Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
100,207
Country Rank
430
Institution Rank : 64
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Vincent O Flaherty](https://cdn.adscientificindex.com/pictures/9c/1847842.jpg)
Anaerobic digestion
bioeconomy
methanogenesis
fermentation
agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,637
3,899
0.405
* Total Citation Counts Rankings
World Rank
123,322
Country Rank
562
Institution Rank : 81
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Gavin Collins](https://cdn.adscientificindex.com/pictures/ee/1841886.jpg)
Microbiology
Microbial ecology
Microbial physiology
Biofilmology
Environmental Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,017
4,759
0.594
* Total Citation Counts Rankings
World Rank
171,489
Country Rank
807
Institution Rank : 112
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Conor P O Byrne|Conor O'Byrne](https://cdn.adscientificindex.com/pictures/3a/1840174.jpg)
Microbiology
stress responses
sigma factors
gene regulation
Listeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,862
2,624
0.448
* Total Citation Counts Rankings
World Rank
331,955
Country Rank
1,608
Institution Rank : 200
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Thomas Gerard Barry|Tom Barry](https://cdn.adscientificindex.com/pictures/d3/1847332.jpg)
Nucleic Acid Diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,825
638
0.226
* Total Citation Counts Rankings
World Rank
408,612
Country Rank
1,990
Institution Rank : 242
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Florence Abram](https://cdn.adscientificindex.com/pictures/d5/1765843.jpg)
Microbiology - Microbial Ecology - Systems Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,160
1,450
0.671
* Total Citation Counts Rankings
World Rank
419,613
Country Rank
2,048
Institution Rank : 251
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Cyril Carroll](https://cdn.adscientificindex.com/pictures/b3/1765781.jpg)
Microbiology
Campylobacter research
Campylobacter Epidemiology
Adaptive Tolerance Response
Novel antimicrobials in reducing Campylobacter ...
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,083
413
0.198
* Total Citation Counts Rankings
World Rank
487,906
Country Rank
2,397
Institution Rank : 293
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Elaine M Waters](https://cdn.adscientificindex.com/pictures/b0/1765819.jpg)
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,681
1,010
0.601
* Total Citation Counts Rankings
World Rank
583,319
Country Rank
2,803
Institution Rank : 329
![](https://cdn.adscientificindex.com/logos/6219.png)
![Ireland](/flags/ie.png)
![Gerard Ta Fleming](https://cdn.adscientificindex.com/pictures/d2/1765850.jpg)
Environmetal Microbiology
Chemostat Selection
Antimicrobial Resistance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,272
630
0.495
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
100,207
![Ireland](/flags/ie.png)
430
![](https://cdn.adscientificindex.com/logos/6219.png)
64
Vincent O Flaherty
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,637
3,899
0.405
![](https://cdn.adscientificindex.com/logos/6219.png)
Anaerobic digestion
bioeconomy
methanogenesis
fermentation
agriculture
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
123,322
![Ireland](/flags/ie.png)
562
![](https://cdn.adscientificindex.com/logos/6219.png)
81
Gavin Collins
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,017
4,759
0.594
![](https://cdn.adscientificindex.com/logos/6219.png)
Microbiology
Microbial ecology
Microbial physiology
Biofilmology
Environmental Biotechnology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
171,489
![Ireland](/flags/ie.png)
807
![](https://cdn.adscientificindex.com/logos/6219.png)
112
Conor P O Byrne|Conor O'Byrne
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,862
2,624
0.448
![](https://cdn.adscientificindex.com/logos/6219.png)
Microbiology
stress responses
sigma factors
gene regulation
Listeria
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
331,955
![Ireland](/flags/ie.png)
1,608
![](https://cdn.adscientificindex.com/logos/6219.png)
200
Thomas Gerard Barry|Tom Barry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,825
638
0.226
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
408,612
![Ireland](/flags/ie.png)
1,990
![](https://cdn.adscientificindex.com/logos/6219.png)
242
Florence Abram
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,160
1,450
0.671
![](https://cdn.adscientificindex.com/logos/6219.png)
Microbiology - Microbial Ecology - Systems Biology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
419,613
![Ireland](/flags/ie.png)
2,048
![](https://cdn.adscientificindex.com/logos/6219.png)
251
Cyril Carroll
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,083
413
0.198
![](https://cdn.adscientificindex.com/logos/6219.png)
Microbiology
Campylobacter research
Campylobacter Epidemiology
Adaptive Tolerance Response
Novel antimicrobials in reducing Campylobacter ...
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
487,906
![Ireland](/flags/ie.png)
2,397
![](https://cdn.adscientificindex.com/logos/6219.png)
293
Elaine M Waters
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,681
1,010
0.601
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
583,319
![Ireland](/flags/ie.png)
2,803
![](https://cdn.adscientificindex.com/logos/6219.png)
329
Gerard Ta Fleming
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,272
630
0.495
![](https://cdn.adscientificindex.com/logos/6219.png)
Environmetal Microbiology
Chemostat Selection
Antimicrobial Resistance