World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
54
Citations
11550
World Ranking
1683
National Ranking
36

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Ecosystem
  • Botany

His primary scientific interests are in Ecosystem, Ecology, Botany, Biodiversity and Terrestrial plant. Ansgar Kahmen has researched Ecosystem in several fields, including Biogeochemical cycle, Atmospheric sciences, Agronomy and Wax. While the research belongs to areas of Agronomy, Ansgar Kahmen spends his time largely on the problem of Nitrogen cycle, intersecting his research to questions surrounding Isotopes of nitrogen, Cycling and Nutrient.

He combines topics linked to Isotopic composition with his work on Ecology. His studies in Botany integrate themes in fields like Soil classification and δ18O. Ansgar Kahmen interconnects Ecological niche and Grassland in the investigation of issues within Biodiversity.

His most cited work include:

  • Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability (572 citations)
  • Molecular Paleohydrology: Interpreting the Hydrogen-Isotopic Composition of Lipid Biomarkers from Photosynthesizing Organisms (531 citations)
  • Resource Heterogeneity Moderates the Biodiversity-Function Relationship in Real World Ecosystems (190 citations)

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

Ansgar Kahmen mostly deals with Agronomy, Ecology, Botany, Ecosystem and Growing season. His work deals with themes such as Stomatal conductance, Nutrient, Temperate climate and Water content, which intersect with Agronomy. Biodiversity, Climate change, Biomass, Grassland and Plant community are subfields of Ecology in which his conducts study.

His Biomass research is multidisciplinary, relying on both Species richness and Species diversity. His work carried out in the field of Ecosystem brings together such families of science as Soil water, Atmospheric sciences and Wax. His Atmospheric sciences course of study focuses on Hydrology and Ecohydrology, Transect and Arid.

He most often published in these fields:

  • Agronomy (27.56%)
  • Ecology (21.26%)
  • Botany (22.83%)

What were the highlights of his more recent work (between 2018-2021)?

  • Agronomy (27.56%)
  • Growing season (13.39%)
  • Water content (7.09%)

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

His primary areas of investigation include Agronomy, Growing season, Water content, Temperate climate and Drought stress. His studies deal with areas such as Soil water, Soil horizon and Stomatal conductance as well as Agronomy. He combines subjects such as Temperate rainforest, Climate change, Phenology, Alpine plant and Snowmelt with his study of Growing season.

His work in the fields of Temperate forest overlaps with other areas such as Economic shortage and Embolism. His study explores the link between Topsoil and topics such as Old-growth forest that cross with problems in Ecosystem. Ansgar Kahmen usually deals with Ecosystem and limits it to topics linked to Habitat and Competition.

Between 2018 and 2021, his most popular works were:

  • A first assessment of the impact of the extreme 2018 summer drought on Central European forests (72 citations)
  • Species-specific differences in water uptake depth of mature temperate trees vary with water availability in the soil. (30 citations)
  • No role for xylem embolism or carbohydrate shortage in temperate trees during the severe 2015 drought (20 citations)

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

  • Ecology
  • Ecosystem
  • Botany

His scientific interests lie mostly in Agronomy, Soil water, Temperate climate, Water content and Carbohydrate. His research integrates issues of Sink and Stomatal conductance in his study of Agronomy. His study in Carbohydrate is interdisciplinary in nature, drawing from both Environmental chemistry and Botany.

His primary area of study in Botany is in the field of Xylem. The study incorporates disciplines such as Old-growth forest, Fagus sylvatica, Soil classification, Scots pine and Ecosystem in addition to Topsoil. His Drought stress research incorporates themes from Ecology, Climate change, Growing season and Temperate rainforest.

Best Publications

  • Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability

    Joseph M. Craine;Andrew J. Elmore;Marcos P. M. Aidar;Mercedes Bustamante

  • A first assessment of the impact of the extreme 2018 summer drought on Central European forests

    Bernhard Schuldt;Allan Buras;Matthias Arend;Yann Vitasse

  • Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit

    Unknown

  • Stable isotopes in leaf water of terrestrial plants.

    Lucas A. Cernusak;Margaret M. Barbour;Stefan K. Arndt;Alexander W. Cheesman

  • Resource Heterogeneity Moderates the Biodiversity-Function Relationship in Real World Ecosystems

    Jason M Tylianakis;Jason M Tylianakis;Tatyana A Rand;Tatyana A Rand;Ansgar Kahmen;Alexandra-Maria Klein;Alexandra-Maria Klein

  • NICHE COMPLEMENTARITY FOR NITROGEN: AN EXPLANATION FOR THE BIODIVERSITY AND ECOSYSTEM FUNCTIONING RELATIONSHIP?

