- Zoology 26
- Ecology 23
- Microbiology 22
- Oceanography 22
- Plant Sciences 17
- Freshwater & Marine Ecology 11
- Science, Humanities and Social Sciences, multidisciplinary 11
- Science, multidisciplinary 11
- Marine & Freshwater Sciences 8
- Conservation Biology/Ecology 5
- Animal Ecology 3
- Animal Genetics and Genomics 3
- Evolutionary Biology 3
- Fish & Wildlife Biology & Management 3
- Plant Genetics and Genomics 3
- Water Quality/Water Pollution 3
- Biodiversity 2
- Environmental Law/Policy/Ecojustice 2
- Environmental Management 2
- Hydrology/Water Resources 2