University, Subject, Country, Region, World
University of California Davis 43 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Environmental endocrinology
Metrics
H-Index
i10 Index
Citation Counts
142
508
73,508
* Total H IndexRankings
Ranking Based On Selection: 2
Theoretical Ecology
Population Biology
Mathematical Biology
Conservation Biology
Bioeconomics
Metrics
H-Index
i10 Index
Citation Counts
102
284
44,877
* Total H IndexRankings
Ranking Based On Selection: 3
Cultural evolution
ecology
Metrics
H-Index
i10 Index
Citation Counts
91
221
59,411
* Total H IndexRankings
Ranking Based On Selection: 4
Aerosol science
atmospheric chemistry
environmental toxicology
analytical chemistry
Metrics
H-Index
i10 Index
Citation Counts
89
246
36,431
* Total H IndexRankings
Ranking Based On Selection: 5
environmental policy
collective action
social networks
Metrics
H-Index
i10 Index
Citation Counts
73
139
19,322
* Total H IndexRankings
Ranking Based On Selection: 6
Agriculture
Biodiversity
Climate
Data science
Ecology
Metrics
H-Index
i10 Index
Citation Counts
70
139
98,920
* Total H IndexRankings
Ranking Based On Selection: 7
Energy
alterrnative fuels
hydrogen
fuel cells
Metrics
H-Index
i10 Index
Citation Counts
49
108
13,783
* Total H IndexRankings
Ranking Based On Selection: 8
Benthic Marine Ecology
Biological Invasions
Climate Change
Metrics
H-Index
i10 Index
Citation Counts
47
91
13,648
* Total H IndexRankings
Ranking Based On Selection: 9
Environmental Engineering
surface water quality
water reuse
energy recovery from waste
Metrics
H-Index
i10 Index
Citation Counts
47
77
8,379
* Total H IndexRankings
Ranking Based On Selection: 10
keratinocytes
Metrics
H-Index
i10 Index
Citation Counts
46
144
11,265
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* Total H IndexRankings
Ranking Based On Selection: 11
environmental genomics
ecological genomics
evolutionary genomics
population genomics
ecotoxicology
Metrics
H-Index
i10 Index
Citation Counts
42
65
9,122
* Total H IndexRankings
Ranking Based On Selection: 12
Environmental and occupational epidemiology
cancer
reproductive outcomes
and injury epidemiology
epidemiologic methods
Metrics
H-Index
i10 Index
Citation Counts
38
56
5,379
* Total H IndexRankings
Ranking Based On Selection: 13
Crop modelling
Controlled Environment Agriculture
Greenhouse automation
Metrics
H-Index
i10 Index
Citation Counts
35
68
3,771
* Total H IndexRankings
Ranking Based On Selection: 14
Theoretical population biology
conservation biology
marine ecology
evolutionary ecology
Metrics
H-Index
i10 Index
Citation Counts
34
56
3,671
* Total H IndexRankings
Ranking Based On Selection: 15
Metrics
H-Index
i10 Index
Citation Counts
32
53
4,592
* Total H IndexRankings
Ranking Based On Selection: 16
Water
waste
renewable energy
contamination
food
Metrics
H-Index
i10 Index
Citation Counts
30
65
3,376
* Total H IndexRankings
Ranking Based On Selection: 17
Water Resources Planning and Management
Metrics
H-Index
i10 Index
Citation Counts
29
63
3,151
* Total H IndexRankings
Ranking Based On Selection: 18
Hydrology
Irrigation
Agricultural Water Management
Agrohydrology
Climate Smart Agriculture
Metrics
H-Index
i10 Index
Citation Counts
28
74
2,893
* Total H IndexRankings
Ranking Based On Selection: 19
Water Resources Management
Hydrology
waste management
vadose zone
Metrics
H-Index
i10 Index
Citation Counts
28
57
2,458
* Total H IndexRankings
Ranking Based On Selection: 20
Waterborne zoonoses
wildlife health
public health
parasitology
Metrics
H-Index
i10 Index
Citation Counts
27
49
2,346
* Total H IndexRankings
Ranking Based On Selection: 21
Earth system modeling
climate impacts
air quality and health
biogeochemistry
multisector dynamics
Metrics
H-Index
i10 Index
Citation Counts
26
44
2,846
* Total H IndexRankings
Ranking Based On Selection: 22
Chronic disease and environmental epidemiology
