This simulates the effects of herbivory by allowing different background mortality rates for browsed and unbrowsed trees.
Trees killed by this behavior will have a mortality reason code of "natural".
Parameter name | Description |
---|---|
Background Mortality Rate | The proportion of trees that die each year, as a value between 0 and 1. |
Browsed Background Mortality Rate | The proportion of browsed trees that die each year, as a value between 0 and 1. |
Whether or not a tree is browsed is determined by the Random browse behavior. For each tree, if it has not been browsed, that species's Background Mortality Rate parameter is used; if it has been browsed, the species's Browsed Background Mortality Rate parameter is used. A random number is compared to the appropriate rate to decide if the tree dies.
This behavior can be applied to seedlings, saplings, and adults of any species. Any tree species/type combination to which it is applied must also have the Random browse behavior applied.