This plant "requires periodic disturbance," however, it is "very sensitive to human impacts," such as trampling.

The law of crises is the law of the inevitable periodic disturbance of the equilibrium of the system and its restoration.

For the time being, however, both her sleep and her job may have to suffer some periodic disturbance.

This snakeroot, for example, requires periodic disturbance such as fire to clear out tall and woody vegetation that grows up around it and blocks the sun.

The plant grows on bare soils, and probably requires periodic disturbance to keep its habitat clear of competing vegetation.

It is adapted to the periodic disturbance which occurs due to wind and erosion in habitat such as dunes.

Popular thought is that the host plants, lupines, require periodic disturbances in order to successfully reproduce.

Ecosystems are dynamic entities-invariably, they are subject to periodic disturbances and are in the process of recovering from some past disturbance.

It commonly grows as single scattered trees or small groves, not in large forests like most other pines, and needs periodic disturbances for seedling establishment.

The term "lunacy", long used to refer to periodic disturbance or epilepsy, came to be synonymous with insanity.