- Ecology 6
- Environmental Management 4
- Environment, general 3
- Sustainable Development 3
- Atmospheric Sciences 2
- Environmental Engineering/Biotechnology 2
- Landscape Ecology 2
- Landscape/Regional and Urban Planning 2
- Nature Conservation 2
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- Science, Humanities and Social Sciences, multidisciplinary 2
- Science, multidisciplinary 2
- Applied Ecology 1
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- Behavioral Sciences 1
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- Biodiversity 1
- Cell Biology 1