Citation Rankings
Highly Cited Researchers
US Fish and Wildlife Service Highly Cited Researchers Citation 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
ecology
evolution
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,420
486
0.342
* Total Citation Counts Rankings
Ranking Based On Selection :27
Ecology
Conservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,311
684
0.522
* Total Citation Counts Rankings
Ranking Based On Selection :28
Conservation Biology
Population Dynamics
Applied Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,255
1,006
0.802
* Total Citation Counts Rankings
Ranking Based On Selection :29
decision analysis
expert elicitation
PVAs
endangered species
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,247
720
0.577
* Total Citation Counts Rankings
Ranking Based On Selection :30
Ecology
Wildlife Management
Conservation Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,230
410
0.333
* Total Citation Counts Rankings
Ranking Based On Selection :31
Statistics
Fisheries
Riverine Ecosystems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,227
676
0.551
* Total Citation Counts Rankings
Ranking Based On Selection :32
remote sensing
floodplains
hydrology
swamps
wetlands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,226
284
0.232
* Total Citation Counts Rankings
Ranking Based On Selection :33
wildlife disease
statistical and quantitative ecology
decision analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,212
505
0.417
* Total Citation Counts Rankings
Ranking Based On Selection :34
Fluvial Geomorphology
Rivers
Stream Restoration
Science Communication
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,190
624
0.524
* Total Citation Counts Rankings
Ranking Based On Selection :35
Migration ecology
avian conservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,131
788
0.697
* Total Citation Counts Rankings
Ranking Based On Selection :36
Wildlife Forensics
Fish population genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,125
273
0.243
* Total Citation Counts Rankings
Ranking Based On Selection :37
wildlife management
wildlife biology
population ecology
adaptive management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,109
632
0.570
* Total Citation Counts Rankings
Ranking Based On Selection :38
Population genetics and genomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,054
383
0.363
* Total Citation Counts Rankings
Ranking Based On Selection :39
Landscape Ecology
Climate Change Adaptation
Biodiversity
Wildlife Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,032
746
0.723
* Total Citation Counts Rankings
Ranking Based On Selection :40
Conservation Biology
Endangered Species
Ecological Modeling
Bat Ecology
Acoustic Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,021
607
0.595
* Total Citation Counts Rankings
Ranking Based On Selection :41
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
996
707
0.710
* Total Citation Counts Rankings
Ranking Based On Selection :42
Shorebird ecology
conservation biology
climate change
sea level rise resiliency
structured decision making
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
981
366
0.373
* Total Citation Counts Rankings
Ranking Based On Selection :43
Fisheries
Population biology
salmon ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
961
443
0.461
* Total Citation Counts Rankings
Ranking Based On Selection :44
Aquatic Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
939
460
0.490
* Total Citation Counts Rankings
Ranking Based On Selection :45
Cervus canadensis
ungulate migration
wildlife disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
938
584
0.623
* Total Citation Counts Rankings
Ranking Based On Selection :46
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
923
583
0.632
* Total Citation Counts Rankings
Ranking Based On Selection :47
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
900
487
0.541
* Total Citation Counts Rankings
Ranking Based On Selection :48
crayfish life history
reproductive physiology amphibians
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
896
284
0.317
* Total Citation Counts Rankings
Ranking Based On Selection :49
Landscape Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
848
760
0.896
* Total Citation Counts Rankings
Ranking Based On Selection :50
salt marsh restoration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
846
381
0.450
* Total Citation Counts Rankings
Rankings
542,839
167,597
26
Ranking Based On Selection: 26
Steve Morey
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,420
486
0.342
ecology
evolution
conservation biology
* Total Citation Counts Rankings
Rankings
570,308
174,789
27
Ranking Based On Selection: 27
Nathan R Franssen
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,311
684
0.522
* Total Citation Counts Rankings
Rankings
585,495
178,623
28
Ranking Based On Selection: 28
Judy Che-Castaldo
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,255
