Ecosystem stressors are "out of the ordinary" natural and unnatural inputs to the system that disturb the controlling factors, structure, and processes in the ecosystem. Stressors produce potentially large-scale effects on the natural spatial and temporal dynamics of the system.
List of non-natural ecosystem stressors in the Columbia River system:
List of natural ecosystem stressors in the Columbia River system:
Ronald Thom, Ph.D
Marine Research Operations, PNNL
1529 W. Sequim Bay Rd.
Sequim, WA 98382