- Ecotoxicology 3
- Environmental Chemistry 3
- Environmental Health 3
- Atmospheric Protection/Air Quality Control/Air Pollution 2
- Microbiology 2
- Pollution, general 2
- Public Health 2
- Waste Management/Waste Technology 2
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 2
- Agriculture 1
- Artificial Intelligence 1
- Astronomy, Observations and Techniques 1
- Biogeosciences 1
- Biotechnology 1
- Classical and Quantum Gravitation, Relativity Theory 1
- Computer Imaging, Vision, Pattern Recognition and Graphics 1
- Ecology 1
- Environment, general 1
- Environmental Engineering/Biotechnology 1
- Environmental Management 1