Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
38,260
Country Rank
17,130
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Bryan W Brooks](https://cdn.adscientificindex.com/pictures/b8/832657.jpg)
water quality
env chemistry/toxicology
environmental health
harmful algal blooms
urbanization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,404
10,952
0.537
* Total Citation Counts Rankings
World Rank
200,576
Country Rank
72,443
Institution Rank : 37
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Susan P Bratton](/user/assets/images/profile/no-profile-photo.png)
Religion
ethics
conservation biology
ecology
environmental
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,980
1,147
0.230
* Total Citation Counts Rankings
World Rank
207,237
Country Rank
74,435
Institution Rank : 40
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Rebecca J Sheesley](https://cdn.adscientificindex.com/pictures/1c/832654.jpg)
atmospheric chemistry
carbonaceous aerosols
radiocarbon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,814
1,939
0.403
* Total Citation Counts Rankings
World Rank
216,620
Country Rank
77,208
Institution Rank : 45
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Cole W Matson](https://cdn.adscientificindex.com/pictures/53/832655.jpg)
Aquatic Toxicology
Environmental Genomics
Environmental Toxicology
Evolutionary Toxicology
Nanotoxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,594
1,973
0.429
* Total Citation Counts Rankings
World Rank
301,385
Country Rank
101,979
Institution Rank : 62
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Sascha Usenko](https://cdn.adscientificindex.com/pictures/3f/832656.jpg)
Analytical Chemistry
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,168
1,307
0.413
* Total Citation Counts Rankings
World Rank
392,518
Country Rank
127,443
Institution Rank : 85
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Ramon Lavado](https://cdn.adscientificindex.com/pictures/e2/832653.jpg)
Environmental Toxicology
Biomarkers
Biotransformation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,274
911
0.401
* Total Citation Counts Rankings
World Rank
457,528
Country Rank
145,155
Institution Rank : 101
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Jiaqi Liu](https://cdn.adscientificindex.com/pictures/bb/860789.jpg)
Environmental Chemistry
Toxicology
Water Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,842
1,417
0.769
* Total Citation Counts Rankings
World Rank
763,077
Country Rank
223,034
Institution Rank : 136
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Melinda Coogan](/pictures/c3/852857.jpg)
Aquatic Toxicology
Environmental Health
Toxicity and Human Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
768
235
0.306
* Total Citation Counts Rankings
World Rank
928,133
Country Rank
258,549
Institution Rank : 158
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Sifan A. Koriche](/pictures/57/4891606.jpg)
Climate Change
Hydroclimatoloy
Geospatial Science
Remote Sensing
Integrated Watershed Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
460
438
0.952
* Total Citation Counts Rankings
World Rank
1,015,001
Country Rank
274,679
Institution Rank : 179
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Kevin Stroski](/user/assets/images/profile/no-profile-photo.png)
Liquid Chromatography
Water Quality
Emerging Contaminants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
338
333
0.985
* Total Citation Counts Rankings
World Rank
1,238,892
Country Rank
308,925
Institution Rank : 258
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Cm Mansfield](/user/assets/images/profile/no-profile-photo.png)
Environmental Toxicology
Genotoxicology
Evolutionary Toxicology
Bioinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163
105
0.644
* Total Citation Counts Rankings
World Rank
1,355,337
Country Rank
326,198
Institution Rank : 284
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Jaylen L Sims](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115
115
1.000
* Total Citation Counts Rankings
World Rank
1,796,470
Country Rank
388,898
Institution Rank : 370
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Kayla P Garrett](/pictures/be/5185062.jpg)
sustainability
renewable energy
energy transitions
environmental mitigation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27
27
1.000
* Total Citation Counts Rankings
World Rank
1,968,927
Country Rank
410,344
