Temperature, salinity, CO2, dissolved inorganic nutrients, plankton stoichiometry of indoor mesocosm experiment 2014 ...

• Main Authors: Paul, Carolin, Sommer, Ulrich, Matthiessen, Birte
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Baltic Sea; Climate change; CO2; grazing; Phytoplankton; warming; DATE/TIME; Day of experiment; Mesocosm label; Treatment temperature description; Treatment partial pressure of carbon dioxide; Temperature, water; Salinity; Carbon dioxide, partial pressure; Nitrate and Nitrite; Ammonium; Nitrogen, total dissolved; Silicate; Oxygen; Carbon, organic, particulate/Nitrogen, organic, particulate ratio; Carbon, organic, particulate/Phosphorus, organic, particulate ratio; Nitrogen, organic, particulate/Phosphorus, organic, particulate ratio; Mesocosm experiment; Biological Impacts of Ocean Acidification BIOACID; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.939014; https://doi.pangaea.de/10.1594/PANGAEA.939014

Previous studies with Baltic Sea phytoplankton combining elevated seawater temperature with CO2 revealed the importance of size trait-based analyses, in particular dividing the plankton in-to edible (> 5 and < 100 µm) and inedible (< 5 and > 100 µm) size classes for mesozoopankton grazers. While the edible phytoplankton responded predominantly negative to warming and the inedible group stayed unaffected or increased, independent from edibility most phyto-plankton groups gained from CO2. Because the ratio between edible and inedible taxa changes profoundly over seasons, we investigated, if community responses can be predicted according to the prevailing composition of edible and inedible groups. We experimentally explored the combined effects of elevated temperatures and CO2 concentrations on a late-summer Baltic Sea community. Total phytoplankton significantly increased in response to elevated CO2 in particu-lar in combination with temperature, driven by a significant gain of the inedible < 5 ...