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NARRATIVE OUTLINE OF GREENBACK CUTTHROAT TROUT RECOVERY PLAN ~~~~ , 1 Type A greenback populations are those that are considered to be ' genetically pure. Other populations (Type B-C) are believed to have varying degrees of hybridization with non-native trout species. All known Type A populations and their habitats will need to be maintained to ensure the continued health and survival of greenback populations. This will involve regular censusing of populations, restoration and enhancement of habitat, and maintenance of stream barriers. l.l. Conduct nonulation and habitat monitorino. All streams that j contain populations of pure (Type A) greenback trout should be censured at least once every 3 years. Numbers, age and condition of fish, and condition of the habitat should be evaluated. The '~ presence of any non-native species or habitat degradation should be noted and appropriate management action taken. 1.2. Enhance or restore habitat. When necessary and appropriate, restore habitat quality that is below its potential through physical manipulation of the damaged habitat using sound land and water management practices. 1.3. Maintain stream barriers. Stream barriers are essential to prevent invasions of undesirable fish into the habitat of greenback cutthroat trout. Natural barriers should be inspected periodically for their effectiveness and stability. Although natural barriers are strongly preferred, artificial barriers may be constructed when necessary and should be inspected regularly for needed repairs. 1.4. Prevent the introduction of non-native species. It is extremely important to prohibit the introduction of non-native fish into greenback cutthroat trout habitat. Such introductions foster competition and hybridization. Increased public education as described in Objective 4 will help to meet this objective. 21 ' 1