The area in which a change from wetlands to nonwetlands occurs The transition zone may be narrow or broad
It includes an eastern or humid subdivision and a western arid one of corresponding temperature comprising the northern Great Plains and the lower slopes of the mountains of the western United States and Mexico
An area where the vegetation composition and structure is intermediate between two associations The transition zone may be small as the associations abruptly change due to a large shift in the landscape, such as a cliff, or it may be large as the physical environment changes gradually Transition zones often are challenges to properly classify and/or map vegetation
The area of laser ablation that changes for the full correction of the central ablation zone optical ablation zone to the original surface depth of the cornea
The seismic discontinuity located in the upper mantle just beneath the asthenosphere and characterized by a marked increase in the velocity of seismic waves