boreal {datana}

Spatial coordinates of trees in a boreal forest (Finland).

Description

Tree location of trees from a 8.8ha sample plot established in subarctic old-growth forest located in the Varriostrict nature reserve, northeastern Fennoscandia (67 44 N, 29 34 E), in Finland. The plot was rectangular (180 m × 500 m), but for practical reasons, missing a smaller rectangle (20 m × 100 m) in its south-east corner.

Usage

data(boreal)

Format

The data frame contains six variables as follows:

id

tree id

x

Cartesian position at the X-axis, in m.

y

Cartesian position at the Y-axis, in m.

dbh

Diameter at breast-height, in cm.

height

Total height, in m.

species

Species name.

Source

Data were obtained from the files available at doi:10.6084/m9.figshare.19698352.v1.

References

Pouta P, Kulha N, Kuuluvainen T, Aakala T. 2022. Partitioning of Space Among Trees in an Old-Growth Spruce Forest in Subarctic Fennoscandia. Frontiers in Forests and Global Change 5: 817248. doi:10.3389/ffgc.2022.817248

Examples

data(boreal)    
head(boreal) 
tapply(boreal$dbh,boreal$species,mean)
library(lattice)
histogram(~dbh|species, data=boreal)