Lake Langtjern

Lake Langtjern (60°37’N; 9°73’E)  is a small and shallow  (lake surface 0.227 km2, mean depth 2 m) humic, acid-sensitive, oligotrophic lake located in central Norway. Langtjern has a small catchment area (4.8 km2, ca. 510-750 m.a.s.l) that is dominated by unproductive pine forest, wetlands and bedrock. 

The ecological monitoring site Langtjern is a forested lake catchment in southeastern Norway at circa 500 to 700m elevation. The catchment has not been disturbed by any direct human interference since early in the 20th century. Therefore, it is well-suited to study natural responses of water chemistry, element cycles and biology to large scale changes in our environment such as deposition of pollutants and climate change. Langtjern has also been a site for investigation of acid deposition effects on water chemistry and biota since the early 1970's.

Since 2010, infrastructure for climate monitoring was installed in inlet, lake, soils and outlet of the catchments. The monitoring produces high-quality data for validation and calibration of lake- and catchment models. The monitoring and research projects at Langtjern have provided data for numerous articles and will be a useful resource for researchers in the future. We are looking forward to fruitful exchanges with the GLEON community to share and interpret the data arising from the high-frequency monitoring of this boreal, humic lake and its catchment. 


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