World Scientist and University Rankings 2025
Saudi Arabia Natural Sciences 270 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
Microbial ecology
Environmental Microbiology
Metrics
H-Index
i10 Index
Citation Counts
83
259
22,453
* Total H IndexRankings
Ranking Based On Selection: 2
Plant Ecology
Metrics
H-Index
i10 Index
Citation Counts
78
222
20,297
* Total H IndexRankings
Ranking Based On Selection: 3
Microbiology
Microbial Ecology
Extreme Environments
Metrics
H-Index
i10 Index
Citation Counts
67
159
13,101
* Total H IndexRankings
Ranking Based On Selection: 4
Metrics
H-Index
i10 Index
Citation Counts
62
305
19,478
* Total H IndexRankings
Ranking Based On Selection: 5
Structural Biology
Synthetic Biology
Signal Transduction
Small Angle X-ray Scattering
Bioinformatics
Metrics
H-Index
i10 Index
Citation Counts
56
140
13,745
* Total H IndexRankings
Ranking Based On Selection: 6
Saudi Society for Applied Science
Environmental
Pollution
toxicology
Animal Behavior
Metrics
H-Index
i10 Index
Citation Counts
53
125
7,534
* Total H IndexRankings
Ranking Based On Selection: 7
Environmental Biotechnology
Applied Mycology
Bioremediation
Metrics
H-Index
i10 Index
Citation Counts
52
156
8,343
* Total H IndexRankings
Ranking Based On Selection: 8
• - Rangeland ecology • - Rangeland improvement and restoration • - Rangeland management • - Competition and allelopathy
Metrics
H-Index
i10 Index
Citation Counts
50
134
9,726
* Total H IndexRankings
Ranking Based On Selection: 9
Cancer
Epigenetic
Apoptosis
Cytotoxicity
Metrics
H-Index
i10 Index
Citation Counts
50
167
7,355
* Total H IndexRankings
Ranking Based On Selection: 10
Biological oceanography
microbial ecology
plankton
biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
49
115
7,283
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* Total H IndexRankings
Ranking Based On Selection: 11
Bionanotechnology
Metrics
H-Index
i10 Index
Citation Counts
48
213
8,759
* Total H IndexRankings
Ranking Based On Selection: 12
Bacteriology
Antimicrobial
Bacteria resistance
Metrics
H-Index
i10 Index
Citation Counts
48
167
8,250
* Total H IndexRankings
Ranking Based On Selection: 13
Molecular Biology
GC-MS
HPLC
Antimicrobials
Gene mapping
Metrics
H-Index
i10 Index
Citation Counts
48
162
8,486
* Total H IndexRankings
Ranking Based On Selection: 14
Biological Sciences
Metrics
H-Index
i10 Index
Citation Counts
46
143
6,465
* Total H IndexRankings
Ranking Based On Selection: 15
Botany
Metrics
H-Index
i10 Index
Citation Counts
43
122
9,391
* Total H IndexRankings
Ranking Based On Selection: 16
Plant Physiology
Biomonitoring
Environmental Pollution
Metrics
H-Index
i10 Index
Citation Counts
43
63
6,389
* Total H IndexRankings
Ranking Based On Selection: 17
Phytogeography
Flora
Plant Taxonomy
Vegetation Science
Metrics
H-Index
i10 Index
Citation Counts
42
123
8,931
* Total H IndexRankings
Ranking Based On Selection: 18
Biological activities
Natural products
Medicinal Plants
Metrics
H-Index
i10 Index
Citation Counts
42
111
5,487
* Total H IndexRankings
Ranking Based On Selection: 19
Environment Microbiology
nanotechnology
stem cells
Metrics
H-Index
i10 Index
Citation Counts
40
87
4,830
* Total H IndexRankings
Ranking Based On Selection: 20
Metrics
H-Index
i10 Index
Citation Counts
40
72
4,837
* Total H IndexRankings
Ranking Based On Selection: 21
Corals
Biodiversity
Biogeography
Taxonomy
Scleractinia
Metrics
H-Index
i10 Index
Citation Counts
39
92
5,866
* Total H IndexRankings
Ranking Based On Selection: 22
Developmental Biology
Organoids
Embryonic stem cells
Cloning
EVs
Metrics
H-Index
i10 Index
Citation Counts
38
103
4,101
* Total H IndexRankings
Ranking Based On Selection: 23
Microbial Fuel Cell: Designing and Modifications
Biotransformation
and Carbon Nanomaterial and its
Metrics
H-Index
