Uppsala University, Box 256, SE-751 05, Uppsala
Linked third parties:
- Swedish Agricultural University (SLU Umeå), 90183 Umeå, Sweden
- Gothenburg University (GU), Box 100, 405 30 Gothenburg
- Sweden Water Research AB (SWR), Ideon Science Park, 223 70 Lund
- Erken Laboratory (UU), Norra Malmavägen 45, 761 73 Norrtälje, Sweden
- Asa Research Station (SLU), 363 94 Lammhult, Sweden
- Bolmen Research Station (SWR), Tiraholm, 314 52 Unnaryd, Sweden
- Skogaryd Research Station (GU), https://www.gu.se/en/earth-sciences/skogaryd-research-catchment-0
- Svartberget Research Station (SLU), Svartberget Research Station, 922 91 Vindeln, Sweden
Description of the infrastructure: SITES AquaNet is a modular infrastructure with mesocosm facilities in lakes connected to 5 field stations (Asa, Bolmen, Erken, Skogaryd, Svartberget) that are part of the Swedish Infrastructure for Ecosystem Science (SITES). SITES AquaNet is coordinated by Uppsala University and the associated partners are the Swedish Agricultural University (SLU), Gothenburg University (GU) and Sweden Water Research (SWR). The unique feature of SITES AquaNet is that it is fully standardized across sites and therefore enables modularized experimental manipulations in lakes along a latitudinal gradient in Sweden. This includes a sensor and data logging system to measure in each mesocosm real-time environmental parameters, such as DO, temperature, photosynthetic active radiation, chlorophyll, phycocyanin and turbidity. The lakes in each respective station (Stortjärn, Erken, Erssjön, Feresjön and Bolmen) vary in local environmental conditions: https://www.fieldsites.se/en-GB/sites-thematic-programs/lakes-in-sites-44856978. This allows to achieve general conclusions on ecological phenomena; particularly how local differences between important variables across sites (e.g., temperature, elevation, nutrients and water colour) mediate the outcomes of experimental manipulations of explanatory predictors for the phenomena.
SITES AquaNet has established protocols to standardize both field and laboratory work. Each station is equipped with field equipment for collection of samples and there is access to cold storage, freezing rooms and laboratory facilities for filtering and extraction of samples for a wide range of analyses.
The Erken Laboratory can also provide 20 1500 L polyethylene enclosures.
- Outdoor, freshwater, deployed in an adaptable jetfloat, placed in the lake Erken close to the campus of the research station.
- 20 hardshell PE enclosures (ø = 0.9 m, depth =1.5 m, volume = 700 l). Possibility to use PE-film enclosures
- Sensor system for a minimum of 16 mesocosms: Agogee SQ-500 sensor for PAR, oxygen optode 4531 sensor (Aandeera) for dissolved oxygen and temperature, Trilux (Chelsea) for chlorophyll a fluorescence, turbidity and phycocyanin fluorescence
Possible manipulations include nutrient and substance additions, shading, food web manipulations, dispersal/species additions
Biodiversity-functioning-stability relationships, community ecology, ecological stoichiometry, food web interactions, benthic-pelagic dynamics, biogeochemistry (e.g., nutrient cycling), land-water-air gas exchange, cyanobacterial blooms and global change research.
Urrutia-Cordero, P., et al. (2021), SITES AquaNet: An open infrastructure for mesocosm experiments with high-frequency sensor monitoring across lakes. Limnol Oceanogr Methods.