Net Ecosystem Carbon Dioxide Exchange at Semi-Natural and Regenerating Temperate Fens

Authors:
Ross Morrison, Jon Kelvin, Peter Stroh, Susan E. Page, Francine Hughes, Jörg Kaduk, Mike Acreman, Richard Harding,Heiko Balzter

Book:
Proceedings of the 14th International Peat Congress

Venue:
Stockholm

Keywords:
carbon-dioxide, eddy-covariance, managed-fens, net-ecosystem-exchange, restoration

Documentfile:
Morrison et al 2012: Net Ecosystem Carbon Dioxide Exchange at Semi-Natural and Regenerating Temperate Fens

Summary:

Theme X. Peatland carbon budgets and greenhouse gas (GHG) fluxes

SUMMARY

Net ecosystem CO₂ exchange was measured at two managed fens in the East Anglian Fenland region of the East of England (United Kingdom). Eddy covariance measurements were made at a semi-natural fen and a regenerating former arable fen at the Wicken Fen Nature Reserve. Both ecosystems were characterised by significant seasonal variation in gross primary production, ecosystem respiration and net ecosystem CO₂ exchange. The semi-natural site was a net source of CO₂ between late March and December 2009 and a net sink during the same period the following year. The regenerating site was a small net source of CO₂ on an annual basis.