1,006
0.802
Conservation Biology
Population Dynamics
Applied Ecology
* Total Citation Counts Rankings
Rankings
587,746
179,227
29
Ranking Based On Selection: 29
Jennifer Szymanski
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,247
720
0.577
decision analysis
expert elicitation
PVAs
endangered species
* Total Citation Counts Rankings
Rankings
592,658
180,530
30
Ranking Based On Selection: 30
Roy C Averill-Murray
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,230
410
0.333
Ecology
Wildlife Management
Conservation Biology
* Total Citation Counts Rankings
Rankings
593,458
180,747
31
Ranking Based On Selection: 31
Nicholas A Som
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,227
676
0.551
Statistics
Fisheries
Riverine Ecosystems
* Total Citation Counts Rankings
Rankings
593,863
180,862
32
Ranking Based On Selection: 32
Yvonne Allen
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,226
284
0.232
remote sensing
floodplains
hydrology
swamps
wetlands
* Total Citation Counts Rankings
Rankings
597,833
181,855
33
Ranking Based On Selection: 33
Erik E Osnas
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,212
505
0.417
wildlife disease
statistical and quantitative ecology
decision analysis
* Total Citation Counts Rankings
Rankings
604,149
183,503
34
Ranking Based On Selection: 34
Janine M Castro
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,190
624
0.524
Fluvial Geomorphology
Rivers
Stream Restoration
Science Communication
* Total Citation Counts Rankings
Rankings
622,210
188,122
35
Ranking Based On Selection: 35
James A Johnson
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,131
788
0.697
Migration ecology
avian conservation
* Total Citation Counts Rankings
Rankings
624,395
188,690
36
Ranking Based On Selection: 36
Mary Burnham Curtis
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,125
273
0.243
Wildlife Forensics
Fish population genetics
* Total Citation Counts Rankings
Rankings
629,292
189,982
37
Ranking Based On Selection: 37
G Scott Boomer
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,109
632
0.570
wildlife management
wildlife biology
population ecology
adaptive management
* Total Citation Counts Rankings
Rankings
647,600
194,609
38
Ranking Based On Selection: 38
Evan W Carson
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,054
383
0.363
Population genetics and genomics
* Total Citation Counts Rankings
Rankings
654,963
196,516
39
Ranking Based On Selection: 39
Dawn Robin Magness
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,032
746
0.723
Landscape Ecology
Climate Change Adaptation
Biodiversity
Wildlife Biology
* Total Citation Counts Rankings
Rankings
658,882
197,506
40
Ranking Based On Selection: 40
Mark A Hayes
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,021
607
0.595
Conservation Biology
Endangered Species
Ecological Modeling
Bat Ecology
Acoustic Analysis
* Total Citation Counts Rankings
Rankings
667,686
199,667
41
Ranking Based On Selection: 41
Jason Tack
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
996
707
0.710
* Total Citation Counts Rankings
Rankings
673,245
201,038
42
Ranking Based On Selection: 42
Kevin Kalasz
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
981
366
0.373
Shorebird ecology
conservation biology
climate change
sea level rise resiliency
structured decision making
* Total Citation Counts Rankings
Rankings
680,635
202,834
43
Ranking Based On Selection: 43
Lauren Yamane
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
961
443
0.461
Fisheries
Population biology
salmon ecology
* Total Citation Counts Rankings
Rankings
688,916
204,875
44
Ranking Based On Selection: 44
Brent Murry
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
939
460
0.490
* Total Citation Counts Rankings
Rankings
689,226
204,946
45
Ranking Based On Selection: 45
Eric K Cole
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
938
584
0.623
Cervus canadensis
ungulate migration
wildlife disease
* Total Citation Counts Rankings
Rankings
695,130
206,346
46
Ranking Based On Selection: 46
Andrew Allstadt
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
923
583
0.632
* Total Citation Counts Rankings
Rankings
704,274
208,584
47
Ranking Based On Selection: 47
Matthew J Butler
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
900
487
0.541
* Total Citation Counts Rankings
Rankings
705,909
208,971
48
Ranking Based On Selection: 48
Chester R Figiel Jr
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
896
284
0.317
crayfish life history
reproductive physiology amphibians
* Total Citation Counts Rankings
Rankings
725,290
213,595
49
Ranking Based On Selection: 49
J Patrick Donnelly
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
848
760
0.896
* Total Citation Counts Rankings
Rankings
726,422
213,889
50
Ranking Based On Selection: 50
Susan C Adamowicz
US Fish and Wildlife Service
Washington, D.C., United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
846
381
0.450