10.1594/PANGAEA.965196Möller, KristofKristofMöller0000-0002-4590-6223Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenThoms, SilkeSilkeThoms0000-0002-0721-711XAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenTillmann, UrbanUrbanTillmann0000-0002-8207-4382Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenKrock, BerndBerndKrockAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenKoch, FlorianFlorianKoch0000-0001-7107-4160Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPeeken, IlkaIlkaPeeken0000-0003-1531-1664Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenMeunier, Cédric LéoCédric LéoMeunier0000-0002-4070-4286Alfred Wegener Institute - Biological Institute HelgolandPANGAEA2024Alexandrium sp.bottom-upGoniodomin AgrowthIntraspecific variabilityLaboratory experimentNitrogenphotophysiologyphycotoxinsType of studyDate/time start, experimentDate/time end, experimentTreatment: nitrogenReplicateTime, incubationAlexandrium pseudogonyaulaxCarbon, organic, particulateNitrogen, organic, particulateGoniodomin AAlexandrium pseudogonyaulax, cell sizeAlexandrium pseudogonyaulax, strainCommentMultiple investigationsVisual identification (VID) of Lugol preserved samplesKept in dark at -20°C on precombusted Gf/f filter; dried for 24 h at 60 °C, then added conc. HCl and dried for 24 h at 60 °C; measured with Elemental analyser, HEKAtech, Euro EA 3000Centrifuged off, solubilized in methanol, spin-filtered; measured with ultra-high-performance liquid chromatography (UHPLC); coupled with triple quadrupole mass spectrometer (TQMS), Waters, Xevo TQ-XS2020-08-17T09:10:00Dataset10.1594/PANGAEA.96519510.1002/lno.125762097 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe effect of different nitrogen sources (N-deplete, NO3-, NH4+, Urea) on the growth response and toxin content of Alexandrium pseudogonyaulax, isolated in 2020 from the Danish Limfjord, were investigated by means of a bottle incubation experiment. The experiment was started on the 18th October 2021 and finished on the 13th December 2021. This dataset contains all data collected within the experiment, including cell counts, cell sizes, goniodomin A toxin contents, particular organic carbon.8.2956.63Thyborøn, Limfjord, Denmark