CO2 exchange rates determined with closed chamber measurements and cooresponding measurements of temperatures, photosynthetically actiove radiation, and other variables in the Ahlen-Falkenberger Moor peat bog complex from 2009 to 2011 on one specific plot (3 replicates) ....
A data frame with 559 observations on the following 14 variables.
POSIXlt representing the date and time for the measurements
Numeric. Representing IDs of the measurement campaigns, i.e. data sharing on campaign were acquired within short time period (typically one day but sometimes also two consecutive days)
Numeric. Representing the field plot numbers
Character vector giving the kind of chamber measurements. Either "D" for dark (opaque) chamber measurements (i.e., R_eco measurements) or "T" for transparent chamber measurements (i.e., NEE measurements)
Numeric. The estimated flux rate. CO2 exchange in micromole per sqm and second
Numeric. Average photosynthetically active radiation during the flux measurement. Actually represents PPFD (photon flux density) in micromole per sqm and second
Numeric. Average air temperature during chamber measurement in °C
Numeric. Average soil temperature in 2cm depth during chamber measurement in °C
Numeric. Average soil temperature in 5cm depth during chamber measurement in °C
Numeric. Average soil temperature in 10cm depth during chamber measurement in °C
Numeric giving the number of concentration measurements that were available to estimate the flux
Factor with 282 levels giving the duration of measurement in the field, format is "%H:%M"
Numeric. The R2s of the linear regression models that were fit to the concentration data to estimate the fluxes (with
Numeric. The significance of the linear regression models
Beetz S (2014) ???
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