2026 Thorsten E. E. Grams: Plant Science and Agronomy Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Plant Science and Agronomy	43	3211	2991	199	176	125	7314

Overview

What is he best known for?

The fields of study he is best known for:

Ecology
Botany
Photosynthesis

The scientist’s investigation covers issues in Botany, Beech, Photosynthesis, Stomatal conductance and Fagus sylvatica. His Botany research incorporates elements of Biomass and Isotope analysis. Ecology covers he research in Beech.

His primary area of study in Photosynthesis is in the field of Chlorophyll fluorescence. His study in Stomatal conductance is interdisciplinary in nature, drawing from both Soil water and Horticulture. The various areas that Thorsten E. E. Grams examines in his Fagus sylvatica study include Canopy and Fagaceae.

His most cited work include:

Research frontiers for improving our understanding of drought-induced tree and forest mortality. (137 citations)
Enhanced ozone strongly reduces carbon sink strength of adult beech (Fagus sylvatica) – Resume from the free-air fumigation study at Kranzberg Forest (123 citations)
Characteristics of Electrical Signals in Poplar and Responses in Photosynthesis (121 citations)

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

Thorsten E. E. Grams mainly investigates Botany, Beech, Fagus sylvatica, Picea abies and Photosynthesis. His research investigates the link between Botany and topics such as δ13C that cross with problems in Isotopes of carbon. Thorsten E. E. Grams has included themes like Competition, Juvenile and Agronomy, Growing season in his Beech study.

His Fagus sylvatica study combines topics in areas such as Canopy, Phytotron, Horticulture, Fagaceae and Deciduous. Thorsten E. E. Grams works mostly in the field of Picea abies, limiting it down to topics relating to Hydraulic redistribution and, in certain cases, Xylem and Temperate climate, as a part of the same area of interest. The various areas that he examines in his Photosynthesis study include Biophysics and Crassulaceae.

He most often published in these fields:

Botany (52.21%)
Beech (46.02%)
Fagus sylvatica (38.94%)

What were the highlights of his more recent work (between 2017-2021)?

Beech (46.02%)
Hydraulic redistribution (7.08%)
Agronomy (19.47%)

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

Beech, Hydraulic redistribution, Agronomy, Temperate climate and Amazon rainforest are his primary areas of study. His Beech research is classified as research in Forestry. His studies deal with areas such as Environmental engineering and Root system as well as Hydraulic redistribution.

He has included themes like Hydraulic conductivity, Picea abies, Hydrology and Xylem in his Temperate climate study. His biological study spans a wide range of topics, including Photosynthesis, Osmolyte, Turgor pressure and Phloem, Phloem transport. Many of his studies involve connections with topics such as Fagus sylvatica and Competition.

Between 2017 and 2021, his most popular works were:

Research frontiers for improving our understanding of drought-induced tree and forest mortality. (137 citations)
A first assessment of the impact of the extreme 2018 summer drought on Central European forests (72 citations)
Repeated summer drought delays sugar export from the leaf and impairs phloem transport in mature beech. (16 citations)

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

Ecology
Botany
Photosynthesis

His primary areas of study are Beech, Fagus sylvatica, Throughfall, Climate change and Picea abies. His study on Beech is mostly dedicated to connecting different topics, such as Tree species. His Fagus sylvatica study frequently draws connections between adjacent fields such as Horticulture.

His Horticulture study incorporates themes from Photosynthesis, Phloem and Osmolyte. His Throughfall research is multidisciplinary, incorporating perspectives in Agronomy, Resistance, Mixed species, Plant physiology and Acclimatization. Forest ecology is closely connected to Monoculture in his research, which is encompassed under the umbrella topic of Picea abies.

Best Publications

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

Bernhard Schuldt;Allan Buras;Matthias Arend;Yann Vitasse

956
Citations
Research frontiers for improving our understanding of drought-induced tree and forest mortality.

Henrik Hartmann;Catarina F. Moura;Catarina F. Moura;Catarina F. Moura;William R. L. Anderegg;Nadine K. Ruehr

511
Citations
Characteristics of Electrical Signals in Poplar and Responses in Photosynthesis

Silke Lautner;Thorsten Erhard Edgar Grams;Rainer Matyssek;Jörg Fromm

222
Citations
Progress and challenges in using stable isotopes to trace plant carbon and water relations across scales

Christiane Werner;Hans Schnyder;Matthias Cuntz;C. Keitel

202
Citations
Enhanced ozone strongly reduces carbon sink strength of adult beech (Fagus sylvatica) – Resume from the free-air fumigation study at Kranzberg Forest

