Citation Rankings
Highly Cited Researchers
University of Maryland Center for Environmental Science Highly Cited Researchers Citation Rankings 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.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,269
27,725
0.373
* Total Citation Counts Rankings
Ranking Based On Selection :2
eutrophication
nitrogen cycling
algal blooms
harmful algae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,523
14,020
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :3
marine ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,873
11,755
0.347
* Total Citation Counts Rankings
Ranking Based On Selection :4
Interdisciplinary Science
Land Cover/Use Change
Climate Change
Conservation Biology
Landscape Dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,942
12,006
0.463
* Total Citation Counts Rankings
Ranking Based On Selection :5
fisheries science
fish ecology
oceanography
marine science
fisheries management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,430
5,960
0.244
* Total Citation Counts Rankings
Ranking Based On Selection :6
Ecoogical Network Analysis
Science and Religion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,835
5,274
0.242
* Total Citation Counts Rankings
Ranking Based On Selection :7
coastal oceanography
ecosystem rehabilitation
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,088
5,969
0.297
* Total Citation Counts Rankings
Ranking Based On Selection :8
Protists in planktonic food webs
microzooplankton
Mixotrophy
algal blooms
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,336
6,007
0.311
* Total Citation Counts Rankings
Ranking Based On Selection :9
Benthic ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,107
7,595
0.397
* Total Citation Counts Rankings
Ranking Based On Selection :10
fish
model
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,702
7,504
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :11
Fish Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,410
5,477
0.315
* Total Citation Counts Rankings
Ranking Based On Selection :12
Marine biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,245
5,363
0.376
* Total Citation Counts Rankings
Ranking Based On Selection :13
Biological oceanography
zooplankton ecology
hypoxia effects on pelagic food webs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,767
4,697
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :14
Molecular Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,068
3,768
0.288
* Total Citation Counts Rankings
Ranking Based On Selection :15
photosynthesis
denitrification
phytoplankton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,702
3,580
0.306
* Total Citation Counts Rankings
Ranking Based On Selection :16
oceanography
biogeochemistry
sediment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,402
3,873
0.340
* Total Citation Counts Rankings
Ranking Based On Selection :17
Marine microbiology
Marine Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,352
3,522
0.310
* Total Citation Counts Rankings
Ranking Based On Selection :18
biogeochemistry
watershed hydrology
watershed ecology
estuarine ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,752
2,572
0.239
* Total Citation Counts Rankings
Ranking Based On Selection :19
Marine Microbial Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,569
4,981
0.471
* Total Citation Counts Rankings
Ranking Based On Selection :20
species distribution modelling
global change
biodiversity
macroecology
biogeography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,401
6,415
0.617
* Total Citation Counts Rankings
Ranking Based On Selection :21
Ecology
Animal Movements
Marine Mammals
Sea Turtles
Habitat Use
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,138
4,726
0.581
* Total Citation Counts Rankings
Ranking Based On Selection :22
recruitment
fishery management
crab fisheries
stock assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,783
2,087
0.268
* Total Citation Counts Rankings
Ranking Based On Selection :23
Behavioral Ecology
Prairie Dog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,650
1,057
0.138
* Total Citation Counts Rankings
Ranking Based On Selection :24
biological oceanography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,506
3,244
0.432
* Total Citation Counts Rankings
Ranking Based On Selection :25
Environmental science and policy
food security and climate change
atmospheric science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,395
6,561
0.887
* Total Citation Counts Rankings
Rankings
5,333
2,516
1
Ranking Based On Selection: 1
Eric A Davidson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,269
27,725
0.373
* Total Citation Counts Rankings
Rankings
18,108
8,458
2
Ranking Based On Selection: 2
Patricia Glibert
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,523
14,020
0.406
eutrophication
nitrogen cycling
algal blooms
harmful algae
* Total Citation Counts Rankings
