Ueli A. Hartwig

6.1k citations

59 papers · 4.6k indexed · 1 hit paper · h-index 35

Co-authors: J. Nösberger A. Lüscher Donald A. Phillips Cecillia M. Joseph Marco Frehner Carl A. Maxwell George R. Hendrey S. Zanetti
Topics: Legume Nitrogen Fixing Symbiosis (31 papers)Plant responses to elevated CO2 (28 papers)Soil Carbon and Nitrogen Dynamics (27 papers)
Cited by: Soil Science Plant Science Agronomy and Crop Science
Journals: PLANT PHYSIOLOGY Journal of Bacteriology New Phytologist
Partner nations: Switzerland United States Hungary

In The Last Decade

Ueli A. Hartwig

58 papers receiving 4.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide

2004 1.0k citations Yiqi Luo, Bo Su et al. BioScience profile →

Peers

Countries citing papers authored by Ueli A. Hartwig

Since Specialization

Citations

This map shows the geographic impact of Ueli A. Hartwig's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ueli A. Hartwig with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ueli A. Hartwig more than expected).

Fields of papers citing papers by Ueli A. Hartwig

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ueli A. Hartwig. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ueli A. Hartwig. The network helps show where Ueli A. Hartwig may publish in the future.

Co-authorship network of co-authors of Ueli A. Hartwig

This figure shows the co-authorship network connecting the top 25 collaborators of Ueli A. Hartwig. A scholar is included among the top collaborators of Ueli A. Hartwig based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ueli A. Hartwig. Ueli A. Hartwig is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Mycorrhizas improve nitrogen nutrition of Trifolium repens after 8 yr of selection under elevated atmospheric CO₂ partial pressure 2005 ·New Phytologist ·Hannes Gamper,Ueli A. Hartwig,Adrian Leuchtmann	48
2	Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxidebreakdown → 2004 ·BioScience ·Yiqi Luo,Bo Su,William S. Currie,Jeffrey S. Dukes,Adrien C. Finzi,Ueli A. Hartwig,Bruce A. Hungate,(unknown),Ram Oren,William J. Parton,Diane E. Pataki,(unknown),Donald R. Zak,Christopher B. Field	1049
3	Fertile temperate grassland under elevated atmospheric CO2—role of feed-back mechanisms and availability of growth resources 2004 ·European Journal of Agronomy ·A. Lüscher,(unknown),Herbert Blum,Ueli A. Hartwig,J. Nösberger	29
4	Does the response of perennial ryegrass to elevated CO2 dependon the form of the supplied nitrogen 2002 ·Biologia Plantarum ·Vít Gloser,Marco Frehner,A. Lüscher,J. Nösberger,Ueli A. Hartwig	1
5	Nitrogen‐15 budget in model ecosystems of white clover and perennial ryegrass exposed for four years at elevated atmospheric pCO₂ 2002 ·Global Change Biology ·Ueli A. Hartwig,A. Lüscher,J. Nösberger,Chris van Kessel	20
6	Does the Response of Perennial Ryegrass to Elevated CO<sub>2</sub> Concentration Depend on the Form of the Supplied Nitrogen? 2002 ·Biologia Plantarum ·Vít Gloser,Marco Frehner,A. Lüscher,J. Nösberger,Ueli A. Hartwig	6
7	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 N₂ fixation 2001 ·Agronomie ·Ueli A. Hartwig,(unknown)	16
8	Nitrogen plays a major role in leaves when source-sink relations change: C and N metabolism in Lolium perenne growing under free air CO 2 enrichment 2000 ·Australian Journal of Plant Physiology ·(unknown),Marco Frehner,J.P.F. Almeida,Herbert Blum,(unknown),Ueli A. Hartwig,A. Lüscher,D. Suter,J. Nösberger	34
