24 



Slimy sculpins were most common across the five stream orders sampled being present on 

 2nd through 6th order streams. Torrent sculpins were found at sites on 3rd, 4th, 5th, and 

 6th order streams. Shorthead sculpins were present on 3rd, 4th, and 5th order streams 

 only. 



Benthic Macroinvertebrates 



Benthic macroinvertebrate density ranged from moderate to high at sites where torrent, 

 shorthead, and slimy sculpins were abundant (Figure 10). There was no dramatic decrease 

 in benthic macroinvertebrate density at sites where sculpins were less numerous or not 

 present at all. At sites where sculpins were not present, benthic macroinvertebrate density 

 ranged from low to moderate. 



Algal Density 



Filamentous algae density ranged from uncommon to common at sites where torrent, 

 shorthead and slimy sculpins were abundant (Figure 1 1). As torrent and shorthead 

 abundance decreased, algal density increased. But as slimy sculpin abundance declined, 

 algal density decreased slightly except at sites where slimy sculpins were rare in which case 

 algal density was abundant. Algal density was also abundant at sites where torrent sculpins 

 were rare. At sites where sculpins were not present, Filamentous algae was generally 

 uncommon in abundance or not present. 



