- Plant Sciences 5
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- Science, Humanities and Social Sciences, multidisciplinary 4
- Science, multidisciplinary 4
- Environment, general 3
- Forestry 3
- Plant Ecology 3
- Soil Science & Conservation 3
- Environmental Physics 2
- Life Sciences, general 2
- Zoology 2
- Agriculture 1
- Applied Ecology 1
- Biodiversity 1
- Biological and Physical Anthropology 1
- Community & Population Ecology 1
- Environmental Management 1
- Evolutionary Biology 1
- Geoecology/Natural Processes 1
- Hydrology/Water Resources 1