Seawater carbonate chemistry and growth, production and nitrogen cycling of Nodularia spumigena ...

• Main Authors: Wannicke, Nicola, Endres, Sonja, Engel, Anja, Grossart, Hans-Peter, Unger, Juliane, Voss, Maren
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: Bacteria; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Cyanobacteria; Growth/Morphology; Laboratory experiment; Laboratory strains; Nodularia spumigena; Not applicable; Other metabolic rates; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Type; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; DATE/TIME; Incubation duration; Treatment; Phosphate; Phosphate, standard deviation; Nitrogen, inorganic, dissolved; Nitrogen, inorganic, dissolved, standard deviation; Chlorophyll a; Chlorophyll a, standard deviation; Bacteria, abundance; Bacteria, abundance, standard deviation; Carbon, organic, dissolved; Carbon, organic, dissolved, standard deviation; Nitrogen, organic, dissolved; Nitrogen, organic, standard deviation; Phosphorus, organic, dissolved; Phosphorus, organic, standard deviation; Salinity; Temperature, technical; Abundance; Abundance, standard deviation; Carbon, organic, particulate; Carbon, organic, particulate, standard deviation; Nitrogen, organic, particulate; Nitrogen, organic, particulate, standard deviation; Phosphorus, organic, particulate; Particulate organic phosphorus, standard deviation; Carbon fixation rate; Carbon fixation rate, standard deviation; Nitrogen fixation rate; Nitrogen fixation rate, standard deviation; Carbon fixation rate, per particulate organic carbon; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.950700; https://doi.pangaea.de/10.1594/PANGAEA.950700

Heterocystous cyanobacteria of the genus Nodularia form extensive blooms in the Baltic Sea and contribute substantially to the total annual primary production. Moreover, they dispense a large fraction of new nitrogen to the ecosystem when inorganic nitrogen concentration in summer is low. Thus, it is of ecological importance to know how Nodularia will react to future environmental changes, in particular to increasing carbon dioxide (CO2) concentrations and what consequences there might arise for cycling of organic matter in the Baltic Sea. Here, we determined carbon (C) and dinitrogen (N2) fixation rates, growth, elemental stoichiometry of particulate organic matter and nitrogen turnover in batch cultures of the heterocystous cyanobacterium Nodularia spumigena under low (median 315 μatm), mid (median 353 μatm), and high (median 548 μatm) CO2 concentrations. Our results demonstrate an overall stimulating effect of rising pCO2 on C and N2 fixation, as well as on cell growth. An increase in pCO2 during ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-11-15. ...