Acidification and iron limitation effects on the photophysiology, growth, carbon production, and cellular pigment and trace metal quotas of the Antarctic phytoplankton Geminigera cryophila and Pseudo‐nitzschia subcurvata ...

• Main Authors: Camoying, Marianne, Thoms, Silke, Geuer, Jana K, Koch, Boris P, Bischof, Kai, Trimborn, Scarlett
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: cryptophytes; culture experiment; diatoms; Iron limitation; Laboratory experiment; Ocean acidification; Southern Ocean; Type of study; Species; Registration number of species; Uniform resource locator/link to reference; Treatment dissolved iron; Treatment partial pressure of carbon dioxide; Phytoplankton growth rate; Growth rate, standard deviation; Carbon, organic, particulate; Carbon, organic, particulate, standard deviation; Production of particulate organic carbon; Particulate organic carbon, production, standard deviation; Nitrogen, organic, particulate; Particulate organic nitrogen production, standard deviation; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Iron, cellular quota; Iron, cellular quota, standard deviation; Iron/Carbon ratio; Iron/Carbon ratio, standard deviation; Manganese/Carbon ratio; Manganese/Carbon ratio, standard deviation; Cobalt/Carbon ratio; Cobalt/Carbon ratio, standard deviation; Copper/Carbon ratio; Copper/Carbon ratio, standard deviation; Zinc/Carbon ratio; Zinc/Carbon ratio, standard deviation; Chlorophyll a; Chlorophyll a, standard deviation; Chlorophyll c2; Chlorophyll c2, standard deviation; Fucoxanthin; Fucoxanthin, standard deviation; Diadinoxanthin; Diadinoxanthin, standard deviation; Alloxanthin; Alloxanthin, standard deviation; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Maximal electron transport rate, standard deviation; Light saturation point; Light saturation point, standard deviation; Antarctic; The Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.943573; https://doi.pangaea.de/10.1594/PANGAEA.943573

Ecophysiological studies looking at the combined effects of ocean acidification (OA) and iron (Fe) availability on Southern Ocean (SO) phytoplankton are still limited. To gain a better mechanistic understanding of how the two ecologically important SO phytoplankton groups cope with OA and Fe limitation, we conducted laboratory incubation experiments on the Antarctic cryptophyte Geminigera cryophila and the diatom Pseudo‐nitzschia subcurvata. Geminigera cryophila (CCMP 2564) was isolated from the Southern Ocean and obtained from Matt Johnson's Laboratory of Protistan Ecology at the Woods Hole Oceanography Institute, United States. Pseudo-nitzschia subcurvata was isolated from the Southern Ocean by P. Assmy during Polarstern expedition ANT- XXI/4. Both species were grown at 2°C under different pCO2 (400 vs. 900 μatm) and Fe (0.6 vs. 1.2 nM) conditions. For P. subcurvata, an additional high pCO2 level was applied (1400 μatm). For both species, growth, photophysiology, cellular quotas of particulate organic ...