- Paleontology 17
- Ecology 8
- Freshwater & Marine Ecology 7
- Animal Systematics/Taxonomy/Biogeography 5
- Biodiversity 5
- Biogeosciences 5
- Medicine/Public Health, general 5
- Plant Systematics/Taxonomy/Biogeography 5
- Epidemiology 4
- Health Promotion and Disease Prevention 4
- Internal Medicine 4
- Metabolic Diseases 4
- Public Health 4
- Geochemistry 3
- Geoecology/Natural Processes 3
- Oceanography 3
- Zoology 3
- Biomedicine, general 2
- Developmental Biology 2
- Environment, general 2