- Ecology 13
- Zoology 9
- Fish & Wildlife Biology & Management 5
- Hydrology/Water Resources 4
- Plant Sciences 4
- Animal Ecology 3
- Behavioral Sciences 3
- Environmental Management 3
- Nature Conservation 3
- Evolutionary Biology 2
- Urban Ecology 2
- Animal Physiology 1
- Animal Systematics/Taxonomy/Biogeography 1
- Biochemistry, general 1
- Biodiversity 1
- Biomedicine, general 1
- Conservation Biology/Ecology 1
- Economic Geology 1
- Ecotoxicology 1
- Human Physiology 1