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Extracellular carbonic anhydrase activity promotes a carbon concentration mec...
Many calcifying organisms utilize metabolic CO2 to generate CaCO3 minerals to harden their shells and skeletons. Carbonic anhydrases are evolutionary ancient enzymes that were... -
Elemental composition of the Southern Ocean key species Phaeocystis antarctic...
An Fe-Mn bottle addition experiment was conducted in the laboratory to investigate the importance of manganese (Mn) next to iron (Fe) for growth, photophysiological adaptation... -
Nitrogen and carbon fixation rates and organic matter concentrations from wat...
This data is part of the BMBF projects CUSCO (Coastal Upwelling Systems in a Changing Ocean) and BioTip subproject Humboldt Tipping. Here we report water column nitrogen... -
Photophysiolgical parameters of Phaeocystis antarctica after exposure to diff...
Chlorophyll a fluorescence measurements were performed using a Fast Repetition Rate fluorometer (FRRf) coupled to a FastAct Laboratory system (FastOcean PTX, both from Chelsea... -
Absolute electron transport rates with increasing irradiance of Phaeocystis a...
At the end of the experiment, electron transport rates irradiance curves were conducted applying 8 irradiances from 0 up to ~400 μmol photons m-2 s-1 for 5 min for each light... -
Concentrations of total dissolved iron and dissolved manganese measured for t...
Total dissolved Fe (dFe) and Mn (dMn) concentrations were determined in the culture medium (without cells). To this end, 100 mL of seawater were filtered through HCl-cleaned... -
Intracellular trace metals content of iron and manganese of Phaeocystis antar...
For determination of the cellular trace metal content, at the end of the experiment 400 mL of water were filtered onto 0.2 μm TMC-cleaned polycarbonate filters (EMD Millipore,... -
Cell growth and Particulate Organic Carbon / Nitrogen content of Phaeocystis ...
Cell counts and POC/PON content of P.antartica for the 4 different treatments were determined at the beginning and at the end of the experiment. The cell density and size were...
