SITES AquaNet – Erken Laboratory

SITES AquaNet-Erken Laboratory
Legal name of organisation
Uppsala University
Organisation address

Uppsala University:

P.O. Box 256

SE-751 05 Uppsala



Erken Laboratory:

Norra Malmavägen

761 73 Norrtälje


Primary contact information (PI)

Silke Langenheder:

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Years of Mesocosm Experiments
2017 - present
Description of Facility
  • Open access to national and international researchers.
  • Outdoor, freshwater, lake deployed in an adaptable jetfloat.
  • PE-film enclosures or 20 hard-shell PE enclosures (ø = 0.9m, depth = 1.5m, volume = 700L).
  • In addition, there is access to another set of 20 hard-shell PE enclosures (ø = 1m, depth = 2 m, volume = 1200L).
Controlled Parameters
Research Topics

Advance general understanding in ecology by using modularized experiments across SITES-AquaNet stations (Sweden) or potential collaborators (Sweden, Europe and other continents). Topics: biodiversity-functioning-stability relationships, community ecology, ecological stoichiometry, food web interactions, benthic-pelagic dynamics, biochemistry (carbon cycling), cyanobacterial blooms and global change research. Possibility to combine mechanistic experiments with historical (decadal) lake monitoring data from Lake Erken (e.g., phytoplankton, zooplankton, fish, nutrients and high frequency temperature measurements).

Facility location(s)
59.8354205, 18.6327766
Primary interests
Specialist areas

Apogee SQ-500 (PAR), CTG Trilux fluorometer (chlorophyll-a, phycocyanin and turbidity) and Aanderaa 4531 optode (O2 and temperature) sensors fulltime deployed in each enclosure. CR1000 dataloggers and AM16/32B multiplexers. Possibility to develop Internet interface for collected data. One EXO2 Multiprobe ( one AP-2000 AquaRead Multiprobe ( and one Apogee MQ-500 (PAR) with handheld meters. Laboratory analytical services available in site ( or at Uppsala University (


Capacity in site (Erken Laboratory) up to 60 people with fridges, freezers and cooking facilities (

Source of Information

SITES AquaNet, Water and Spectral:



Photos of experiments/installations
Photo credit: Sophie Wertek
Photo credit: Erik Sahlee