| corkoak {datana} | R Documentation |
Tree-level cork biomass data for Oak trees in Portugal.
Description
Measurements of cork weight in sample trees of Quercus suber (Oak) in Portugal.
Usage
corkoak
Format
- tree
A correlative number for each sample tree.
- csc
Circumference at 1.3 m outside bark, in cm.
- cbc
Circumference at 1.3 m under bark, in cm.
- bt
Bark thickness, in cm.
- hdeb
Debarking height, in m.
- hblc
Height to base of live crown, in m.
- nb
number of branches debarked
- crown.d
crown diameter, in m.
- w
total green weight of the stripped cork, in kg
- stratum
Stratum
Source
Data supplied electronically to Prof. Timothy Gregoire (Yale University) by authors accompanied by a note which said "After the article was published we discovered a problem with 2 of the observations so Teresa and I decided it was best just to delete them."
References
- Fonseca TJ, Parresol BR. 2001. A new model for cork weight estimation in northern Portugal with methodology for construction of confidence intervals. Forest Ecology and Management 152(1):131–139.
Examples
data(corkoak)
head(corkoak)