Brownification experiment in the Baltic Sea

Published: 12 September 2022| Version 2 | DOI: 10.17632/8ssgdbc7jt.2
Contributors:
Kristian Spilling, Eero Asmala, Noora Haavisto, Lumi Haraguchi, Anne-Mari Lehto, Jonna Piiparinen, Jukka Seppälä, Mari Vanharanta, Anu Vehmaa, Pasi Ylöstalo, Timo Tamminen, Joanna Norkko, Aleksandra Lewandowska, Kaisa Kraft

Description

We carried out a mesocosm experiment over 15 days to test the effect of brownification 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.

Files

Steps to reproduce

The excel sheet has the different categories of variables in different sheets. The units are mentioned and is the same for all data in one sheet.

Institutions

  • Helsingin Yliopisto
  • Suomen ymparistokeskus

Categories

Dissolved Organic Matter, Dissolved Organic Carbon, Bacterioplankton, Plankton Ecology, Baltic Sea, Humus, Net Primary Production

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