60 



45 



30 



o 



LU 

 X 



15 



UNCLEANED 

 (CHECK PLOT) 



White pine 



^^^""^^ ".'r and Hem\ock 



— Redcedarana 



10 20 

 YEARS SINCE STUDY BEGAN 



30 



MODERATELY 

 CLEANED 



10 20 

 YEARS SINCE STUDY BEGAN 



30 



HEAVILY 

 CLEANED 



Figure S. — Effect of moder- 

 ate and heavy Gleanings 

 on the height growth of 

 several species (based 

 on the 100 tallest trees 

 per acre of each species) , 

 Upper West Branch study. 



10 20 

 YEARS SINCE STUDY BEGAN 



5 



