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Show EXAMPLE POSSIBLE CLASSIFICATION SYSTEM FOR ENVIRONMENTAL MANAGEMENT Environmental Category Quality Related to Purpose Environmental Attributes to be Monitored and Managed Environment Attachment No. 2 Management Actions ishery, and other components of the biotic system. High level of dissolved oxygen. Exacting tolerances for temperature, trace minerals, pH, toxic chemicals, nutrients, . . . Low silt and organic matter. Prohibit land grading, landfills, vegetative clearir burning, mining, except where environmental review and impact studies prove that stringent measures can keep changes to environmental attributes within tolerances. Domestic water supply, swimming, industrial uses requiring high quality water. High to moderate levels of dissolved oxygen. Moderate temperature fluctuation. Limits on trace minerals, pH, toxic chemicals and nutrients over a range of tolerances related to resource uses. Permit moderate disturbances (prohibited above), but only upon determination of each developments' disturbance factors and contribution to the stream or lake's budget for sediment, etc. Irrigated agriculture, industrial cooling water. Control of dissolved salts and toxic materials. Strict controls on activities that disturb soils and lead to leaching of salts or flow of acidic or otherwise toxic materials from public lands. Perpetuation of full natural biosys-tem-for recreation, education, scientific study. BIOSYSTEM MAINTENANCE Minimum of man-induced changes in species composition, biomass, food chains, habitat conditions, predator-prey relationships, and population dynamics. Perpetuate natural ecosystem processes or manage to compensate. Logging, mining, and construction, etc. normally excluded. Limited modification of biosystem to produce specific goods or services (native range management, selective cutting in mixed hardwoods). Major modification to maximize output of a particular product or use (single species management for com-rcial timber production; primary jement for elk). Minor changes in plant and animal species composition. Minor changes in habitat for preferred species. Some alteration of wildlife populations. Large scale vegetative type conversions. Major change of habitat for preferred species. Alter natural system only when environmental review and impact studies allow full prediction and control over specific changes. Mitigative and corrective measures to be specified in resource management plans for timber, recreation, etc. Intensive uses or developments normally permitted f environmental review and impact studies indicate biosystem losses are offset by value of goods and services. ¦81 |
