KOSMOS Bergen 2015 mesocosm study: Environmental data, carbonate chemistry and nutrients

• Main Authors: Spisla, Carsten, Bach, Lennart Thomas, Taucher, Jan, Boxhammer, Tim, Yong, Jaw-Chuen
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Ammonium; Aragonite saturation state; Biogenic silica; Calcite saturation state; Carbon; organic; particulate; particulate/Nitrogen; particulate ratio; particulate/Phosphorus; total; Carbon dioxide (water) partial pressure; Chlorophyceae indeterminata; biomass as carbon; Chlorophyll a; Chrysophyceae indeterminata; Cryptophyceae indeterminata; Cyanophyceae; DATE/TIME; Day of experiment; Diatoms indeterminata; Dinophyceae indeterminata; Event label; Fjord; KOSMOS_2015; KOSMOS_2015_Mesocosm-M1; KOSMOS_2015_Mesocosm-M2; KOSMOS_2015_Mesocosm-M3; KOSMOS_2015_Mesocosm-M4; KOSMOS_2015_Mesocosm-M5; KOSMOS_2015_Mesocosm-M6; KOSMOS_2015_Mesocosm-M7; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.911638; https://doi.org/10.1594/PANGAEA.911638

To evaluate the influence of episodic extreme ocean acidification events in coastal regions, we deployed eight pelagic mesocosms for 53 days in Raunefjord, Norway, and enclosed 60 m³ of local seawater containing a natural plankton community under post-bloom conditions. Four mesocosms were manipulated to simulate extreme pCO2 levels of 2069 µatm while the other four served as untreated controls. To monitor the effects of extreme pCO2 conditions, a variety of physical, ecological, and biogeochemical parameters inside and outside the mesocosms were measured over the course of the experiment in regular intervals.