(Table T1) Initial water quality conditions for bioassay experiments during Nathaniel B. Palmer cruise NBP09-01 in the Amundsen Sea ...

• Main Authors: Mills, Matthew M, Alderkamp, Anne-Carlijn, Thuróczy, Charles-Edouard, van Dijken, Gert L, Laan, Patrick, de Baar, Hein J W, Arrigo, Kevin R
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: Event label; Latitude of event; Longitude of event; Experiment; Area/locality; DEPTH, water; Ice coverage; Chlorophyll a; Chlorophyll a, standard deviation; Maximum photochemical quantum yield of photosystem II; Fucoxanthin; Fucoxanthin, standard deviation; 19-Hexanoyloxyfucoxanthin; 19-Hexanoyloxyfucoxanthin, standard deviation; Nitrate; Phosphate; Carbon, organic, particulate; Nitrogen, organic, particulate; Iron, dissolved; Iron, dissolved, standard deviation; Iron, dissolvable; Iron, dissolvable, standard deviation; -; Standard error; Go-Flo bottles; High Performance Liquid Chromatography HPLC; NBP0901; Nathaniel B. Palmer; International Polar Year 2007-2008 IPY; Amundsen Sea; Antarc*; Antarctica; International Polar Year; IPY; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.817064; https://doi.pangaea.de/10.1594/PANGAEA.817064

Nutrient addition experiments were performed during the austral summer in the Amundsen Sea (Southern Ocean) to investigate the availability of organically bound iron (Fe) to the phytoplankton communities, as well as assess their response to Fe amendment. Changes in autotrophic biomass, pigment concentration, maximum photochemical efficiency of photosystem II, and nutrient concentration were recorded in response to the addition of dissolved free Fe (DFe) and Fe bound to different model ligands. Analysis of pigment concentrations indicated that the autotrophic community was dominated by the prymnesiophyte Phaeocystis antarctica throughout most of the Amundsen Sea, although diatoms dominated in two experiments conducted in the marginal ice zone. Few significant differences in bulk community biomass (particulate organic carbon, nitrogen, and chlorophyll a) were observed, relative to the controls, in treatments with Fe added alone or bound to the ligand phytic acid. In contrast, when Fe was bound to the ligand ... : Note that positions given in the text do not coincide entirely with positions given in the map (Fig. 1 of article). Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...