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
186,978
Country Rank
63
Institution Rank : 10
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Gayan Bowatte](https://cdn.adscientificindex.com/pictures/e1/353105.jpg)
Air pollution
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,367
4,343
0.809
* Total Citation Counts Rankings
World Rank
199,013
Country Rank
70
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Avanthi Deshani Igalavithana](https://cdn.adscientificindex.com/pictures/a0/353107.jpg)
Environmental Soil Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,031
4,853
0.965
* Total Citation Counts Rankings
World Rank
638,385
Country Rank
414
Institution Rank : 88
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Nadeeshani Nanayakkara](https://cdn.adscientificindex.com/pictures/e7/402280.jpg)
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,089
793
0.728
* Total Citation Counts Rankings
World Rank
716,808
Country Rank
524
Institution Rank : 111
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Ndk Dayawansa](https://cdn.adscientificindex.com/pictures/25/5725576.jpg)
Water Resources Management
Remote Sensing
GIS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
876
616
0.703
* Total Citation Counts Rankings
World Rank
788,507
Country Rank
632
Institution Rank : 130
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Gemunu Herath](/user/assets/images/profile/no-profile-photo.png)
Water and Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
715
438
0.613
* Total Citation Counts Rankings
World Rank
808,267
Country Rank
661
Institution Rank : 136
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![SB Weerakoon](https://cdn.adscientificindex.com/pictures/05/407184.jpg)
Water Resources
Flow computation
Climate Variability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
675
348
0.516
* Total Citation Counts Rankings
World Rank
1,192,444
Country Rank
1,521
Institution Rank : 244
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Mack Hansima](https://cdn.adscientificindex.com/pictures/0f/4752118.jpg)
Electrodialysis reversal water treatment
Humic substances
Membrane fouling
Environmental
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
187
187
1.000
* Total Citation Counts Rankings
World Rank
2,103,924
Country Rank
4,671
Institution Rank : 527
![](https://cdn.adscientificindex.com/logos/11281.jpg)
![Sri Lanka](/flags/lk.png)
![Cs Hettiarachchi](/pictures/40/5099390.jpg)
Biogeography
Environmental Sciences
Botany
Microbiology
Rhizobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
186,978
![Sri Lanka](/flags/lk.png)
63
![](https://cdn.adscientificindex.com/logos/11281.jpg)
10
Gayan Bowatte
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,367
4,343
0.809
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Air pollution
Epidemiology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
199,013
![Sri Lanka](/flags/lk.png)
70
![](https://cdn.adscientificindex.com/logos/11281.jpg)
13
Avanthi Deshani Igalavithana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,031
4,853
0.965
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Environmental Soil Science
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
638,385
![Sri Lanka](/flags/lk.png)
414
![](https://cdn.adscientificindex.com/logos/11281.jpg)
88
Nadeeshani Nanayakkara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,089
793
0.728
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Environmental Engineering
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
716,808
![Sri Lanka](/flags/lk.png)
524
![](https://cdn.adscientificindex.com/logos/11281.jpg)
111
Ndk Dayawansa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
876
616
0.703
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Water Resources Management
Remote Sensing
GIS
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
788,507
![Sri Lanka](/flags/lk.png)
632
![](https://cdn.adscientificindex.com/logos/11281.jpg)
130
Gemunu Herath
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
715
438
0.613
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Water and Environment
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
808,267
![Sri Lanka](/flags/lk.png)
661
![](https://cdn.adscientificindex.com/logos/11281.jpg)
136
SB Weerakoon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
675
348
0.516
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Water Resources
Flow computation
Climate Variability
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,192,444
![Sri Lanka](/flags/lk.png)
1,521
![](https://cdn.adscientificindex.com/logos/11281.jpg)
244
Mack Hansima
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
187
187
1.000
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Electrodialysis reversal water treatment
Humic substances
Membrane fouling
Environmental
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
2,103,924
![Sri Lanka](/flags/lk.png)
4,671
![](https://cdn.adscientificindex.com/logos/11281.jpg)
527
Cs Hettiarachchi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
4
0.800
![](https://cdn.adscientificindex.com/logos/11281.jpg)
Biogeography
Environmental Sciences
Botany
Microbiology
Rhizobiology