- Ecology 24
- Freshwater & Marine Ecology 19
- Life Sciences, general 16
- Environmental Management 14
- Marine & Freshwater Sciences 12
- Oceanography 12
- Zoology 9
- Evolutionary Biology 5
- Animal Systematics/Taxonomy/Biogeography 2
- Biological and Physical Anthropology 2
- Entomology 2
- Genetics and Population Dynamics 2
- Paleontology 2
- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Atmospheric Protection/Air Quality Control/Air Pollution 1
- Biomedicine, general 1
- Cytogenetics 1
- Ecotoxicology 1
- Environment, general 1