Photophysiolgical parameters of Phaeocystis antarctica after exposure to different Fe and Mn availabilities at the end of the experiment

• Main Authors: Balaguer, Jenna, Thoms, Silke, Trimborn, Scarlett
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: ANT-XXXIII/3; carbon fixation; Connectivity between photosystem II; standard deviation; Drake Passage; Electron transport rate of photosystem II; per cell; Fe:C ratio; Functional absorption cross sections of photosystem II reaction centers; Functional photosystem II reaction centers; growth; In situ pump; iron; ISP; Light saturation point; manganese; Maximum light utilization efficiency; Photochemical quantum yield; photophysiology; Phytoplankton; Polarstern; PS112; PS112_26-1; Southern Ocean; Time constant for electron transfer at Photosystem II; Trace metal; Treatment; Antarc*; Antarctica
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.944461; https://doi.org/10.1594/PANGAEA.944461

Chlorophyll a fluorescence measurements were performed using a Fast Repetition Rate fluorometer (FRRf) coupled to a FastAct Laboratory system (FastOcean PTX, both from Chelsea Technologies Group at the start and the end of the experiment. The excitation wavelengths of the fluorometer's LEDs were 450 nm, 530 nm and 624 nm and the light intensity was automatically adjusted between 0.66–1.2 x 1022 photons m-2 s-1. The parameters were determined after 10 min of dark acclimation.