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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
748
427
0.571
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Botany
Plant Systematics
Palynology
Conservation Biology
Molecular Biology & Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
622
406
0.653
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Ecology
Ecophysiology
Hydrobotany
Phytoremediation .
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
602
423
0.703
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Parasitology
Zoonoses
One Health
NTDs
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
547
355
0.649
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Zoology
Parasitology
Immunology and Virology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
295
234
0.793
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Biotechnology
Biology
Biodiversity
Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
Okechukwu Idumah Okogwu
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
748
427
0.571
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Catherine V. Nnamani
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
622
406
0.653
Botany
Plant Systematics
Palynology
Conservation Biology
Molecular Biology & Climate Change
Ufere N. Uka
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
602
423
0.703
Ecology
Ecophysiology
Hydrobotany
Phytoremediation .
Michael Okpara Elom
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
547
355
0.649
Parasitology
Zoonoses
One Health
NTDs
Public Health
Ani, Ogonna Christiana
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
295
234
0.793
Zoology
Parasitology
Immunology and Virology
Chidinma Blessing Anyanwu|Egwuom Godswill Blessing C
Ebonyi State University
Abakaliki, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
Biotechnology
Biology
Biodiversity
Cancer