The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 5 years. As of Jan 04, 2026, 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 (1.131.911) 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].
Rankings
evolution | genomics | population genetics | ancient DNA | environmental DN
H-Index Metrics
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H-Index153
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i10 Index331
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Citation Counts85,426
Rankings
oxygen | evolution | oceanography | geobiology | biogeochemistr
H-Index Metrics
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H-Index122
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i10 Index268
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Citation Counts69,053
Rankings
lake | lake restoration | biogeochemistry | Water Framework Directiv
H-Index Metrics
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H-Index93
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i10 Index253
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Citation Counts35,775
Rankings
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geochemistry | climate research | non traditional stable isotope
H-Index Metrics
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H-Index80
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i10 Index250
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Citation Counts20,537
Rankings
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bioelectricity | biogeochemistry | microbial ecology | stable isotope
H-Index Metrics
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H-Index60
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i10 Index87
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Citation Counts13,161
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Cohesive sediment | microplastic | coastal wetlands | Arctic fjords | geochronolog
H-Index Metrics
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H-Index52
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i10 Index109
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Citation Counts7,036
Rankings
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Geology | Sedimentology | Dinosaurs | Palaeoclimate | Coastal System
H-Index Metrics
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H-Index47
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i10 Index95
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Citation Counts5,601
Rankings
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Geodesy | Earth Observation | Hydrology-Climate | Data Assimilation | Space Weathe
H-Index Metrics
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H-Index45
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i10 Index83
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Citation Counts5,652
Rankings
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Earth Observation | Land Use Science | Citizen Science | Climate Change | Geographical Machine Learnin
H-Index Metrics
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H-Index44
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i10 Index82
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Citation Counts6,540
Rankings
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