corkoak: Tree-level cork biomass data for Oak trees in Portugal

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Tree-level cork biomass data for Oak trees in Portugal

Description

Measurements of cork weight in Quercus suber (Oak) trees in Portugal.

Usage

corkoak

Format

tree

A correlative number for each sample tree.

csc

is tree circumference at 1.3 m outside bark, in cm.

cbc

is tree circumference at 1.3 m under bark, in cm.

bt

bark thickness, in cm.

hdeb

is debarking height, in m.

hblc

height to base of live crown, in m.

nb

number of branches debarked

cr.diam

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) 

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