Citation Rankings
Highly Cited Researchers

University of Pretoria Highly Cited Researchers CitationEngineering & Technology / Environmental Science & Engineering Rankings 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.

* Total Citation Counts Rankings
Ranking Based On Selection :1
South Africa
Barend Erasmus
Climate change
sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,059
5,654
0.375
* Total Citation Counts Rankings
Ranking Based On Selection :2
South Africa
Emma Archer
climate
ecosystems
sustainable agriculture
Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,986
5,417
0.678
* Total Citation Counts Rankings
Ranking Based On Selection :3
South Africa
Peter Christiaan Le Roux
Ecology
Climate Change
Plant-plant interactions
Ecosystem engineers
Species distributions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,527
3,751
0.679
* Total Citation Counts Rankings
Ranking Based On Selection :4
South Africa
C (Tiaan) De Jager
Environmental Health
Reproductive Toxicology
Andrology
Malaria
Endocrine disrupting chemicals and health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,712
834
0.308
* Total Citation Counts Rankings
Ranking Based On Selection :5
South Africa
Halina Rollin
environmental health
occupational health
biomonitoring
prenatal exposures
birth outcomes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,748
678
0.388
* Total Citation Counts Rankings
Ranking Based On Selection :6
South Africa
Joyce Shirinde
Air pollution
Climate change
Environmental Health
Children’s Environmental Health
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
376
330
0.878
* Total Citation Counts Rankings
Ranking Based On Selection :7
South Africa
Tafadzwa Mushonga
Environment and society
Political Ecology
Environmental Humanities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
112
111
0.991
* Total Citation Counts Rankings
Rankings
59,481
South Africa
198
15
Ranking Based On Selection: 1
Barend Erasmus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,059
5,654
0.375
* Total Citation Counts Rankings
Rankings
126,910
South Africa
475
41
Ranking Based On Selection: 2
Emma Archer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,986
5,417
0.678
* Total Citation Counts Rankings
Rankings
185,833
South Africa
769
65
Ranking Based On Selection: 3
Peter Christiaan Le Roux
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,527
3,751
0.679
Ecology
Climate Change
Plant-plant interactions
Ecosystem engineers
Species distributions
* Total Citation Counts Rankings
Rankings
350,283
South Africa
1,591
157
Ranking Based On Selection: 4
C (Tiaan) De Jager
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,712
834
0.308
Environmental Health
Reproductive Toxicology
Andrology
Malaria
Endocrine disrupting chemicals and health
* Total Citation Counts Rankings
Rankings
483,959
South Africa
2,299
223
Ranking Based On Selection: 5
Halina Rollin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,748
678
0.388
environmental health
occupational health
biomonitoring
prenatal exposures
birth outcomes
* Total Citation Counts Rankings
Rankings
1,033,137
South Africa
5,906
581
Ranking Based On Selection: 6
Joyce Shirinde
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
376
330
0.878
Air pollution
Climate change
Environmental Health
Children’s Environmental Health
Public Health
* Total Citation Counts Rankings
Rankings
1,539,237
South Africa
10,398
910
Ranking Based On Selection: 7
Tafadzwa Mushonga
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
112
111
0.991
Environment and society
Political Ecology
Environmental Humanities