Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Conservation Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,107
1,865
0.885
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Fish Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,968
1,196
0.608
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Forestry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,086
912
0.840
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
molecular characterisation of crops
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,067
875
0.820
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Nuclear Science and Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,285
605
0.471
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Agricultural Entomology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
875
364
0.416
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Fish/Food processing and quality assurance
Food processing & nutrient conservation
Food and culture
Food and nutrition securi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
607
360
0.593
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Organic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
326
307
0.942
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Waste beneficiation
CO2 adsorption
Brine mineralization
Fabrication of CO2 sorbents from waste
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
420
262
0.624
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Agriculture
Forestry and Environment
Soil - land use interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
447
257
0.575
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Crop Protection
Crop Production
Root & Tuber Crops
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
385
247
0.642
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Employee empowerment
socila capital
organizational citizenship
Green Human Resource management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
285
226
0.793
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Biodiversity
Conservation
Spatial Ecology
Climate Change
Environmental Planning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
239
215
0.900
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Curriculum Theory
Trends in Teacher Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
229
205
0.895
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Education Communication Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
207
191
0.923
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Educational Foundations
Policy studies
Higher Education Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
181
0.910
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
gut microbiome
diabetes
food systems
legumes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
177
0.957
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Waste modification and beneficiation
Carbon mineralization
CO2 sequestration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
216
170
0.787
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
strategic management
Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
178
150
0.843
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Cognitive Linguistics
multilingual education
phonology
sociolinguistics and syntax
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
194
137
0.706
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Human Resource Management
Gender issues
Quality of Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
135
0.628
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Entrepreneurship
human resource development and strategic management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
135
0.771
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Climatology
meteorology
hydro-climatology
Geography
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136
134
0.985
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Management
governance
higher education management
public administration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163
132
0.810
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
psychology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131
118
0.901
* Last 6 Years Citation Counts Rankings
Rankings
282,294
155
1
Ranking Based On Selection: 1
Duncan Kimuyu
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,107
1,865
0.885
* Last 6 Years Citation Counts Rankings
Rankings
416,689
270
2
Ranking Based On Selection: 2
Charles Ngugi
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,968
1,196
0.608
* Last 6 Years Citation Counts Rankings
Rankings
510,376
408
3
Ranking Based On Selection: 3
Mwangi James Kinyanjui
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,086
912
0.840
* Last 6 Years Citation Counts Rankings
Rankings
525,207
429
4
Ranking Based On Selection: 4
Moses Muriithi mathenge
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,067
875
0.820
molecular characterisation of crops
* Last 6 Years Citation Counts Rankings
Rankings
658,801
628
5
Ranking Based On Selection: 5
Jeremiah Kebwaro
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,285
605
0.471
Nuclear Science and Technology
* Last 6 Years Citation Counts Rankings
Rankings
862,133
976
6
Ranking Based On Selection: 6
Linus Gitonga
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
875
364
0.416
Agricultural Entomology
* Last 6 Years Citation Counts Rankings
Rankings
867,258
985
7
Ranking Based On Selection: 7
Michael Ni Lokuruka
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
607
360
0.593
Fish/Food processing and quality assurance
Food processing & nutrient conservation
Food and culture
Food and nutrition securi
* Last 6 Years Citation Counts Rankings
Rankings
937,625
1,103
8
Ranking Based On Selection: 8
David Sujee Makhanu
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
326
307
0.942
* Last 6 Years Citation Counts Rankings
Rankings
1,008,713
1,249
9
Ranking Based On Selection: 9
Grace Nyambura Muriithi
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
420
262
0.624
Waste beneficiation
CO2 adsorption
Brine mineralization
Fabrication of CO2 sorbents from waste
* Last 6 Years Citation Counts Rankings
Rankings
1,017,467
1,262
10
Ranking Based On Selection: 10
Hellen Wangechi Kamiri
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
447
257
0.575
Agriculture
Forestry and Environment
Soil - land use interactions
* Last 6 Years Citation Counts Rankings
Rankings
1,035,759
1,302
11
Ranking Based On Selection: 11
Agnes W. Kihurani
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
385
247
0.642
Crop Protection
Crop Production
Root & Tuber Crops
* Last 6 Years Citation Counts Rankings
Rankings
1,077,359
1,398
12
Ranking Based On Selection: 12
Anne Kariuki
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
285
226
0.793
Employee empowerment
socila capital
organizational citizenship
Green Human Resource management
* Last 6 Years Citation Counts Rankings
Rankings
1,100,694
1,459
13
Ranking Based On Selection: 13
Geoffrey Wambugu
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
239
215
0.900
Biodiversity
Conservation
Spatial Ecology
Climate Change
Environmental Planning
* Last 6 Years Citation Counts Rankings
Rankings
1,122,756
1,524
14
Ranking Based On Selection: 14
Josphat Kagema
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
229
205
0.895
Curriculum Theory
Trends in Teacher Education
* Last 6 Years Citation Counts Rankings
Rankings
1,156,148
1,634
15
Ranking Based On Selection: 15
David G. Mugo
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
207
191
0.923
* Last 6 Years Citation Counts Rankings
Rankings
1,181,147
1,715
16
Ranking Based On Selection: 16
Jared Ochwangi Motanya
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
181
0.910
Educational Foundations
Policy studies
Higher Education Studies
* Last 6 Years Citation Counts Rankings
Rankings
1,191,897
1,738
17
Ranking Based On Selection: 17
Sheila Kilonzi
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
177
0.957
* Last 6 Years Citation Counts Rankings
Rankings
1,210,058
1,795
18
Ranking Based On Selection: 18
Grace Muriithi
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
216
170
0.787
Waste modification and beneficiation
Carbon mineralization
CO2 sequestration
* Last 6 Years Citation Counts Rankings
Rankings
1,269,459
1,982
19
Ranking Based On Selection: 19
Beatrice Ombaka
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
178
150
0.843
* Last 6 Years Citation Counts Rankings
Rankings
1,311,228
2,119
20
Ranking Based On Selection: 20
Moses Gatambuki
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
194
137
0.706
Cognitive Linguistics
multilingual education
phonology
sociolinguistics and syntax
* Last 6 Years Citation Counts Rankings
Rankings
1,317,825
2,142
21
Ranking Based On Selection: 21
Tabitha Wangare Wambui
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
215
135
0.628
Human Resource Management
Gender issues
Quality of Education
* Last 6 Years Citation Counts Rankings
Rankings
1,318,301
2,146
22
Ranking Based On Selection: 22
Teresia Kyalo
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
175
135
0.771
Entrepreneurship
human resource development and strategic management
* Last 6 Years Citation Counts Rankings
Rankings
1,322,973
2,165
23
Ranking Based On Selection: 23
Peter K. Musyimi
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136
134
0.985
Climatology
meteorology
hydro-climatology
Geography
Climate change
* Last 6 Years Citation Counts Rankings
Rankings
1,328,804
2,183
24
Ranking Based On Selection: 24
Kellen Kiambati
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
163
132
0.810
Management
governance
higher education management
public administration
* Last 6 Years Citation Counts Rankings
Rankings
1,380,602
2,371
25
Ranking Based On Selection: 25
Margaret Wanjiru Gitumu
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131
118
0.901