Environmental Studies
- directional selection
- discharge
- disclimax
- dish-pan experiment
- dispersal
- dispersal mechanism
- displacement activity
- disruptive selection
- dissolved load
- dissolved oxygen level
- distributary channel
- disturbance
- diurnal curve method
- diurnal temperature variation
- divergence
- diversity index
- divide
- Dollos law
- Domin scale
- dominant