Repeated size measurements and mortality records for 9155 trees.

Source: R/tree.R

A dataset containing repeated size measurements and mortality records for 9155 trees in 15 mapped forest stands located in Mount Rainier National Park, WA, USA. These stands are part of the Pacific Northwest Permanent Sample Plot Network (http://pnwpsp.forestry.oregonstate.edu/). Each row represents a single measurement of a single tree and a determination of whether it was alive or dead. PLEASE NOTE: the mortality data in the mort column were randomly generated for the purposes of demonstrating functions in this package and should not be used for real analysis. Although mortality data are collected in these stands, mortality rates are extremely low and therefore the real mortality data could not be used for demonstrating the mortality model function in this package

tree

Format

A data frame with 60114 rows and 7 variables:

tree_id

unique identification code of the tree

stand_id

name of stand in which tree is located

tag

unique tag number of the tree

species

species identity of tree as a four letter code

year

year when measurement was taken

dbh

diameter at breast height of the tree at the time of measurement, in cm

mort

tree mortality status with 1 meaning dead and 0 meaning alive

Source

Data are available from the Pacific Northwest Permanent Sample Plot Network on request http://pnwpsp.forestry.oregonstate.edu/data