R. Matyssek;G. Wieser;R. Ceulemans;H. Rennenberg

179
Citations
Combining δ13C and δ18O analyses to unravel competition, CO2 and O3 effects on the physiological performance of different‐aged trees

Thorsten E. E. Grams;Thorsten E. E. Grams;Alessandra Rodrigues Kozovits;Karl Heinz Häberle;Rainer Matyssek

169
Citations
Transient knockout of photosynthesis mediated by electrical signals.

Christiane Koziolek;Thorsten E. E. Grams;Ulrich Schreiber;Rainer Matyssek

169
Citations
Heat-induced electrical signals affect cytoplasmic and apoplastic pH as well as photosynthesis during propagation through the maize leaf.

Thorsten E. E. Grams;Silke Lautner;Hubert H. Felle;Rainer Matyssek

164
Citations
Mixed Norway spruce (Picea abies [L.] Karst) and European beech (Fagus sylvatica [L.]) stands under drought: from reaction pattern to mechanism

H. Pretzsch;T. Rötzer;R. Matyssek;T. E. E. Grams

162
Citations
Mitigation of drought by thinning: Short-term and long-term effects on growth and physiological performance of Norway spruce (Picea abies)

Julia A. Sohn;Timo Gebhardt;Timo Gebhardt;Christian Ammer;Jürgen Bauhus

156
Citations
Distinct roles of electric and hydraulic signals on the reaction of leaf gas exchange upon re-irrigation in Zea mays L.

Thorsten E. E. Grams;Christiane Koziolek;Silke Lautner;Rainer Matyssek

147
Citations
Comparison between AOT40 and ozone uptake in forest trees of different species, age and site conditions

R. Matyssek;G. Wieser;A.J. Nunn;A.R. Kozovits

145
Citations
Competition increasingly dominates the responsiveness of juvenile beech and spruce to elevated CO2 and/or O3 concentrations throughout two subsequent growing seasons

Alessandra R. Kozovits;Rainer Matyssek;Helmut Blaschke;Axel Göttlein

145
Citations
Seasonal patterns of carbon allocation to respiratory pools in 60-yr-old deciduous (Fagus sylvatica) and evergreen (Picea abies) trees assessed via whole-tree stable carbon isotope labeling

Daniel Kuptz;Frank Fleischmann;Rainer Matyssek;Thorsten E. E. Grams

145
Citations
Effects of chronic elevated ozone exposure on gas exchange responses of adult beech trees (Fagus sylvatica) as related to the within-canopy light gradient.

Mitsutoshi Kitao;Markus Löw;Christian Heerdt;Thorsten E.E. Grams

136
Citations
Comparison of ozone uptake and sensitivity between a phytotron study with young beech and a field experiment with adult beech (Fagus sylvatica).

Angela J. Nunn;A.R. Kozovits;I.M. Reiter;C. Heerdt

133
Citations
Advances in understanding ozone impact on forest trees: Messages from novel phytotron and free-air fumigation studies

R. Matyssek;D.F. Karnosky;G. Wieser;K. Percy

127
Citations
Interactions of chronic exposure to elevated CO2 and O3 levels in the photosynthetic light and dark reactions of European beech (Fagus sylvatica)

Thorsten E. E. Grams;Sabine Anegg;Karl-Heinz Häberle;Christian Langebartels

125
Citations
Growth and mortality of Norway spruce and European beech in monospecific and mixed-species stands under natural episodic and experimentally extended drought. Results of the KROOF throughfall exclusion experiment

H. Pretzsch;T. Grams;K. H. Häberle;K. Pritsch

124
Citations
Age effects on Norway spruce (Picea abies) susceptibility to ozone uptake: a novel approach relating stress avoidance to defense.

Gerhard Wieser;Karin Tegischer;Michael Tausz;Karl-Heinz Häberle

118
Citations
OakContigDF159.1, a reference library for studying differential gene expression in Quercus robur during controlled biotic interactions: use for quantitative transcriptomic profiling of oak roots in ectomycorrhizal symbiosis.

Mika T. Tarkka;Sylvie Herrmann;Tesfaye Wubet;Lasse Feldhahn;Lasse Feldhahn

115
Citations