    Ansgar Kahmen;Carsten Renker;Sybille B. Unsicker;Nina Buchmann

  • Diversity-dependent productivity in semi-natural grasslands following climate perturbations

    A. Kahmen;J. Perner;N. Buchmann

  • Leaf water deuterium enrichment shapes leaf wax n-alkane δD values of angiosperm plants I: Experimental evidence and mechanistic insights

    Ansgar Kahmen;Enno Schefuß;Dirk Sachse

  • Leaf water deuterium enrichment shapes leaf wax n-alkane δD values of angiosperm plants II: Observational evidence and global implications

    Ansgar Kahmen;Ansgar Kahmen;Bernd Hoffmann;Enno Schefuß;Stefan K. Arndt

  • Foliar δ15N values characterize soil N cycling and reflect nitrate or ammonium preference of plants along a temperate grassland gradient

    Ansgar Kahmen;Wolfgang Wanek;Nina Buchmann

  • Species-specific differences in water uptake depth of mature temperate trees vary with water availability in the soil.

    Nadine Brinkmann;Nadine Brinkmann;Werner Eugster;Nina Buchmann;Ansgar Kahmen

  • Employing stable isotopes to determine the residence times of soil water and the temporal origin of water taken up by Fagus sylvatica and Picea abies in a temperate forest

    Nadine Brinkmann;Nadine Brinkmann;Stefan Seeger;Markus Weiler;Nina Buchmann

  • Cellulose δ18O is an index of leaf-to-air vapor pressure difference (VPD) in tropical plants

    Ansgar Kahmen;Dirk Sachse;Stefan K. Arndt;Kevin P. Tu

  • Convergence of soil nitrogen isotopes across global climate gradients

    Joseph M. Craine;Andrew J. Elmore;Lixin Wang;Laurent Augusto

  • Number of growth days and not length of the growth period determines radial stem growth of temperate trees

    Unknown

  • Significant seasonal variation in the hydrogen isotopic composition of leaf-wax lipids for two deciduous tree ecosystems (Fagus sylvativa and Acer pseudoplatanus)

    Dirk Sachse;Ansgar Kahmen;Gerd Gleixner

  • Rapid hydraulic collapse as cause of drought-induced mortality in conifers.

    Matthias Arend;Roman M. Link;Rachel Patthey;Günter Hoch

  • Effects of plant diversity, community composition and environmental parameters on productivity in montane European grasslands.

    Ansgar Kahmen;Jörg Perner;Volker Audorff;Wolfgang W. Weisser

  • Effects of plant diversity, plant productivity and habitat parameters on arthropod abundance in montane European grasslands

    Jörg Perner;Carla Wytrykush;Ansgar Kahmen;Nina Buchmann

  • Abundance and distribution of leaf wax n-alkanes in leaves of Acacia and Eucalyptus trees along a strong humidity gradient in northern Australia

    Bernd Hoffmann;Ansgar Kahmen;Lucas A. Cernusak;Stefan K. Arndt

  • Leaf wax n-alkane δD values of field-grown barley reflect leaf water δD values at the time of leaf formation

    Dirk Sachse;Gerd Gleixner;Heinz Wilkes;Ansgar Kahmen;Ansgar Kahmen

  • Species composition of arbuscular mycorrhizal fungi in two mountain meadows with differing management types and levels of plant biodiversity

    Boris Börstler;Carsten Renker;Ansgar Kahmen;François Buscot

  • Effects of environmental parameters, leaf physiological properties and leaf water relations on leaf water δ18O enrichment in different Eucalyptus species

    Ansgar Kahmen;Kevin Simonin;Kevin P. Tu;Andrew Merchant

Frequent Co-Authors

Dirk Sachse
Dirk Sachse University of Potsdam
Nina Buchmann
Nina Buchmann ETH Zurich
Stefan K. Arndt
Stefan K. Arndt University of Melbourne
Günter Hoch
Günter Hoch University of Basel
Todd E. Dawson
Todd E. Dawson University of California, Berkeley
Arthur Gessler
Arthur Gessler ETH Zurich
Thomas Boller
Thomas Boller University of Basel
Rolf T. W. Siegwolf
Rolf T. W. Siegwolf Paul Scherrer Institute
Lucas A. Cernusak
Lucas A. Cernusak James Cook University

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