SITES_bård 160701-4

News from Skogaryd

Micrometeorological installations at the Mycklemossen site. Photographer: Leif Klemedtsson. Micrometeorological installations at the Mycklemossen site. Photographer: Leif Klemedtsson.

We are currently working with the program for the 2nd NORDIC ICOS Symposium that will take place in Gothenburg on the 24th-25th of October with focus on “Sources and sinks of greenhouse gases in the Nordic countries”. The mire “Mycklemossen” that is part of the Skogaryd Sites station will apply to be the new ICOS site for University of Gothenburg and the old Lanna site will then be downgraded to an “associated site”. The reason being that the fluxes of N2O at Lanna are low, below the detection limit by the instrumentation used within ICOS, and thus only short turn peak emissions can be detected. ICOS-Sweden did not have any hemi-boreal/temperate mires in their measuring program and the Mycklemossen well represents the mires in the southern parts of Sweden. It has been monitored by SITES since 2013 and the greenhouse gas fluxes has been dramatically affected by the drought events the current years, which resulted in net CO2 emission, low CH4 emissions and high DOC flows in the autumn. Intensive work is now ongoing in upgrading the site to a level 2 ICOS site, and the site will be presented at an excursion at the Symposium in October.

 

Removal of “trenching installations” to separate sources of soil respiration. Photographer: David Allbrand. Removal of “trenching installations” to separate sources of soil respiration. Photographer: David Allbrand.

On the forested drained peat site at Skogaryd, work has started to allow harvest. After clear-cutting, parts of the site will be re-wetted and fluxes of GHG and mercury will continue to be monitored. This site is one of the most well studied afforested drained organic soils in terms of greenhouse gas flux and processes related the flux. The scaffold tower was taken down last year. Now the old “soil installations”, (frames used to separate root/mycorrhiza respiration from soil organic matter respiration) are removed, since they will not be in use when this part of the site is flooded.

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