That tree line is now a huge, broad, brush - filled ecozone, an example of what is happening in different places. (scientificamerican.com)
This is because Mexico's topography is highly varied and its geographic situation places it between distinct ecozones. (tripsavvy.com)
To the east, the Lombok Strait separates the three islands from Lombok, and marks the biogeographical division between the fauna of the Indomalayan ecozone and the distinctly different fauna of Australasia. (lembongan-hotels.com)