The project aims to produce a complete inventory of greenhouse gas fluxes and
emissions from a Scottish peatland. Carbon dioxide, methane and nitrous oxide
emissions from the land surface (soil and vegetation) to the atmosphere, losses to
streamwater and degassing will all be considered. The study is carried out at Auchencorth
Moss, Midlothian, with intensive monitoring and measurements being made over a 2-year
period, starting March 2006. The site consists of a patchwork of different vegetation
communities including areas dominated by Calluna or Juncus, grassy hummocks and
hollows and a narrow riparian zone again dominated by Juncus. GHG flux measurements
will be made using chambers covering each vegetation type allowing for both a
comparison between vegetation types and the subsequent scaling up to catchment level
emissions. A flux tower on site provides further data on CO2 net exchange. In addition the
concentrations of GHG in the soil are measured using gas permeable tubing. Other land
based measurements will include water table depth, soil moisture, soil temperature and
soil NO3, NH4 and DOC content. A datalogger is in place adjacent to the stream allowing
for almost continuous measurements of stream temperature, conductivity and height; this
data along with regular measurements of stream solute and dissolved gas concentrations
will be used to estimate both stream gaseous emissions and lateral outputs. Routine
measurements of carbon (DOC, DIC, POC, CO2 and CH4) and nitrogen (NO3, NH4, DON,
N2O) will also be made along the stream length to measure spatial variability
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