Grenier and Nelson 



Chapter 19 



Inland Habitat Associations in Oregon 



Appendix 2 Variables used to describe stands of mature and old-growth forests on the Siuslaw National Forest, CorvaUis, 

 Oregon. Data were collected using Vegetation Resource and Structure Examination methods, 1990-1993. Note that the 

 1, 2, and 3 assigned to DBH are reversed compared to state lands database. 



SLOPE Slope of the plot 



ELEV Elevation of the plot (meters) 



REM Number of remnant trees (>100 cm d.b.h.) 



CC Canopy closure as a percentage 



C_HT Canopy height (meters) 



DF_DBH3 Average diameter (centimeters) at breast height for dominant (canopy) Douglas-fir 



DF_DBH2 Average diameter (centimeters) at breast height for codominant Douglas-fir 



DF_DBH1 Average diameter (centimeters) at breast height for early-serai (midstory) Douglas-fir 



DF_TPH3 Number of dominant Douglas-fir per hectare 



DF_TPH2 Number of codominant Douglas-fir per hectare 



DF_TPH1 Number of early-serai (midstory) Douglas-fir per hectare 



WH_DBH3 Average diameter (centimeters) at breast height for dominant western hemlock 



WH_DBH2 Average diameter (centimeters) at breast height for codominant western hemlock 



WH_DBH 1 Average diameter (centimeters) at breast height for early-serai (midstory) western hemlock 



WH_TPH3 Number of dominant western hemlock per hectare 



WHJTPH2 Number of codominant western hemlock per hectare 



WH_TPH1 Number of early-serai (midstory) western hemlock per hectare 



RC_DBH3 Average diameter (centimeters) at breast height for dominant red cedar 



RC_DBH2 Average diameter (centimeters) at breast height for codominant red cedar 



RC_DBH1 Average diameter (centimeters) at breast height for early-serai (midstory) red cedar 



RCJTPH3 Number of dominant red cedar per hectare 



RC_TPH2 Number of codominant red cedar per hectare 



RCJTPH1 Number of early-serai (midstory) red cedar per hectare 



DF_81 Number of Douglas-fir per hectare with an average diameter > 81.3 cm at breast height 



STH_40 Number of shade tolerant trees per hectare with an average diameter > 40.6 cm at breast height 



(midstory) 



USDA Forest Service Gen. Tech. Rep. PSW-152. 1995. 



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