Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
tourism
recreation
leisure
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,578
3,397
0.270
* Total Citation Counts Rankings
Ranking Based On Selection :2
sustainable tourism
sustainable development
visitor management
protected area management
landscape disturbance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,831
1,927
0.503
* Total Citation Counts Rankings
Ranking Based On Selection :3
Hospitality/Tourism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,210
860
0.389
* Total Citation Counts Rankings
Ranking Based On Selection :4
biocultural conservation
sustainable tourism
natural resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,546
1,261
0.816
* Total Citation Counts Rankings
Ranking Based On Selection :5
Protected Area Planning and Management
Environmental Policy and Governance
Sustainable Tourism
Conservation Capacity Building
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,110
489
0.441
* Total Citation Counts Rankings
Ranking Based On Selection :6
mountain resort development
social capital
tourism impacts
sustainable tourism
resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
539
305
0.566
Joseph O Leary
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,578
3,397
0.270
Stuart Cottrell
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,831
1,927
0.503
sustainable tourism
sustainable development
visitor management
protected area management
landscape disturbance
Soo Kang
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,210
860
0.389
Christina T Cavaliere
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,546
1,261
0.816
biocultural conservation
sustainable tourism
natural resources
James Barborak
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,110
489
0.441
Protected Area Planning and Management
Environmental Policy and Governance
Sustainable Tourism
Conservation Capacity Building
Natalie Ooi
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
539
305
0.566
mountain resort development
social capital
tourism impacts
sustainable tourism
resilience