- Atmospheric Protection/Air Quality Control/Air Pollution 4
- Biodiversity 4
- Ecology 4
- Ecotoxicology 4
- Environment, general 4
- Environmental Chemistry 4
- Environmental Health 4
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 4
- Complementary & Alternative Medicine 3
- Biotechnology 2
- Cardiology 2
- Computers and Society 2
- Data Mining and Knowledge Discovery 2
- Information Systems Applications (incl. Internet) 2
- Microbiology 2
- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Agriculture 1
- Applications of Graph Theory and Complex Networks 1
- Applied Microbiology 1