- Ecology 5
- Freshwater & Marine Ecology 3
- Plant Physiology 3
- Plant Sciences 3
- Atmospheric Protection/Air Quality Control/Air Pollution 1
- Biodiversity 1
- Climate Change/Climate Change Impacts 1
- Conservation Biology/Ecology 1
- Ecotoxicology 1
- Environment, general 1
- Environmental Chemistry 1
- Environmental Health 1
- Geoecology/Natural Processes 1
- Microbial Ecology 1
- Microbiology 1
- Nature Conservation 1
- Optics, Lasers, Photonics, Optical Devices 1
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 1
- Water Quality/Water Pollution 1