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Published byLeah Bauer
Modified over 2 years ago
Lake Erken field station Sweden Thorsten Blenckner
Lake Erken Lake Erken, dimictic Catchment area (km 2 )141 Lake area (km 2 )24 Mean depth (m)9 Max depth (m)21 Residence time (ys)7 Mean TP (µg/l)27 Mean summer Chl a (µg/l)4
Monitoring programme Manual monitoring (winter monthly, otherwise weekly, , 1993-now): –Temp., Oxygen, Secchi, pH, alk, cond, colour, diss. + part.+total nutrients, Chl a, phytoplankton counts
Monitoring programme Automatic monitoring (Island, hourly, 1988-now): –Weather station: air temperature, global radiation, PAR, wind speed and direction, –Water temperature 1, 2.5 and 14 m –Delayed fluorescence Automatic monitoring (Float, 30 min, 1988-now): –Water temperature every 0.5 m YSI 6920 Sonde (last year): Temp., Cond., DO, Fluor., pH
Delayed fluorescence Surface, 2.5 and 7 m Every 30 min
Monitoring programme Automatic monitoring (Erken inflow and Galten inflow, hourly): –Discharge, water temperature, CDOM (fluorometer) and turbidity (trans- missometer, 660nm)
Data graph from inflows
The Erken Laboratory Thorsten Blenckner. Lake Erken Lake Erken, dimictic Catchment area (km 2 )141 Lake area (km 2 )24 Mean depth (m)9 Max depth (m)21.
Lake Paajarvi (southern Finland, Europe 60º04 N, 25º08 E) Lake Pääjärvi Automated monitoring station southern boreal vegetation zone (airT 3.6ºC, precip.
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