Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers CitationNatural Sciences / Geography Rankings 2025
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 :26
Remote sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,206
13,529
0.374
* Total Citation Counts Rankings
Ranking Based On Selection :27
historical geography
cultural geography
geography
human geography
mobilities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,981
15,163
0.421
* Total Citation Counts Rankings
Ranking Based On Selection :28
Remote Sensing
fire
land use and land cover change
geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,512
18,361
0.517
* Total Citation Counts Rankings
Ranking Based On Selection :29
physical geography
climatology
paleoclimatology
paleoecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,117
10,457
0.298
* Total Citation Counts Rankings
Ranking Based On Selection :30
land use change
supply chain governance
sustainable agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,905
17,584
0.504
* Total Citation Counts Rankings
Ranking Based On Selection :31
Tropical forest ecology
evolution
conservation
carbon cycling
global change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,753
18,504
0.532
* Total Citation Counts Rankings
Ranking Based On Selection :32
Migration
Rural Geography
the Mediterranean
Islands
Ageing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,420
13,090
0.380
* Total Citation Counts Rankings
Ranking Based On Selection :33
Macroecology
Biogeography
Tropical Ecology
Island Biogeography
Ecoinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,918
26,084
0.769
* Total Citation Counts Rankings
Ranking Based On Selection :34
Global Ecology
Anthropocene
Land use change
Landscape Ecology
Sustainable Land Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,552
22,383
0.667
* Total Citation Counts Rankings
Ranking Based On Selection :35
Geochronology
paleoclimate
speleothems
environmental radioactivity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,960
15,794
0.479
* Total Citation Counts Rankings
Ranking Based On Selection :36
race and ethnic groups
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,864
19,186
0.584
* Total Citation Counts Rankings
Ranking Based On Selection :37
Glaciology
High Mountains
Climate Change
Geomorphology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,699
9,456
0.289
* Total Citation Counts Rankings
Ranking Based On Selection :38
dendroecology
paleoclimatology
mycology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,318
21,175
0.655
* Total Citation Counts Rankings
Ranking Based On Selection :39
physical geography
soils
ecology
biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,794
8,845
0.278
* Total Citation Counts Rankings
Ranking Based On Selection :40
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,680
8,619
0.272
* Total Citation Counts Rankings
Ranking Based On Selection :41
governance
extractive industry
development geography
socio-environmental conflicts
political ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,520
10,411
0.330
* Total Citation Counts Rankings
Ranking Based On Selection :42
climate
biogeochmical cycles
carbon cycle
energy exchange
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,324
10,667
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :43
Disaster Risk Reduction
Climate Change Adaptation
Urban Political Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,292
17,260
0.552
* Total Citation Counts Rankings
Ranking Based On Selection :44
Dendrochronology
Climate
Climate Change
Paleoclimate
Geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,133
13,367
0.444
* Total Citation Counts Rankings
Ranking Based On Selection :45
geographic information science
lidar
geovisualization
spatial cognition
navigation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,962
29,490
0.984
* Total Citation Counts Rankings
Ranking Based On Selection :46
land use and land cover change
biomass estimation
impervious surface
land degradation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,225
13,772
0.471
* Total Citation Counts Rankings
Ranking Based On Selection :47
biogeography
biogeochemistry
climate change
biodiversity
vegetation modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,021
16,382
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :48
global futures
human geography
climate justice and adaptation
loss and resilience
environmental humanities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,674
19,672
0.686
* Total Citation Counts Rankings
Ranking Based On Selection :49
Renewable Energy
Place Attachment
Social Acceptance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,612
15,095
0.547
* Total Citation Counts Rankings
Ranking Based On Selection :50
geogeraphy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,594
23,917
0.867
* Total Citation Counts Rankings
Rankings
16,145
7,642
60
Ranking Based On Selection: 26
Dar A Roberts
University of California Santa Barbara
Santa Barbara, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36,206
13,529
0.374
* Total Citation Counts Rankings
Rankings
16,317
1,422
35
Ranking Based On Selection: 27
Tim Cresswell
University of Edinburgh
Edinburgh, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,981
15,163
0.421
historical geography
cultural geography
geography
human geography
mobilities
* Total Citation Counts Rankings
Rankings
16,645
7,858
49
Ranking Based On Selection: 28
David P Roy
Michigan State University
East Lansing, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,512
18,361
0.517
Remote Sensing
fire
land use and land cover change