9	Evidence that P deficiency induces N feedback regulation of symbiotic N2 fixation in white clover (Trifolium repens L.) 2000 ·Journal of Experimental Botany ·J.P.F. Almeida,Ueli A. Hartwig,Marco Frehner,J. Nösberger,A. Lüscher	160
10	Elevated atmospheric CO₂ does not affect per se the preference for symbiotic nitrogen as opposed to mineral nitrogen of Trifolium repens L. 1998 ·Plant Cell & Environment ·S. Zanetti,Ueli A. Hartwig,J. Nösberger	32
11	Does nitrogen nutrition restrict the CO 2 response of fertile grassland lacking legumes? 1997 ·Oecologia ·S. Zanetti,Ueli A. Hartwig,Chris van Kessel,A. Lüscher,Thomas Hebeisen,Marco Frehner,Bernt Fischer,George R. Hendrey,Hermann Blum,J. Nösberger	120
12	Using stable isotopes to determine soil carbon input differences under ambient and elevated atmospheric CO₂ conditions 1997 ·Global Change Biology ·(unknown),A. Lüscher,Ueli A. Hartwig,Chris van Kessel	47
13	Symbiotic N2 fixation increases under elevated atmospheric pCO2 in the field 1997 ·Acta Oecologica ·S. Zanetti,Ueli A. Hartwig	29
14	Growth and Symbiotic Nitrogen Fixation ofVicia fabaandPhaseolus vulgaris as Affected by Fertiliser Potassium and Temperature 1996 ·Journal of the Science of Food and Agriculture ·(unknown),Ueli A. Hartwig,J. Nösberger	11
15	Whole-Nodule Carbon Metabolites Are Not Involved in the Regulation of the Oxygen Permeability and Nitrogenase Activity in White Clover Nodules 1996 ·PLANT PHYSIOLOGY ·(unknown),Ueli A. Hartwig,(unknown),J. Nösberger	15
16	What triggers the regulation of nitrogenase activity in forage legume nodules after defoliation? 1994 ·Plant and Soil ·Ueli A. Hartwig,J. Nösberger	21
17	Current Nitrogen Fixation Is Involved in the Regulation of Nitrogenase Activity in White Clover (Trifolium repens L.) 1993 ·PLANT PHYSIOLOGY ·(unknown),Ueli A. Hartwig,J. Nösberger	34
18	Flavonoids Released Naturally from Alfalfa Seeds Enhance Growth Rate of Rhizobium meliloti 1991 ·PLANT PHYSIOLOGY ·Ueli A. Hartwig,Cecillia M. Joseph,Donald A. Phillips	165
19	Release and Modification of nod-Gene-Inducing Flavonoids from Alfalfa Seeds 1991 ·PLANT PHYSIOLOGY ·Ueli A. Hartwig,Donald A. Phillips	59
20	Interactions among Flavonoid nod Gene Inducers Released from Alfalfa Seeds and Roots 1989 ·PLANT PHYSIOLOGY ·Ueli A. Hartwig,Carl A. Maxwell,Cecillia M. Joseph,Donald A. Phillips	41

About Ueli A. Hartwig

Ueli A. Hartwig is a scholar working on Soil Science, Agronomy and Crop Science and Plant Science, having authored 59 papers that have together received 4.6k indexed citations. Recurring topics across this work include Legume Nitrogen Fixing Symbiosis (31 papers), Plant responses to elevated CO2 (28 papers) and Soil Carbon and Nitrogen Dynamics (27 papers). The work is most often cited by research in Soil Science (1.9k citations), Plant Science (3.4k citations) and Agronomy and Crop Science (729 citations). Ueli A. Hartwig has collaborated with scholars based in Switzerland, United States and Hungary. Frequent co-authors include J. Nösberger, A. Lüscher, Donald A. Phillips, Cecillia M. Joseph, Marco Frehner, Carl A. Maxwell, George R. Hendrey, S. Zanetti, Chris van Kessel and Diane E. Pataki. Their work appears in journals such as PLANT PHYSIOLOGY, Journal of Bacteriology and New Phytologist.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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