gp.d2pith: Ponderosa Pine Distance to Pith Corresponding to gp.rwl
Description
This dataset gives the distance to pith for each series (in mm) that matches the ring widths for gp.rwl
- a dataset of ponderosa pine (Pinus ponderosa) from the Gus Pearson Natural Area (GPNA) in northern Arizona, USA. Data are further described by Biondi and Qeadan (2008) and references therein.format
A data.frame
containing series ids in column 1 (series
) and the distance (in mm) from the innermost ring to the pith of the tree (d2pith
). This can be used together with the ring widths to calculate the area of each ring.source
DendroLab, University of Nevada Reno, USA.
http://dendrolab.org/References
Biondi, F. and Qeadan, F. (2008) A theory-driven approach to tree-ring
standardization: Defining the biological trend from expected basal area
increment. Tree-Ring Research 64(2): 81-96.