USDA Forest Service



Boise Aquatic Sciences Lab
322 East Front Street
Suite 401
Boise, ID  83702

(208) 373-4340
(208) 373-4391 (FAX)

United States Department of Agriculture Forest Service.

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Wildfire and Native Fish: Issues of Forest Health and Conservation of Sensitive Species

B.E. Rieman, J.C. Clayton

US Forest Service, Rocky Mountain Research Station
316 E. Myrtle Street
Boise, Idaho 83702


Issues related to forest health and the threat of larger, more destructive wildfires have led to major new initiatives to restructure and recompose forest communities in the western United States. Proposed solutions will depend, in part, on silvicultural treatments and prescribed burning. Large fires can produce dramatic changes in aquatic systems, including altered sediment and flow regimes, fish mortality, and even local extinctions. Responses of salmonid populations to large disturbances such as fire indicate that complexity and spatial diversity of habitats are important to the resilience and persistence of populations. Some populations retain the ecological diversity necessary to persist in the face of large fires, and natural events such as wildfire have been important in creating and maintaining habitat diversity. Although timber harvest and fire can precipitate similar changes in watershed processes, we do not necessarily expect the physical and ecological consequences of large fires and timber harvest to be the same. We agree that healthy forests are fundamental to healthy aquatic ecosystems. In their haste to restore unhealthy forests, however, managers must take care to avoid simplistic solutions that compound problems already present in the management of aquatic ecosystems and native fishes. Management to restore ecological structure, composition, and process is largely experimental and potentially risky. We propose the the mosaic of conditions in both terrestrial and aquatic systems provides an opportunity to learn and adapt new management without placing key remnant aquatic habitats and populations at risk.

Fisheries 22(11):6-15 1997


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USDA Forest Service - RMRS - Boise Aquatic Sciences Lab
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