Mycklemossen

General, Location, and Contact

Mycklemossen mire site Click to enlarge.

Coordinates: LON: 58.35N, LAT: 12.17E
Elevation: 81 m
Köppen climate classification: marine west-coast (Cfb)
Biome: hemi-boreal
Dominating species: mosses: Sphagnum rebellum L., Sphagnum fallax L., Sphagnum austinii L.
Co-location with other RIs: SITES
SPI: Dr Per Weslien
Hosted by: University of Gothenburg
Data download: since SE-Myc will apply as ICOS station during 2019, there is no data for download available yet.

Mycklemossen (SE-Myc, candidat Class 2 Ecosystem Station) is located in the Skogaryd catchment in south-west Sweden. The vegetation is fairly homogenous across the mire which is made up of a mosaic of drier hummocks and wetter hollows. The hummocks are dominated by hare's-tail cottongrass and dwarf shrubs such as heather/cross-leaved heather and occasionally some pine trees as ′shrubs′ (old and small), whereas the hollows are characterized by different Sphagnum species, mainly S. rubellum, S. fallax and S. austinii, and sedges.

Towards the centre of the mire, conditions are drier and the vegetation is more forest-like, with a sparse small pine trees layer and more dwarf shrubs such as bog bilberry, blueberry and lingonberry.

You are welcome!

ICOS Sweden invites other research groups to use the infrastructure. Please fill in our web form.

Geology and Soil

The soil was classified as an Uderic Haploboroll (USDA) with two diagnostic horizons, a Mollic epipedon and a Cambic horizon.

The clay content increases with depth, 45.1% in 0-30 cm, 57.2% in 60-90 cm and 58.4% in the 60-90 cm layer.

Top soil pH is 6.8 and sub-soil pH 7.0-7.2.

Organic carbon content is 3.4% in the top-soil and 0.6 and 0.0% in the sub-soil layers.

The soil structure was described as strong coarse subangular blocky in the top-soil and strong fine to medium angular blocky and strong coarse angular blocky in the sub-soil layers.

The soil is normally unsaturated to a depth of 2.2 m and this zone is characterized by numerous cracks and biotic macro-pores.

Soil N₂O profile Lanna. Click to enlarge.

Vegetation

The cultivated area of the farm is about 155 ha and the farm is operated without livestock since 1958. Cereal crops as winter wheat, spring barley, and spring oats, as well as oil seed rape (winter or spring) are common crops in the area.

Actual phenocam picture from Lanna. Click to enlarge.

Cabin in Lanna. Click to enlarge.

Vegetation map Lanna. A: Main ICOS field; B: similar management as "A", but different N-fertilizer amounts; C: similar management as "A", but mineral fertilizers only; D: former farm house; E: stream Jungaån; F: small farms with a few deciduous trees, no animals; G: Lanna Research Station Click to enlarge.

Current weather

Please follow this link to get current weather information.

Climate

With a mean annual air temperature of 6.1°C and a mean annual precipitation of 558 mm (data period 1961-1990, SMHI station Lanna) the climate is characterized after Köppen as a Cfb-climate, i.e. humid temperate with mild summers and mild winters.

Actual phenocam picture from Lanna. Click to enlarge.

Climate Diagram Lanna (data period 1961-1990, SMHI station Lanna). The diagram displays monthly averages for temperature and precipitation. When the precipitation curve undercuts the temperature curve, this indicates dry season. When the precipitation curve exceeds the temperature curve, this indicates moist season. Click to enlarge.

Wind rose Lanna. Click to enlarge. Data from 2014-01-01 until 2016-11-20 measured with a sonic anemometer .

Where does the air come from that is measured at 2.6 m height at the tower? Footprint area for July 2014 in Lanna. Each contour line adds 10% contribution starting at the tower (red dot); the background map is an illustration of the vegetation height. Calculation done by N. Kljun, Swansea University. Click to enlarge.

Non-ICOS Measurements

Besides standard ICOS measurements more than 50 other different field trials are carried out at the research station. Topics are amongst others fertilization, pesticides, different soil management, and new varieties.

At present, an experimental setup comprising six 1 ha test plots, each equipped with a CO₂ and CH₄ concentration gradient detection setup, is being operated by Gothenburg University in the field immediately adjacent to the ICOS setup.

For more detailed information please contact Per Weslien.

Aerial view of the ICOS site (circle) with the four soil stations (orange dots). Also shown are the six gradient flux plots (squares). Click to enlarge.

ICOS measurements

All related, continuous, automatic measurements are listed below in alphabetical order. The measurements are carried out either on one of the three small towers, at the earth surface or in the four soil pits. All measurements are carried out within a distance of about 200 m of the igloo.

Variable		Measurement height (m)
air humidity		1.8
	profile	0.35, 0.69, 1.22, 1.88, 2.89
	flux system	2.2
air pressure
air temperature		1.8
	profile	0.35, 0.69, 1.22, 1.88, 2.89
	flux system	2.2
carbon dioxide (CO₂)	profile	0.35, 0.69, 1.22, 1.88, 2.89
	flux system	2.2
ground water level	4x
nitrous oxide (N₂O)	flux system	2.2
PAR	incoming and outgoing	4.27
	diffuse and total incoming	4.27
precipitation		2.0
snow depth
soil heat flux	4x together with each profile	-0.08
soil moisture	4x together with each profile	0.00 to -0.06 (vertical), -0.05, -0.1, -0.3, -0.5
soil temperature	4 profiles	-0.02, -0.05, -0.1, -0.3, -0.5
solar radiation	incoming	4.12
	incoming and outgoing	3.94
sunshine duration		4.27
surface temperature	target temperature
terrestrial radiation	incoming and outgoing	3.94
wind vector	flux system	2.2

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Mycklemossen

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