YCT Multi-state Assessment February 10, 2003 



List of Tables 



Table 1. Genetic classes used for assessing genetic status of Yellowstone cutthroat trout in 2001. 

 7 



Table 2. Codes and descriptions used for assessing relative abundance of Yellowstone cutthroat 

 trout in 2001 9 



Table 3. Ranks and descriptions used for assessing genetic risks to designated conservation 

 populations of Yellowstone cutthroat trout in 2001 . Hybridizing species includes any 

 introduced species or subspecies that could potentially hybridize with Yellowstone cutthroat 

 trout 11 



Table 4. Ranks and descriptions of population risks to designated conservation populations of 

 Yellowstone cutthroat trout in 2001 12 



Table 5. Codes and descriptions for conservation activities applied to designate conservation 

 populations of Yellowstone cutthroat trout assessed in 2001 14 



Table 6. Codes and descriptions for management activities that could potentially impact 



designated conservation populations of Yellowstone cutthroat trout assessed in 2001 15 



Table 7. Genetic status for Yellowstone cutthroat trout (both spotting forms combined) by 



stream length (miles) within their historical range as of 2001 19 



Table 8. Miles of habitat currently occupied by Yellowstone cutthroat trout by genetic status and 

 relative abundance for assessment done in 2001 21 



Table 9. Miles (%) of habitats within historical range that are currently occupied by Yellowstone 

 cutthroat trout by relative abundance classes, data source ratings for the abundance 

 determination, and presence of competing species (i.e. non-native trout) 21 



Table 10. Miles of habitat occupied (% of occupied habitat by Federal land catagory) by 

 Yellowstone cutthroat trout in Forest Service designated road-less areas (including 

 wilderness), National Parks and within all federal lands combined 22 



Table 1 1. Miles of habitat occupied (% occupied by Federal land category) by abundance rating 

 for Yellowstone cutthroat trout in Forest Service designated road-less areas (including 

 wilderness). National Parks and within all federal lands 23 



Table 12. Number and miles of designated conservation populations of Yellowstone cutthroat 

 (both spotting forms combined) along with proportions of those populations by number and 

 miles within isolets and meta-populations 27 



Table 13. Ranked risks to designated conservation populations of Yellowstone cutthroat trout 

 (both forms combined) that functioned as "isolets", "meta-populations", and combined by 

 miles of habitat and numbers of conservation populations that conservation populations 

 occupied by risk factor as of 2001. Bold population composite risk scores are weighted 

 scores for temporal variability, population size, demographics, and isolation re-classified 

 into low to high categories (see Methods for details) 30 



Table 14. Number and percentage (based on the 195 conservation populations that were 



evaluated) of Yellowstone cutthroat trout conservation populations that have had various 

 types of conservation, restoration, and management actions implemented to conserve them 

 as of 2001 34 



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