Rankings
18,614
8,681
3
Ranking Based On Selection: 3
William C Dennison
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,873
11,755
0.347
* Total Citation Counts Rankings
Rankings
28,095
12,784
4
Ranking Based On Selection: 4
Mark A Cochrane
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,942
12,006
0.463
Interdisciplinary Science
Land Cover/Use Change
Climate Change
Conservation Biology
Landscape Dynamics
* Total Citation Counts Rankings
Rankings
30,747
13,918
5
Ranking Based On Selection: 5
Edward D Houde
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,430
5,960
0.244
fisheries science
fish ecology
oceanography
marine science
fisheries management
* Total Citation Counts Rankings
Rankings
36,059
16,090
6
Ranking Based On Selection: 6
Robert Ulanowicz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,835
5,274
0.242
Ecoogical Network Analysis
Science and Religion
* Total Citation Counts Rankings
Rankings
40,598
17,904
7
Ranking Based On Selection: 7
Donald Boesch
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,088
5,969
0.297
coastal oceanography
ecosystem rehabilitation
climate change
* Total Citation Counts Rankings
Rankings
42,710
18,747
8
Ranking Based On Selection: 8
Diane Stoecker
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,336
6,007
0.311
Protists in planktonic food webs
microzooplankton
Mixotrophy
algal blooms
* Total Citation Counts Rankings
Rankings
43,356
18,991
9
Ranking Based On Selection: 9
Jacqueline M Grebmeier
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,107
7,595
0.397
* Total Citation Counts Rankings
Rankings
44,653
19,479
10
Ranking Based On Selection: 10
Kenneth A Rose
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,702
7,504
0.401
* Total Citation Counts Rankings
Rankings
49,325
21,321
11
Ranking Based On Selection: 11
David Secor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,410
5,477
0.315
* Total Citation Counts Rankings
Rankings
64,350
27,033
12
Ranking Based On Selection: 12
Lee W Cooper
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,245
5,363
0.376
Marine biogeochemistry
* Total Citation Counts Rankings
Rankings
67,312
28,155
13
Ranking Based On Selection: 13
Michael Roman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,767
4,697
0.341
Biological oceanography
zooplankton ecology
hypoxia effects on pelagic food webs
* Total Citation Counts Rankings
Rankings
71,945
29,796
14
Ranking Based On Selection: 14
Allen R Place
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,068
3,768
0.288
* Total Citation Counts Rankings
Rankings
82,302
33,544
15
Ranking Based On Selection: 15
Todd Kana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,702
3,580
0.306
* Total Citation Counts Rankings
Rankings
84,949
34,509
16
Ranking Based On Selection: 16
Jeffrey Cornwell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,402
3,873
0.340
oceanography
biogeochemistry
sediment
* Total Citation Counts Rankings
Rankings
85,426
34,675
17
Ranking Based On Selection: 17
Russell Hill
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,352
3,522
0.310
Marine microbiology
Marine Biotechnology
* Total Citation Counts Rankings
Rankings
91,159
36,680
18
Ranking Based On Selection: 18
Thomas R Fisher
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,752
2,572
0.239
biogeochemistry
watershed hydrology
watershed ecology
estuarine ecology
* Total Citation Counts Rankings
Rankings
93,042
37,333
19
Ranking Based On Selection: 19
Feng Chen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,569
4,981
0.471
Marine Microbial Ecology
* Total Citation Counts Rankings
Rankings
94,735
37,908
20
Ranking Based On Selection: 20
Matthew C Fitzpatrick
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,401
6,415
0.617
species distribution modelling
global change
biodiversity
macroecology
biogeography
* Total Citation Counts Rankings
Rankings
125,084
48,244
21
Ranking Based On Selection: 21
Helen Bailey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,138
4,726
0.581
Ecology
Animal Movements
Marine Mammals
Sea Turtles
Habitat Use
* Total Citation Counts Rankings
Rankings
131,426
50,346
22
Ranking Based On Selection: 22
Thomas Miller
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,783
2,087
0.268
recruitment
fishery management
crab fisheries
stock assessment
* Total Citation Counts Rankings
Rankings
133,948
51,163
23
Ranking Based On Selection: 23
John Hoogland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,650
1,057
0.138
* Total Citation Counts Rankings
Rankings
136,669
52,026
24
Ranking Based On Selection: 24
Raleigh Hood
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,506
3,244
0.432
* Total Citation Counts Rankings
Rankings
138,902
52,735
25
Ranking Based On Selection: 25
Xin Zhang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,395
6,561
0.887
Environmental science and policy
food security and climate change
atmospheric science