Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
85,930
Country Rank
66
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/28726.png)
![Nigeria](/flags/ng.png)
![James Legg](https://cdn.adscientificindex.com/pictures/4f/4397332.jpg)
Cassava Viruses
Whiteflies
Epidemiology
Molecular Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
90
0.769
* Total i10 Index Rankings
World Rank
212,719
Country Rank
296
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/28726.png)
![Nigeria](/flags/ng.png)
![Chiedozie Egesi](https://cdn.adscientificindex.com/pictures/c8/4392900.jpg)
breeding
genetics
biotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
53
0.855
* Total i10 Index Rankings
World Rank
1,038,911
Country Rank
10,434
Institution Rank : 39
![](https://cdn.adscientificindex.com/logos/28726.png)
![Nigeria](/flags/ng.png)
![Kyle M. Dittmer](/pictures/95/4649536.jpg)
biogeochemistry
ecosystem ecology
agroecology
climate change
low emissions development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 Index Rankings
World Rank
1,368,943
Country Rank
19,117
Institution Rank : 55
![](https://cdn.adscientificindex.com/logos/28726.png)
![Nigeria](/flags/ng.png)
![Njoki Kahiu](/pictures/50/4649936.jpg)
Terrestrial/Drylands/Savanna Ecology
Geospatial Analysis
Disaster Risk Financing (index-based
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total i10 Index Rankings
World Rank
1,551,225
Country Rank
24,008
Institution Rank : 64
![](https://cdn.adscientificindex.com/logos/28726.png)
![Nigeria](/flags/ng.png)
![Shaheed Nasrullah](/user/assets/images/profile/no-profile-photo.png)
Marine biodiversity research
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total i10 Index Rankings
World Ranking
85,930
Country Ranking
66
Institution Ranking
5
James Legg
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
90
0.769
![](https://cdn.adscientificindex.com/logos/28726.png)
Cassava Viruses
Whiteflies
Epidemiology
Molecular Ecology
* Total i10 Index Rankings
World Ranking
212,719
Country Ranking
296
Institution Ranking
9
Chiedozie Egesi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
53
0.855
* Total i10 Index Rankings
World Ranking
1,038,911
Country Ranking
10,434
Institution Ranking
39
Kyle M. Dittmer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
![](https://cdn.adscientificindex.com/logos/28726.png)
biogeochemistry
ecosystem ecology
agroecology
climate change
low emissions development
* Total i10 Index Rankings
World Ranking
1,368,943
Country Ranking
19,117
Institution Ranking
55
Njoki Kahiu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
![](https://cdn.adscientificindex.com/logos/28726.png)
Terrestrial/Drylands/Savanna Ecology
Geospatial Analysis
Disaster Risk Financing (index-based
* Total i10 Index Rankings
World Ranking
1,551,225
Country Ranking
24,008
Institution Ranking
64
Shaheed Nasrullah
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000