Habitat parameters were assessed qualitatively. The parameters 

 and methods of evaluation were as follows: 



Sculpin Abundance = quantitatively assessed based on catch 

 efficiency using electroshocker: rare (5 sculpin difficult to 

 catch) , uncommon (5 to 10 sculpin caught with concerted effort) , 

 common (10 to 15 sculpin caught with minimal effort) , abundant 

 (15 or more sculpin caught easily) . 



Stream Character = dominant stream character where sculpin were 

 captured, i.e., pool, run, riffle or cascades. Pools were 

 identified as the slow, deep water sections; riffles as the 

 steeper gradient sections with high current velocities and white 

 water; runs as the sections with moderate current velocities but 

 with smooth surface water (typically found at the tail of pools 

 and between riffles) ; cascades as miniature water-falls typically 

 found as water passes over a boulder or some other large 

 structure within the stream channel. 



Habitat Length = length of sample site (M = Meters) . 



Gradient = estimate of percentage of elevation change over 

 distance traveled. 



Substrate Composition = qualitative estimate of percentage of 

 area occupied by silt (less than 1/3 2 inch in diameter) , sand 

 (1/32 to 1/4 inch), gravel (1/4 to 3.0 inches), cobble (3.0 to 

 12.0 inches), boulder (greater than 12.0 inches), and bedrock in 

 the sample reach. 



Rooted Acpaatic Plants = present (yes) or not present (no) . 



Filamentous Algae = qualitative assessment of area and thickness 

 of algal mat; rare (difficult to discern algal mat on substrate) , 

 uncommon (algal mats are patchy) , common (algal mats covering 

 much of substrate but underlying rocks remain discernible) , 

 abundant (algal mat covers entire substrate, filaments long, mat 

 greater than 5 cm in thickness, substrate not discernible under 

 mat) . 



Benthic Macroinvertebrates = quantitative estimate of zoobenthos 

 density on rocks (diameter ranging from 4 to 8 inches) pulled 

 from the water: low (less than 10 organisms) , moderate (20 to 40 

 organisms) , or high (50 or more organisms) . 



Water temperature = temperature at sample site (°F). 



Reproduction = evidence of sculpin reproduction based on presence 

 (yes) or absence (no) of young of the year (YOY) sculpin. 



Discharge = an estimate of the flow at the sample site. 



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