This can create a monoculture of annual grass that cannot support the wide range of animals once found in the original ecosystem.

Its 19.5 acres are full with collections of plants grouped by their original ecosystem.

With this lack of systematic data, no statistical values for reconstruction of the original ecosystem can be calculated.

This severely impacted the entire lake, destroying much of the original ecosystem.

Constructing additional ski runs in undisturbed areas and building more access roads degrades the original ecosystem.

Only 20% of Veracruz's original ecosystem remains, with 64% transformed by human exploitation.

That's why Gotjawal forest could maintain its original ecosystem generally unaffected by human activity.

For one thing, about half the area of the original ecosystem has been converted to urban areas and farms.

This habitat is almost entirely a consequence of overgrazing; hardly anything of the original ecosystem remains.

Due to the extensive and long-lasting settlement, the original ecosystem on Lakeba has been strongly altered.