Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Counts Rankings
Ranking Based On Selection: 1

Tree Biology
Ecophysiology
Arboriculture
Urban Tree
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,379
2,227
0.936
* Total Citation Counts Rankings
Ranking Based On Selection: 2

Horticulture
Tapestry Lawns
Plants
Biodiversity
Garden Scienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
262
144
0.550
* Total Citation Counts Rankings
Ranking Based On Selection: 3

Veterinary Nursing
Veterinary Scienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65
38
0.585
Andrew Hirons
Myerscough College
Preston, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,379
2,227
0.936
Lionel Smith
Myerscough College
Preston, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
262
144
0.550
Horticulture
Tapestry Lawns
Plants
Biodiversity
Garden Scienc
Claire Bloor
Myerscough College
Preston, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65
38
0.585
Veterinary Nursing
Veterinary Scienc