YCT Multi-state Assessment 



February 10,2003 



Occurrence in Special Land Management Areas 



Of over 7,528 miles of habitats currently occupied by YCT (both forms combined), 

 approximately 4,427 miles (59% of currently occupied habitat) were associated with land 

 administrated by specific Federal agencies. An estimated 764 miles were in designated National 

 Parks; 1,086 miles occurred within designated Forest Service wilderness areas; and, 2,510 miles 

 were within Forest Service road-less areas (including wilderness) (Table 10; Figure 5). Since we 

 did not assess BLM wilderness or road-less areas in this assessment, the estimates of the 

 proportions of habitat currently occupied by YCT within lands managed as wilderness and road- 

 less are slight under-estimates. 



The genetic status breakdown for YCT that occupy habitats on federal lands having special 

 management focus is presented in Table 10. YCT tested as unaltered and those identified to be 

 potentially unaltered occupied almost 2,213 miles of habitat on federal land that are managed as 

 National Parks or Forest Service road-less, including, wilderness areas. This is about 29% of 

 the total occupied YCT habitat. The number of miles occupied by YCT tested as unaltered and 

 those identified to be potentially unaltered for all federal lands was 2,859 miles (38% of 

 currently occupied habitat). Approximately 541 miles (7%) of currently occupied habitats that 

 supported YCT with no evidence of introgression occurred within areas administered by the 

 USDA Forest Service as road-less or by the National Park Service. The amount of occupied 

 habitat within these special management areas with known genetic alteration was 1 54 miles or 

 about 2% of currently occupied habitat. 



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



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

 wilderness), Nafional Parks and within all federal lands combined. 



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