Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Microbiology
Microbial Ecology
Environmental Sciences
Taxonomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115,863
27,077
0.234
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,948
16,528
0.473
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
microbial physiology
methane
environmental microbiology
nitrogen cycle
anammox
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,619
12,965
0.573
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
marine microbial ecology
plankton
flow cytometry
in situ hybridization
phylogeny
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,295
8,868
0.381
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
microbial ecology
biogeochemistry
microbial physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,645
8,727
0.305
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Nutrient cycling
Isotope analytics
Marine biogeochemistry
Global change
Microbial processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,804
6,717
0.425
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,189
5,475
0.489
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,866
4,512
0.927
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Marine Biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,825
4,209
0.328
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
microbial ecology
microbial physiology
bioinformatics
(meta)genomics
nitrogen cycle
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,516
3,951
0.716
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Deep Sea Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,219
3,923
0.477
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Microbial hydrocarbon metabolism
marine microbiology and biochemistry
geochemistry
archaea
molecular ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,828
3,153
0.653
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
spatial metabolomics
symbiosis
host-microbe interactions
mass spectrometry imaging
marine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,122
2,923
0.571
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Microbial Diversity
Microbial Ecology
Deep Sea Ecology
Polar Biology
Microbial biogeography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,378
2,508
0.742
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Marine Biology
Symbiosis
Evolution
Ecophysiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,139
1,810
0.846
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
microbiology
greenhouse gases
biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,633
1,791
0.680
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
marine nitrogen cycle
biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,548
1,723
0.676
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Modelling
Biogeochemistry
Microbiology
Marine Aggregates
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,702
1,531
0.900
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Molecular Ecology
Microbiology
Marine Biology
Environmental Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,451
1,322
0.911
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Diversity
ecology
and evolution of marine chemosynthetic symbioses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,919
1,252
0.652
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Virology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,780
1,113
0.625
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Microbial Ecology
Nitrogen Cycling
Nitrification
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,291
1,081
0.837
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Microbial Ecology
Bioinformatics
Metagenomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,231
969
0.787
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Microbiology
Symbiosis
Marine Biology
Ecology
Imaging
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,215
906
0.746
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
methanotrophs
methane oxidation
denitrification
physiology
functional metagenomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
688
629
0.914
* Last 6 Years Citation Counts Rankings
Rankings
8,059
332
1
Ranking Based On Selection: 1
Rudolf Amann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115,863
27,077
0.234
Microbiology
Microbial Ecology
Environmental Sciences
Taxonomy
* Last 6 Years Citation Counts Rankings
Rankings
17,081
752
2
Ranking Based On Selection: 2
Marcel Kuypers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,948
16,528
0.473
* Last 6 Years Citation Counts Rankings
Rankings
24,655
1,094
3
Ranking Based On Selection: 3
Boran Kartal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,619
12,965
0.573
microbial physiology
methane
environmental microbiology
nitrogen cycle
anammox
* Last 6 Years Citation Counts Rankings
Rankings
43,393
1,899
4
Ranking Based On Selection: 4
Bernhard M Fuchs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,295
8,868
0.381
marine microbial ecology
