Table 1 List of models tested to explain the relationship between harvesting intensity and changes in structural diversity (FSI-change)
Acronym | Model | Package | Explanation |
|---|---|---|---|
loess | loess | stats | in addition to simply smoothing a curve, the R loess function can be used to impute missing data points |
lm | linear model | stats | lm is used to fit linear models |
glm | generalized linear model | stats | produces a generalized linear model for the relationship between HI and change in structural diversity (FSI) |
gam | generalized additive model | mgcv | produces a generalized additive model for the relationship between HI and change in structural diversity (FSI) |
RF | randomForest | randomForest | implements Breiman’s random forest algorithm for classification and regression (for harvesting classes) |
HC | harvesting classes | No package needed | Harvesting classes for 10%-intervals, referred to the standing volume at NFI2002 to generate boxplots |