Coarse Woody Debris Data

Description

Carbon flux on six pieces of wood.

Usage

data(CWD)

Format

A data frame with 13 observations on the following 8 variables.

sample2

carbon flux measurement for 2nd piece of wood.

sample3

carbon flux measurement for 3rd piece of wood.

sample4

carbon flux measurement for 4th piece of wood.

sample6

carbon flux measurement for 6th piece of wood.

sample7

carbon flux measurement for 7th piece of wood.

sample8

carbon flux measurement for 8th piece of wood.

trend

measurement day (in days from beginning).

time

date of measurement.

Details

Aninfra red gas analyser and a clear chamber sealed to the wood surface were used to measure the flux of carbon out of the wood. Measurements were repeated on CWD samples 13 times from July to November 2011, during the transition into and out of the dry season. The aim was to assess if there was shifts in the CWD respiration in response to the shift in the seasons.

Source

L. M. Rowland, C. Stahl, D. Bonal, P. W. Meir, M. Williams (2012). Seasonal variability in respiration from coarse dead wood in a tropical forest.

Examples

  data("CWD")
  CWD[1:6] <- 100 * CWD[1:6] # scaling (to avoid warning)
  maxstat_test(sample2 + sample3 + sample4 +
               sample6 + sample7 + sample8 ~ trend, data = CWD,
               distribution = approximate(1e5))