PANGAEA_995743 Seawater carbonate chemistry and physiological data of the diatom Thalassiosira weissflogii employed in studying the diel effects of ocean acidification Gao, Guang; Qu, Liming; Ge, Jingke; Gao, Kunshan Seawater carbonate chemistry and physiological data of the diatom Thalassiosira weissflogii employed in studying the diel effects of ocean acidification 2026-07-01 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995743 Investigator Guang Gao gaog@hhit.edu.cn Investigator Yan Yang yangyan@xmu.edu.cn Earth Science Type of study Species, unique identification Treatment Growth rate Growth rate Respiration rate, oxygen, per cell Net photosynthesis rate, oxygen, per cell Gross photosynthesis rate, oxygen, per cell Gene abundance pH, total scale Alkalinity, total Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Carbon, inorganic, dissolved Bicarbonate ion Carbonate ion Carbon dioxide Carbonate system computation flag Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Aragonite saturation state Calcite saturation state geoscientificInformation Bottles or small containers/Aquaria (<20 L) Chromista Gene expression (incl. proteomics) Growth/Morphology Heterokontophyta Laboratory experiment Laboratory strains Light Not applicable Ocean acidification Pelagos Phytoplankton Primary production/Photosynthesis Respiration Single species Thalassiosira weissflogii Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Complete OA-ICC Ocean Acidification International Coordination Centre unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 487 data points text/tab-separated-values Gao, Guang; Qu, Liming; Ge, Jingke; Gao, Kunshan (2026): Divergent responses of the diatom Thalassiosira weissflogii to ocean acidification during light and dark periods. Limnology and Oceanography Letters, 11(3), e70128, https://doi.org/10.1002/lol2.70128 Gao, Guang; Qu, Liming; Ge, Jingke; Gao, Kunshan (2026): Diel effects of ocean acidification on diatom [dataset]. Mendeley Data, https://doi.org/10.17632/CJWPPWD3M5.1 Nisumaa, Anne-Marin; Pesant, Stephane; Bellerby, Richard G J; Delille, Bruno; Middelburg, Jack J; Orr, James C; Riebesell, Ulf; Tyrrell, Toby; Wolf-Gladrow, Dieter A; Gattuso, Jean-Pierre (2010): EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification. Earth System Science Data, 2(2), 167-175, https://doi.org/10.5194/essd-2-167-2010 Yang, Yan; Brockmann, Patrick; Galdino, Carolina; Schindler, Uwe; Gazeau, Frédéric (2024): An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal. Earth System Science Data, 16(8), 3771-3780, https://doi.org/10.5194/essd-16-3771-2024 Yang, Yan; Hansson, L; Gattuso, Jean-Pierre (2016): Data compilation on the biological response to ocean acidification: an update. Earth System Science Data, 8(1), 79-87, https://doi.org/10.5194/essd-8-79-2016 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2024): seacarb: seawater carbonate chemistry with R. R package version 3.3.3. https://cran.r-project.org/web/packages/seacarb/index.html

We comparatively investigated the physiological and transcriptional performances of a diatom Thalassiosira weissflogii acclimated to OA (pHt drop of 0.35–0.41) between day and night periods. 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 provided by the author of the related paper (see Related to) to the OA-ICC data curator. 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 2026-07-01. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995743"!

http://mel.xmu.edu.cn/en/ https://cran.r-project.org/web/packages/seacarb/index.html seacarb: seawater carbonate chemistry with R. R package version 3.3.3 https://doi.org/10.1002/lol2.70128 Divergent responses of the diatom Thalassiosira weissflogii to ocean acidification during light and dark periods https://doi.org/10.17632/CJWPPWD3M5.1 Diel effects of ocean acidification on diatom https://doi.org/10.5194/essd-16-3771-2024 An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal https://doi.org/10.5194/essd-2-167-2010 Calculated using seacarb after Nisumaa et al. (2010) https://doi.org/10.5194/essd-2-167-2010 EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification https://doi.org/10.5194/essd-8-79-2016 Data compilation on the biological response to ocean acidification: an update https://www.iaea.org/services/oa-icc/science-and-collaboration/data-access-and-management OA-ICC DIF 9.4 2026-07-01 2026-07-01