Pelagic and ice-associated microalgae under elevated light and pCO2: Contrasting physiological strategies in two Arctic diatoms

Laboratory experiment on acclimated physiological responses of the Arctic diatoms Thalassiosira hyalina and Melosira arctica towards elevated irradiance (50 vs 300 µmol photons m-2 s-1) and CO2 partial pressures (380 vs. 1000 μatm). Next to growth, elemental composition and biomass production, we as...

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Bibliographic Details
Main Authors: Wolf, Klara K E, Rokitta, Sebastian D, Hoppe, Clara Jule Marie, Rost, Björn
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Climate change
gas-flux measurements
Ice-algae
light intensity
Melosira arctica
Ocean acidification
photophysiology
Thalassiosira hyalina
Arctic
Fram Strait
ice algae
Svalbard
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.947543
https://doi.org/10.1594/PANGAEA.947543
Description
Summary:Laboratory experiment on acclimated physiological responses of the Arctic diatoms Thalassiosira hyalina and Melosira arctica towards elevated irradiance (50 vs 300 µmol photons m-2 s-1) and CO2 partial pressures (380 vs. 1000 μatm). Next to growth, elemental composition and biomass production, we assessed detailed photophysiological responses through fluorometry and gas-flux measurements, including respiration and carbon acquisition. Both algal cultures were isolated from the field within 2 years before the experiment, T.hyalina in Kongsjorden, Svalbard, and M.arctica in the Fram Strait close to Svalbard.

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