Dataset from a mesocosm experiment on brownification in the Baltic Sea.

ABSTRACT: Climate change is projected to cause brownification of some coastal seas due to increased runoff of terrestrially derived organic matter. We carried out a mesocosm experiment over 15 days to test the effect of this on the planktonic ecosystem. The experiment was set up in 2.2 m³ plastic bags moored outside the Tvärminne Zoological Station at the SW coast of Finland. We used four treatments, each with three replicates: control (Contr) without any manipulation; addition of a commercially available organic carbon additive called HuminFeed (Hum; 2 mg L^-1); addition of inorganic nutrients (Nutr; 5.7 µM NH₄ and 0.65µM PO₄); and a final treatment of combined Nutr and Hum (Nutr+Hum) additions. Water samples were taken daily, and measured variables included water transparency, organic and inorganic nutrient pools, chlorophyll a (Chla), primary and bacterial production and particle counts by flow cytometry.

SUBMITTER: Spilling K 

PROVIDER: S-EPMC9747657 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature