- Plant Ecology 35
- Biodiversity 34
- Conservation Biology/Ecology 34
- Plant Anatomy/Development 33
- Forestry 19
- Genetics and Population Dynamics 19
- Tree Biology 19
- Developmental Biology 18
- Microbiology 16
- Wood Science & Technology 14
- Biomedical Engineering/Biotechnology 13
- Genetic Engineering 13
- Molecular Medicine 13
- Transgenics 13
- Forestry Management 7
- Genetics and Genomics 7
- Gene Expression 6
- Gene Function 6
- Zoology 4
- Entomology 2