Seawater carbonate chemistry and growth and photosynthetic performance of temperate and Arctic populations of Saccharina latissima ...

• Main Authors: Olischläger, Mark, Iñiguez, Concepcion, Koch, Kristina, Wiencke, Christian, Lopez Gordillo, Francisco Javier
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Arctic; Benthos; Bottles or small containers/Aquaria <20 L; Chromista; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Macroalgae; North Atlantic; Ochrophyta; Other studied parameter or process; Polar; Primary production/Photosynthesis; Saccharina latissima; Single species; Temperate; Temperature; Type of study; Species; Treatment partial pressure of carbon dioxide; Site; Treatment temperature; Chlorophyll c; Chlorophyll c, standard deviation; Chlorophyll a per unit dry mass; Chlorophyll a, standard deviation; Effective quantum yield; Effective quantum yield, standard deviation; D1 protein, relative intensity; D1 protein, relative intensity, standard deviation; Proteins, total; Proteins, total, standard deviation; Rubisco, per dry mass; Rubisco content per dry mass, standard deviation; Rubisco, per protein; Rubisco content per protein, standard deviation; Fucoxanthin; Fucoxanthin, standard deviation; Violaxanthin; Violaxanthin, standard deviation; Antheraxanthin; Antheraxanthin, standard deviation; Zeaxanthin; Zeaxanthin, standard deviation; beta-Carotene; beta-Carotene, standard deviation; De-epoxidation state; De-epoxidation state, standard deviation; Violaxanthin-xanthophyll-cycle pigments; Violaxanthin-xanthophyll-cycle pigments, standard deviation; Arctic Population; Ocean acidification; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.958138; https://doi.pangaea.de/10.1594/PANGAEA.958138

The Arctic population of the kelp Saccharina latissima differs from the Helgoland population in its sensitivity to changing temperature and CO2 levels. The Arctic population does more likely benefit from the upcoming environmental scenario than its Atlantic counterpart. The previous research demonstrated that warming and ocean acidification (OA) affect the biochemical composition of Arctic (Spitsbergen; SP) and cold-temperate (Helgoland; HL) Saccharina latissima differently, suggesting ecotypic differentiation. This study analyses the responses to different partial pressures of CO2 (380, 800, and 1500 µatm pCO2) and temperature levels (SP population: 4, 10 °C; HL population: 10, 17 °C) on the photophysiology (O2 production, pigment composition, D1-protein content) and carbon assimilation [Rubisco content, carbon concentrating mechanisms (CCMs), growth rate] of both ecotypes. Elevated temperatures stimulated O2 production in both populations, and also led to an increase in pigment content and a deactivation ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-04-26. ...