LIST OF TABLES 

 NUMBER PAGE 



1 Sampling dates and physical characteristics of upper 7 

 Big Hole River drainage sampling sections. 



2 Substrate particle size classes and ranges (modified 12 

 from the Wentworth classification in Welch, 1948) . 



3 Mean and range of total length of YOY Arctic grayling, 14 

 brook trout, and mountain whitefish in the upper Big 



Hole River drainage, June 15 to August 30, 1990. 



4 Stomach contents analysis sample composition for the 16 

 Big Hole River and its tributaries, June 19 to August, 



30, 1990. 



5 The Index of Relative Importance (IRI) and its 18 

 components for the 10 most important food items in the 

 stomachs of brook trout in the Big Hole River, June 18 



to August 25, 1990. 



6 The Index of Relative Importance (IRI) and its 19 

 components for the 10 most important food items in the 

 stomachs of rainbow trout in the Big Hole River, 



June 18 to August 35, 1990. 



7 The Index of Relative Importance (IRI) and its 20 

 components for the 10 most important food items in the 

 stomachs of burbot in the Big Hole River, June 



18 to August 25, 1990. 



8 Gastric levage efficiency (by volume) and efficiency 21 

 sample size for brook trout, rainbow trout, and 



burbot in the Big Hole River, June 18 to August 

 25, 1990. 



9 Mean percentage composition for the substrate 22 

 at each of the six surveyed Big Hole River spawning 

 sites. 



10 Coefficients of Determination (R 2 ) for substrate 24 

 composition variables and YOY numbers in the Big Hole 

 River, June to August, 1990. 



11 Total number of Arctic grayling, brook trout, and 27 

 mountain whitefish captured by electrof ishing (and 

 netting) in the Big Hole River, June 15 to August 



30, 1990. 



ill 



