Today we collected the sediment and placed it in the mesocosm bags. This it was the most difficult part of the mesocosms construction because the sediment sampling was made by a hand grab and we had to work with a temperature of 35oC.
In addition we collected also samples for the biotic (macro and meiofauna) and abiotic parameters (redox potential, granulometry, sulfide, TOC, Chl-a)
To collect all the sediment need it for the 9 mesocosms it took us all day long and then we had to place it very gently and carefully in the mesocosms bags, to prevent the resuspension of the sediment in the mesocosm water.
Happily we succeeded in both tasks and now the mesocosms bags filled with water and sediment are allowed to rest for 48 hours!
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