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
976,237
Country Rank
8,992
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/901.png)
![Nigeria](/flags/ng.png)
![Osondu Akoma](/pictures/77/4309630.jpg)
Limnology
Algology
Hydrobiology and Aquatic Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 Index Rankings
World Rank
1,054,138
Country Rank
10,724
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/901.png)
![Nigeria](/flags/ng.png)
![Frances N. Olisaka](/pictures/14/4750428.jpg)
MICROBIAL ECOLOGY
ENVIRONMENTAL AND PUBLIC HEALTH
BIOFILM
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
6
0.857
* Total i10 Index Rankings
World Ranking
976,237
Country Ranking
8,992
Institution Ranking
13
Osondu Akoma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
![](https://cdn.adscientificindex.com/logos/901.png)
Limnology
Algology
Hydrobiology and Aquatic Ecology
* Total i10 Index Rankings
World Ranking
1,054,138
Country Ranking
10,724
Institution Ranking
16
Frances N. Olisaka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
6
0.857
![](https://cdn.adscientificindex.com/logos/901.png)
MICROBIAL ECOLOGY
ENVIRONMENTAL AND PUBLIC HEALTH
BIOFILM