climate change
vulnerable populations
Metrics
H-Index
i10 Index
Citation Counts
26
29
8,906
* Total H IndexRankings
Ranking Based On Selection: 23
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
25
30
2,601
* Total H IndexRankings
Ranking Based On Selection: 24
rangelands
grazinglands
drought
climate change adaptation
participatory research
Metrics
H-Index
i10 Index
Citation Counts
23
41
1,920
* Total H IndexRankings
Ranking Based On Selection: 25
Quantitative Genetics
Evolutionary Biology
Systems Biology
Plant Ecophysiology
Climate Change
Metrics
H-Index
i10 Index
Citation Counts
22
29
1,639
John C Wingfield
Metrics
H-Index
i10-Index
Citation Counts
142
508
73,508
Environmental endocrinology
Alan Hastings
Metrics
H-Index
i10-Index
Citation Counts
102
284
44,877
Theoretical Ecology
Population Biology
Mathematical Biology
Conservation Biology
Bioeconomics
Qi Zhang
Metrics
H-Index
i10-Index
Citation Counts
89
246
36,431
Aerosol science
atmospheric chemistry
environmental toxicology
analytical chemistry
Mark Lubell
Metrics
H-Index
i10-Index
Citation Counts
73
139
19,322
environmental policy
collective action
social networks
Robert J Hijmans
Metrics
H-Index
i10-Index
Citation Counts
70
139
98,920
Agriculture
Biodiversity
Climate
Data science
Ecology
Joan Ogden
Metrics
H-Index
i10-Index
Citation Counts
49
108
13,783
Energy
alterrnative fuels
hydrogen
fuel cells
Edwin Grosholz
Metrics
H-Index
i10-Index
Citation Counts
47
91
13,648
Benthic Marine Ecology
Biological Invasions
Climate Change
Masoud Kayhanian
Metrics
H-Index
i10-Index
Citation Counts
47
77
8,379
Environmental Engineering
surface water quality
water reuse
energy recovery from waste
Robert Rice
Metrics
H-Index
i10-Index
Citation Counts
46
144
11,265
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Andrew Whitehead
Metrics
H-Index
i10-Index
Citation Counts
42
65
9,122
environmental genomics
ecological genomics
evolutionary genomics
population genomics
ecotoxicology
James Beaumont
Metrics
H-Index
i10-Index
Citation Counts
38
56
5,379
Environmental and occupational epidemiology
cancer
reproductive outcomes
and injury epidemiology
epidemiologic methods
J Heinrich Lieth
Metrics
H-Index
i10-Index
Citation Counts
35
68
3,771
Crop modelling
Controlled Environment Agriculture
Greenhouse automation
Marissa L Baskett
Metrics
H-Index
i10-Index
Citation Counts
34
56
3,671
Theoretical population biology
conservation biology
marine ecology
evolutionary ecology
Michele A La Merrill
Metrics
H-Index
i10-Index
Citation Counts
32
53
4,592
Pramod Pandey
Metrics
H-Index
i10-Index
Citation Counts
30
65
3,376
Water
waste
renewable energy
contamination
food
Samuel Sandoval Solis
Metrics
H-Index
i10-Index
Citation Counts
29
63
3,151
Water Resources Planning and Management
Isaya Kisekka
Metrics
H-Index
i10-Index
Citation Counts
28
74
2,893
Hydrology
Irrigation
Agricultural Water Management
Agrohydrology
Climate Smart Agriculture
Majdi Abou Najm
Metrics
H-Index
i10-Index
Citation Counts
28
57
2,458
Water Resources Management
Hydrology
waste management
vadose zone
Karen Shapiro
Metrics
H-Index
i10-Index
Citation Counts
27
49
2,346
Waterborne zoonoses
wildlife health
public health
parasitology
Erwan Monier
Metrics
H-Index
i10-Index
Citation Counts
26
44
2,846
Earth system modeling
climate impacts
air quality and health
biogeochemistry
multisector dynamics
Helene Margolis
Metrics
H-Index
i10-Index
Citation Counts
26
29
8,906
Chronic disease and environmental epidemiology
climate change
vulnerable populations
Leslie M Roche
Metrics
H-Index
i10-Index
Citation Counts
23
41
1,920
rangelands
grazinglands
drought
climate change adaptation
participatory research
Daniel Runcie
Metrics
H-Index
i10-Index
Citation Counts
22
29
1,639
Quantitative Genetics
Evolutionary Biology
Systems Biology
Plant Ecophysiology
Climate Change