i10 Index
Citation Counts
38
70
5,110
* Total H IndexRankings
Ranking Based On Selection: 24
Biodiversity
Marine Ecology
Marine Conservation
Ecosystem Management
Pollution
Metrics
H-Index
i10 Index
Citation Counts
38
79
3,830
* Total H IndexRankings
Ranking Based On Selection: 25
Plant Biotechnology
Plant Tissue Culture
Micropropagation
Synthetic seeds
Molecular markers
Metrics
H-Index
i10 Index
Citation Counts
38
114
5,905
Daniele Daffonchio
Metrics
H-Index
i10-Index
Citation Counts
83
259
22,453
Microbial ecology
Environmental Microbiology
Mohammed Alyemeni
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
78
222
20,297
Alexandre Soares Rosado
Metrics
H-Index
i10-Index
Citation Counts
67
159
13,101
Microbiology
Microbial Ecology
Extreme Environments
Khaled AS Al Rasheid
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
62
305
19,478
Stefan Arold
Metrics
H-Index
i10-Index
Citation Counts
56
140
13,745
Structural Biology
Synthetic Biology
Signal Transduction
Small Angle X-ray Scattering
Bioinformatics
May Nasser Bin Jumah
Metrics
H-Index
i10-Index
Citation Counts
53
125
7,534
Saudi Society for Applied Science
Environmental
Pollution
toxicology
Animal Behavior
Fuad Ameen
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
52
156
8,343
Environmental Biotechnology
Applied Mycology
Bioremediation
Abdulaziz Alqarawi
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
50
134
9,726
• - Rangeland ecology • - Rangeland improvement and restoration • - Rangeland management • - Competition and allelopathy
Saad Alkahtani
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
50
167
7,355
Cancer
Epigenetic
Apoptosis
Cytotoxicity
Xosé Anxelu G Morán
Metrics
H-Index
i10-Index
Citation Counts
49
115
7,283
Biological oceanography
microbial ecology
plankton
biogeochemistry
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Mohamed Soliman Elshikh
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
48
213
8,759
Naiyf S Alharbi|Naiyf Sultan Helial Alaloi Alharbi
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
48
167
8,250
Bacteriology
Antimicrobial
Bacteria resistance
Mohammad Javed Ansari
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
48
162
8,486
Molecular Biology
GC-MS
HPLC
Antimicrobials
Gene mapping
Arshad Jamal
Metrics
H-Index
i10-Index
Citation Counts
46
143
6,465
Hesham F Alharby
Metrics
H-Index
i10-Index
Citation Counts
43
122
9,391
Leonard Wijaya
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
43
63
6,389
Plant Physiology
Biomonitoring
Environmental Pollution
Jacob Thomas
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
42
123
8,931
Phytogeography
Flora
Plant Taxonomy
Vegetation Science
Abdelaaty Shahat
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
42
111
5,487
Biological activities
Natural products
Medicinal Plants
Murugan A Munusamy
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
40
87
4,830
Environment Microbiology
nanotechnology
stem cells
Satoshi Habuchi
Metrics
H-Index
i10-Index
Citation Counts
40
72
4,837
Francesca Benzoni
Metrics
H-Index
i10-Index
Citation Counts
39
92
5,866
Corals
Biodiversity
Biogeography
Taxonomy
Scleractinia
Islam M Saadeldin
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
38
103
4,101
Developmental Biology
Organoids
Embryonic stem cells
Cloning
EVs
Njud S Alharbi
Metrics
H-Index
i10-Index
Citation Counts
38
70
5,110
Microbial Fuel Cell: Designing and Modifications
Biotransformation
and Carbon Nanomaterial and its
Susana Almeida Carvalho
Metrics
H-Index
i10-Index
Citation Counts
38
79
3,830
Biodiversity
Marine Ecology
Marine Conservation
Ecosystem Management
Pollution
Mohammad Faisal|M Faisal
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
38
114
5,905
Plant Biotechnology
Plant Tissue Culture
Micropropagation
Synthetic seeds
Molecular markers