geography
* Total Citation Counts Rankings
Rankings
16,941
7,989
22
Ranking Based On Selection: 29
Patrick J Bartlein
University of Oregon
Eugene, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,117
10,457
0.298
physical geography
climatology
paleoclimatology
paleoecology
* Total Citation Counts Rankings
Rankings
17,103
8,058
85
Ranking Based On Selection: 30
Holly Gibbs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,905
17,584
0.504
land use change
supply chain governance
sustainable agriculture
* Total Citation Counts Rankings
Rankings
17,212
1,508
23
Ranking Based On Selection: 31
Tim Baker
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,753
18,504
0.532
Tropical forest ecology
evolution
conservation
carbon cycling
global change
* Total Citation Counts Rankings
Rankings
17,489
1,538
14
Ranking Based On Selection: 32
Russell King
University of Sussex
Brighton, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,420
13,090
0.380
Migration
Rural Geography
the Mediterranean
Islands
Ageing
* Total Citation Counts Rankings
Rankings
17,895
781
3
Ranking Based On Selection: 33
Holger Kreft
Georg-August-Universität Göttingen
Göttingen, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,918
26,084
0.769
Macroecology
Biogeography
Tropical Ecology
Island Biogeography
Ecoinformatics
* Total Citation Counts Rankings
Rankings
18,168
8,528
4
Ranking Based On Selection: 34
Erle C Ellis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,552
22,383
0.667
Global Ecology
Anthropocene
Land use change
Landscape Ecology
Sustainable Land Management
* Total Citation Counts Rankings
Rankings
18,651
1,648
42
Ranking Based On Selection: 35
David A. Richards
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,960
15,794
0.479
Geochronology
paleoclimate
speleothems
environmental radioactivity
* Total Citation Counts Rankings
Rankings
18,744
8,786
1
Ranking Based On Selection: 36
James P Allen
California State University Northridge
Northridge, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,864
19,186
0.584
* Total Citation Counts Rankings
Rankings
18,876
352
45
Ranking Based On Selection: 37
Wilfried Haeberli
Universität Zürich
Zürich, Switzerland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,699
9,456
0.289
Glaciology
High Mountains
Climate Change
Geomorphology
* Total Citation Counts Rankings
Rankings
19,220
1,701
132
Ranking Based On Selection: 38
Ulf Buentgen
University of Cambridge
Cambridge, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,318
21,175
0.655
* Total Citation Counts Rankings
Rankings
19,766
818
70
Ranking Based On Selection: 39
Tim Moore
McGill University
Montréal, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,794
8,845
0.278
physical geography
soils
ecology
biogeochemistry
* Total Citation Counts Rankings
Rankings
19,878
55
19
Ranking Based On Selection: 40
Bruce Hewitson
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,680
8,619
0.272
* Total Citation Counts Rankings
Rankings
20,021
9,340
2
Ranking Based On Selection: 41
Anthony Bebbington
Clark University
Worcester, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,520
10,411
0.330
governance
extractive industry
development geography
socio-environmental conflicts
political ecology
* Total Citation Counts Rankings
Rankings
20,239
252
30
Ranking Based On Selection: 42
Anders Lindroth
Lund University
Lund, Sweden
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,324
10,667
0.341
climate
biogeochmical cycles
carbon cycle
energy exchange
* Total Citation Counts Rankings
Rankings
20,285
1,804
86
Ranking Based On Selection: 43
Mark Pelling
King's College London
London, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,292
17,260
0.552
Disaster Risk Reduction
Climate Change Adaptation
Urban Political Ecology
* Total Citation Counts Rankings
Rankings
21,452
957
6
Ranking Based On Selection: 44
Jan Esper
Helmholtz Institut Mainz
Mainz, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,133
13,367
0.444
Dendrochronology
Climate
Climate Change
Paleoclimate
Geography
* Total Citation Counts Rankings
Rankings
21,649
10,050
22
Ranking Based On Selection: 45
Thomas J Pingel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,962
29,490
0.984
geographic information science
lidar
geovisualization
spatial cognition
navigation
* Total Citation Counts Rankings
Rankings
22,574
763
1
Ranking Based On Selection: 46
Dengsheng Lu
Fujian Normal University
Fuzhou, China
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,225
13,772
0.471
land use and land cover change
biomass estimation
impervious surface
land degradation
* Total Citation Counts Rankings
Rankings
22,824
1,011
2
Ranking Based On Selection: 47
Thomas Hickler
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,021
16,382
0.564
biogeography
biogeochemistry
climate change
biodiversity
vegetation modelling
* Total Citation Counts Rankings
Rankings
23,249
994
56
Ranking Based On Selection: 48
Petra Tschakert
University of Western Australia
Crawley, Australia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,674
19,672
0.686
global futures
human geography
climate justice and adaptation
loss and resilience
environmental humanities
* Total Citation Counts Rankings
Rankings
24,626
2,151
43
Ranking Based On Selection: 49
Patrick Devine Wright
University of Exeter
Exeter, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,612
15,095
0.547
Renewable Energy
Place Attachment
Social Acceptance
* Total Citation Counts Rankings
Rankings
24,650
150
2
Ranking Based On Selection: 50
Mahla Etemadi
Ferdowsi University of Mashhad
Mashhad, Iran
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,594
23,917
0.867