See our research guides for these disciplines also.
This guide focuses on the science of the environment. See these guides for greater emphasis on environmental policy and studies.
We also have a guide for Climate and Atmospheric Science.
There are many discipline-specific databases relevant to Environmental Science. See specific guides above. Examples: Biological Abstracts (Biology), GeoRef (Geology), SciFinder Scholar (Chemistry, Registration for SciFinder).
These below are major databases that cover many environmental science disciplines.
Global Environment: Water, Air, and Geochemical Cycles by 
Hydrological Changes and Estuarine Dynamics by 
Handbook of Chemical Mass Transport in the Environment by