Institution Rank : 416
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Ruichen Song](/user/assets/images/profile/no-profile-photo.png)
Urban air quality
air pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12
12
1.000
* Total Citation Counts Rankings
World Ranking
38,260
Country Ranking
17,130
Institution Ranking
12
Bryan W Brooks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,404
10,952
0.537
![](https://cdn.adscientificindex.com/logos/822.jpg)
water quality
env chemistry/toxicology
environmental health
harmful algal blooms
urbanization
* Total Citation Counts Rankings
World Ranking
200,576
Country Ranking
72,443
Institution Ranking
37
Susan P Bratton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,980
1,147
0.230
![](https://cdn.adscientificindex.com/logos/822.jpg)
Religion
ethics
conservation biology
ecology
environmental
* Total Citation Counts Rankings
World Ranking
207,237
Country Ranking
74,435
Institution Ranking
40
Rebecca J Sheesley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,814
1,939
0.403
![](https://cdn.adscientificindex.com/logos/822.jpg)
atmospheric chemistry
carbonaceous aerosols
radiocarbon
* Total Citation Counts Rankings
World Ranking
216,620
Country Ranking
77,208
Institution Ranking
45
Cole W Matson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,594
1,973
0.429
![](https://cdn.adscientificindex.com/logos/822.jpg)
Aquatic Toxicology
Environmental Genomics
Environmental Toxicology
Evolutionary Toxicology
Nanotoxicology
* Total Citation Counts Rankings
World Ranking
301,385
Country Ranking
101,979
Institution Ranking
62
Sascha Usenko
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,168
1,307
0.413
![](https://cdn.adscientificindex.com/logos/822.jpg)
Analytical Chemistry
Environmental Science
* Total Citation Counts Rankings
World Ranking
392,518
Country Ranking
127,443
Institution Ranking
85
Ramon Lavado
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,274
911
0.401
![](https://cdn.adscientificindex.com/logos/822.jpg)
Environmental Toxicology
Biomarkers
Biotransformation
* Total Citation Counts Rankings
World Ranking
457,528
Country Ranking
145,155
Institution Ranking
101
Jiaqi Liu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,842
1,417
0.769
![](https://cdn.adscientificindex.com/logos/822.jpg)
Environmental Chemistry
Toxicology
Water Treatment
* Total Citation Counts Rankings
World Ranking
763,077
Country Ranking
223,034
Institution Ranking
136
Melinda Coogan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
768
235
0.306
![](https://cdn.adscientificindex.com/logos/822.jpg)
Aquatic Toxicology
Environmental Health
Toxicity and Human Health
* Total Citation Counts Rankings
World Ranking
928,133
Country Ranking
258,549
Institution Ranking
158
Sifan A. Koriche
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
460
438
0.952
![](https://cdn.adscientificindex.com/logos/822.jpg)
Climate Change
Hydroclimatoloy
Geospatial Science
Remote Sensing
Integrated Watershed Management
* Total Citation Counts Rankings
World Ranking
1,015,001
Country Ranking
274,679
Institution Ranking
179
Kevin Stroski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
338
333
0.985
![](https://cdn.adscientificindex.com/logos/822.jpg)
Liquid Chromatography
Water Quality
Emerging Contaminants
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* Total Citation Counts Rankings
World Ranking
1,238,892
Country Ranking
308,925
Institution Ranking
258
Cm Mansfield
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163
105
0.644
![](https://cdn.adscientificindex.com/logos/822.jpg)
Environmental Toxicology
Genotoxicology
Evolutionary Toxicology
Bioinformatics
* Total Citation Counts Rankings
World Ranking
1,355,337
Country Ranking
326,198
Institution Ranking
284
Jaylen L Sims
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
115
115
1.000
* Total Citation Counts Rankings
World Ranking
1,796,470
Country Ranking
388,898
Institution Ranking
370
Kayla P Garrett
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27
27
1.000
![](https://cdn.adscientificindex.com/logos/822.jpg)
sustainability
renewable energy
energy transitions
environmental mitigation
* Total Citation Counts Rankings
World Ranking
1,968,927
Country Ranking
410,344
Institution Ranking
416
Ruichen Song
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12
12
1.000
![](https://cdn.adscientificindex.com/logos/822.jpg)
Urban air quality
air pollution