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Seawater carbonate chemistry and carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement
Open CC BY V4.0
Dataset
Data for: Seawater carbonate chemistry and carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement
PANGAEA
26/05/2026
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Abstract
A Large-scale mesocosm experiment was conducted in the temperate fjord ecosystem near Bergen, Norway during late spring 2022 to investigate the effects of OAE on biogeochemical processes and organisms under close-to-natural conditions. A non-CO2-equilibrated approach was chosen, simulating OAE with calcium- and silicon-based minerals. A gradient of five OAE levels was achieved by increasing total alkalinity (TA) by 0–600 µmol kg-1. Carbonate chemistry parameters were monitored for the total length of the 53-day experiment. The added TA remained relatively stable over the experimental period and the measured CO2 gas exchange rate was comparable to what would be expected for large oceanic regions. The study and data set offer insights into impacts of non-equilibrated alkalinity enhancement on the carbonate system, air-sea gas exchange and carbon fixation.This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were downloaded from the PANGAEA dataset (see Source). In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2026-05-26.
Details
- Title
- Data for: Seawater carbonate chemistry and carbon fixation of a temperate plankton community in response to calcium- and silicate-based Ocean Alkalinity Enhancement
- Creators
- Julieta Schneider - GEOMAR Helmholtz Centre for Ocean Research KielUlf Riebesell - GEOMAR Helmholtz Centre for Ocean Research KielCharly Moras - Southern Cross UniversityLaura Marín-Samper - Universidad de Las Palmas de Gran CanariaLeila Kittu - GEOMAR Helmholtz Centre for Ocean Research KielJoaquin Ortiz Cortes - GEOMAR Helmholtz Centre for Ocean Research KielKai Georg Schulz - Southern Cross University
- Publisher
- PANGAEA
- Grant note
- AQUACOSM-plus: Network of Leading Ecosystem Scale Experimental AQUAtic MesoCOSM Facilities Connecting Rivers, Lakes, Estuaries and Oceans in Europe and beyond - 871081 / Horizon 2020 of the European Commission (https://doi.org/10.13039/501100007601) OceanNETs: Ocean-based Negative Emission Technologies - 869357 / Horizon 2020 of the European Commission (https://doi.org/10.13039/501100007601)
- Identifiers
- 991013386548602368
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Dataset