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
41,975
Country Rank
18,592
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/11558.png)
![United States](/flags/us.png)
![Frank S Gilliam](https://cdn.adscientificindex.com/pictures/d1/1685657.jpg)
Plant Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,117
7,591
0.397
* Total Citation Counts Rankings
World Rank
217,050
Country Rank
77,267
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/11558.png)
![United States](/flags/us.png)
![Michael C Murrell](https://cdn.adscientificindex.com/pictures/96/1685664.jpg)
plankton ecology
estuarine processes
eutrophication
hypoxia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,595
1,858
0.404
* Total Citation Counts Rankings
World Rank
546,713
Country Rank
168,815
Institution Rank : 31
![](https://cdn.adscientificindex.com/logos/11558.png)
![United States](/flags/us.png)
![Zhiyong Hu](/user/assets/images/profile/no-profile-photo.png)
spatial analysis
GIS
remote sensing
environmental health/ecology.conservation/lLULCC
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,413
707
0.500
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
41,975
![United States](/flags/us.png)
18,592
![](https://cdn.adscientificindex.com/logos/11558.png)
1
Frank S Gilliam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,117
7,591
0.397
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
217,050
![United States](/flags/us.png)
77,267
![](https://cdn.adscientificindex.com/logos/11558.png)
9
Michael C Murrell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,595
1,858
0.404
![](https://cdn.adscientificindex.com/logos/11558.png)
plankton ecology
estuarine processes
eutrophication
hypoxia
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
546,713
![United States](/flags/us.png)
168,815
![](https://cdn.adscientificindex.com/logos/11558.png)
31
Zhiyong Hu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,413
707
0.500
![](https://cdn.adscientificindex.com/logos/11558.png)
spatial analysis
GIS
remote sensing
environmental health/ecology.conservation/lLULCC