Subject Rankings

Portland State University Subject Rankings 2025

AD Scientific Index (Alper-Doger Scientific Index) offers the broadest spectrum of branches, providing analysis in 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses can be based on indicators such as the H-index, i10-index, and citation count, as well as their values from the last 6 years. As of Oct 19, 2024, rankings are according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in beta. This is due to the exclusion of (931.668) scientists categorized under 'others,' whose profiles cannot yet be determined, edited, or classified. As these fields are updated, the rankings will adjust accordingly. Please keep this in mind. See Also: [University Subject Rankings]

* Total H IndexRankings
Ranking Based On Selection :1
Anne W Thompson
oceanography
microbial ecology
systems biology
microbial diversity
Metrics
H-Index
i10 Index
Citation Counts
16
21
2,047
* Total H IndexRankings
Ranking Based On Selection :2
Robert Perkins
Environmental geochemistry
hydrogeology
sediment geochemistry and paleoceanography
Metrics
H-Index
i10 Index
Citation Counts
11
14
1,352
* Total H IndexRankings
Ranking Based On Selection :3
James Wb Powell
marine mammalogy
marine science education
environmental toxicology
large whale health and population studies
Metrics
H-Index
i10 Index
Citation Counts
4
3
104
* Total H Index Rankings
Rankings
Ranking Based On Selection: 1
Anne W Thompson
Metrics
H-Index
i10-Index
Citation Counts
16
21
2,047
oceanography
microbial ecology
systems biology
microbial diversity
* Total H Index Rankings
Rankings
Ranking Based On Selection: 2
Robert Perkins
Metrics
H-Index
i10-Index
Citation Counts
11
14
1,352
Environmental geochemistry
hydrogeology
sediment geochemistry and paleoceanography
* Total H Index Rankings
Rankings
Ranking Based On Selection: 3
James Wb Powell
Metrics
H-Index
i10-Index
Citation Counts
4
3
104
marine mammalogy
marine science education
environmental toxicology
large whale health and population studies
* Total H Index Rankings
Rankings
Ranking Based On Selection: 4
Carey Sweeney
Metrics
H-Index
i10-Index
Citation Counts
2
1
20