Ponies play a crucial role in the area's ecology by eating vast amounts of vegetation and preventing the landscape turning into a wilderness. |
From ecology and demography we know that population replacement can be relatively rapid. |
The continuous monitoring of the lake ecology reveals far-reaching changes in its environment. |
Amidst this apparent uniformity, however, there is a variety of reproductive behaviours, ecologies, and physiologies. |
The insertion of mega-brand convenience stores like these into fragile local business ecologies will be a powerful diagnostic for their health. |
We desperately need more research to understand the effects of broadcasts on both the national and local theatre ecologies. |