields:

  • Agronomy (64.91%)
  • Trifolium repens (40.35%)
  • Lolium perenne (40.35%)

What were the highlights of his more recent work (between 2002-2006)?

  • Agronomy (64.91%)
  • Lolium perenne (40.35%)
  • Trifolium repens (40.35%)

In recent papers he was focusing on the following fields of study:

Agronomy, Lolium perenne, Trifolium repens, Soil water and Ecology are his primary areas of study. His Agronomy research incorporates elements of Arbuscular mycorrhiza and Biodiversity. His Lolium perenne research is multidisciplinary, incorporating perspectives in Denitrification and Carbon dioxide.

His Trifolium repens research incorporates themes from Monoculture and Nitrogen cycle. Ueli A. Hartwig works mostly in the field of Soil water, limiting it down to concerns involving Nitrogen fixation and, occasionally, Soil processes, Soil fertility and Botany. His Grassland, Ecosystem, Plant ecology and Species richness study in the realm of Ecology connects with subjects such as Altitude.

Between 2002 and 2006, his most popular works were:

  • Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide (956 citations)
  • Ten years of free-air CO2 enrichment altered the mobilization of N from soil in Lolium perenne L. swards (84 citations)
  • Denitrification in grass swards is increased under elevated atmospheric CO2 (83 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Ecosystem
  • Botany

Ueli A. Hartwig focuses on Carbon dioxide, Lolium perenne, Ecosystem, Soil organic matter and pCO2. His Carbon dioxide study combines topics in areas such as Biomass and Perennial plant, Fertilizer, Agronomy. His study in the fields of Terrestrial ecosystem and Primary production under the domain of Ecosystem overlaps with other disciplines such as Carbon sequestration.

His study with Soil organic matter involves better knowledge in Ecology. His pCO2 research incorporates Denitrification, Environmental chemistry, Nitrous oxide, Botany and Nitrification.

Best Publications

  • Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide

    Yiqi Luo;Bo Su;William S. Currie;Jeffrey S. Dukes

  • Growth response of Trifolium repens L. and Lolium perenne L. as monocultures and bi‐species mixture to free air CO2 enrichment and management

    Thomas Hebeisen;Andreas Lüscher;Silvia Zanetti;Bernt Fischer

  • A Chalcone and Two Related Flavonoids Released from Alfalfa Roots Induce nod Genes of Rhizobium meliloti

    Carl A. Maxwell;Ueli A. Hartwig;Cecillia M. Joseph;Donald A. Phillips

  • Stimulation of Symbiotic N2 Fixation in Trifolium repens L. under Elevated Atmospheric pCO2 in a Grassland Ecosystem.

    S. Zanetti;U. A. Hartwig;A. Luscher;T. Hebeisen

  • Flavonoids Released Naturally from Alfalfa Seeds Enhance Growth Rate of Rhizobium meliloti

    Ueli A. Hartwig;Cecillia M. Joseph;Donald A. Phillips

  • Evidence that P deficiency induces N feedback regulation of symbiotic N2 fixation in white clover (Trifolium repens L.)

    JoséP.F. Almeida;Ueli A. Hartwig;Marco Frehner;Josef Nösberger

  • The regulation of symbiotic N2 fixation: a conceptual model of N feedback from the ecosystem to the gene expression level

    Ueli A. Hartwig

  • Soil gas fluxes of N2O, CH4 and CO2 beneath Lolium perenne under elevated CO2: The Swiss free air carbon dioxide enrichment experiment

    P. Ineson;P.A. Coward;U.A. Hartwig

  • Chrysoeriol and Luteolin Released From Alfalfa Seeds Induce Nod Genes in Rhizobium Meliloti

    Ueli A. Hartwig;Carl A. Maxwell;Cecillia M. Joseph;Donald A. Phillips

  • The effects of elevated CO2 on symbiotic N2 fixation: a link between the carbon and nitrogen cycles in grassland ecosystems

    J. F. Soussana;J. F. Soussana;U. A. Hartwig;U. A. Hartwig

  • Does nitrogen nutrition restrict the CO 2 response of fertile grassland lacking legumes

    S. Zanetti;U. A. Hartwig;C. van Kessel;A. Lüscher

  • Yield response of Lolium perenne swards to free air CO2 enrichment increased over six years in a high N input system on fertile soil

    Markus Daepp;Daniel Suter;José P. F. Almeida;Hubert Isopp

  • Phosphorus deficiency increases the argon-induced decline of nodule nitrogenase activity in soybean and alfalfa

    Jean-Jacques Drevon;Ueli A. Hartwig

  • Microbial community changes in the rhizospheres of white clover and perennial ryegrass exposed to free air carbon dioxide enrichment (FACE)

    Marcus Schortemeyer;Ueli A. Hartwig;George R. Hendrey;Michael J. Sadowsky

  • Direct evidence that symbiotic N2 fixation in fertile grassland is an important trait for a strong response of plants to elevated atmospheric CO2.

    Andreas Lüscher;Ueli A. Hartwig;Daniel Suter;Josef Nösberger

  • Carbon-13 input and turn-over in a pasture soil exposed to long-term elevated atmospheric CO2

    Chris Van Kessel;Jennifer Nitschelm;William R. Horwath;David Harris

  • Net soil carbon input under ambient and elevated CO2 concentrations: isotopic evidence after 4 years

    Chris Van Kessel;William R. Horwath;Ueli Hartwig;David Harris

  • Denitrification in grass swards is increased under elevated atmospheric CO2

    Elizabeth Baggs;Michael Richter;G. Cadisch;U. A. Hartwig

  • Influence of an Elevated Atmospheric CO2 Content on Soil and Rhizosphere Bacterial Communities Beneath Lolium perenne and Trifolium repens under Field Conditions

    Unknown

  • Ten years of free-air CO2 enrichment altered the mobilization of N from soil in Lolium perenne L. swards

    Manuel K. Schneider;Andreas Lüscher;Michael Richter;Urs Aeschlimann

  • Source-sink relations in Lolium perenne L. as reflected by carbohydrate concentrations in leaves and pseudo-stems during regrowth in a free air carbon dioxide enrichment (FACE) experiment*

    B. U. Fischer;M. Frehner;T. Hebeisen;S. Zanetti

  • Nitrous oxide emissions from grass swards during the eighth year of elevated atmospheric pCO2 (Swiss FACE)

    Elizabeth Baggs;M. Richter;U. A. Hartwig;G. Cadisch

  • Symbiotic N2 fixation of various legume species along an altitudinal gradient in the Swiss Alps

    Katja A. Jacot;Andreas Lüscher;Josef Nösberger;Ueli A. Hartwig

  • Soil moisture and potassium affect the performance of symbiotic nitrogen fixation in faba bean and common bean

    U. Ravi Sangakkara;Ueli A. Hartwig;Josef Nösberger

  • Elevated atmospheric CO2 alters microbial population structure in a pasture ecosystem

    Constanza M. Montealegre;Chris Van Kessel;Jurg M. Blumenthal;Hor Gil Hur

Frequent Co-Authors

George R. Hendrey
George R. Hendrey City University of New York
Chris van Kessel
Chris van Kessel University of California, Davis
Georg Cadisch
Georg Cadisch University of Hohenheim
William R. Horwath
William R. Horwath University of California, Davis
Michael J. Sadowsky
Michael J. Sadowsky University of Minnesota
Elizabeth M. Baggs
Elizabeth M. Baggs University of Edinburgh

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