plankton
flow cytometry
in situ hybridization
phylogeny
* Last 6 Years Citation Counts Rankings
Rankings
44,378
1,942
5
Ranking Based On Selection: 5
Dirk De Beer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,645
8,727
0.305
microbial ecology
biogeochemistry
microbial physiology
* Last 6 Years Citation Counts Rankings
Rankings
64,171
2,818
6
Ranking Based On Selection: 6
Gaute Lavik
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,804
6,717
0.425
Nutrient cycling
Isotope analytics
Marine biogeochemistry
Global change
Microbial processes
* Last 6 Years Citation Counts Rankings
Rankings
83,867
3,673
7
Ranking Based On Selection: 7
Nicole Dubilier
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,189
5,475
0.489
* Last 6 Years Citation Counts Rankings
Rankings
107,068
4,590
8
Ranking Based On Selection: 8
Hannah K Marchant
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,866
4,512
0.927
* Last 6 Years Citation Counts Rankings
Rankings
116,395
4,994
9
Ranking Based On Selection: 9
Timothy Ferdelman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,825
4,209
0.328
Marine Biogeochemistry
* Last 6 Years Citation Counts Rankings
Rankings
125,606
5,375
10
Ranking Based On Selection: 10
Daan R. Speth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,516
3,951
0.716
microbial ecology
microbial physiology
bioinformatics
(meta)genomics
nitrogen cycle
* Last 6 Years Citation Counts Rankings
Rankings
126,644
5,422
11
Ranking Based On Selection: 11
Frank Wenzhoefer|Frank Wenzhoefer, Frank Wenzhofer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,219
3,923
0.477
* Last 6 Years Citation Counts Rankings
Rankings
163,202
6,915
12
Ranking Based On Selection: 12
Gunter Wegener
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,828
3,153
0.653
Microbial hydrocarbon metabolism
marine microbiology and biochemistry
geochemistry
archaea
molecular ecology
* Last 6 Years Citation Counts Rankings
Rankings
177,454
7,441
13
Ranking Based On Selection: 13
Manuel Liebeke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,122
2,923
0.571
spatial metabolomics
symbiosis
host-microbe interactions
mass spectrometry imaging
marine
* Last 6 Years Citation Counts Rankings
Rankings
209,439
8,628
14
Ranking Based On Selection: 14
Christina Bienhold
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,378
2,508
0.742
Microbial Diversity
Microbial Ecology
Deep Sea Ecology
Polar Biology
Microbial biogeography
* Last 6 Years Citation Counts Rankings
Rankings
290,326
11,570
15
Ranking Based On Selection: 15
Harald Ronald Gruber-Vodicka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,139
1,810
0.846
Marine Biology
Symbiosis
Evolution
Ecophysiology
* Last 6 Years Citation Counts Rankings
Rankings
293,255
11,666
16
Ranking Based On Selection: 16
Jana Milucka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,633
1,791
0.680
microbiology
greenhouse gases
biogeochemistry
* Last 6 Years Citation Counts Rankings
Rankings
303,968
12,035
17
Ranking Based On Selection: 17
Wiebke Mohr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,548
1,723
0.676
marine nitrogen cycle
biogeochemistry
* Last 6 Years Citation Counts Rankings
Rankings
338,342
13,245
18
Ranking Based On Selection: 18
Soeren Ahmerkamp
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,702
1,531
0.900
Modelling
Biogeochemistry
Microbiology
Marine Aggregates
* Last 6 Years Citation Counts Rankings
Rankings
384,159
14,778
19
Ranking Based On Selection: 19
Greta Reintjes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,451
1,322
0.911
Molecular Ecology
Microbiology
Marine Biology
Environmental Sciences
* Last 6 Years Citation Counts Rankings
Rankings
401,579
15,353
20
Ranking Based On Selection: 20
Jillian M. Petersen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,919
1,252
0.652
Diversity
ecology
and evolution of marine chemosynthetic symbioses
* Last 6 Years Citation Counts Rankings
Rankings
440,851
16,620
21
Ranking Based On Selection: 21
Susanne Erdmann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,780
1,113
0.625
* Last 6 Years Citation Counts Rankings
Rankings
450,928
16,918
22
Ranking Based On Selection: 22
Katharina Kitzinger
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,291
1,081
0.837
Microbial Ecology
Nitrogen Cycling
Nitrification
* Last 6 Years Citation Counts Rankings
Rankings
488,733
18,189
23
Ranking Based On Selection: 23
Luis H. Orellana (Coto)|Coto Orellana, Luis Orellana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,231
969
0.787
Microbial Ecology
Bioinformatics
Metagenomics
* Last 6 Years Citation Counts Rankings
Rankings
512,766
18,927
24
Ranking Based On Selection: 24
Niko Leisch
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,215
906
0.746
Microbiology
Symbiosis
Marine Biology
Ecology
Imaging
* Last 6 Years Citation Counts Rankings
Rankings
644,959
23,139
25
Ranking Based On Selection: 25
Jon Graf
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
688
629
0.914
methanotrophs
methane oxidation
denitrification
physiology
functional metagenomics