Seawater carbonate chemistry and PI-curve parameters, non-photochemical quenching, maximum quantum yield, gross oxygen production and chlorophyll concentrations of Fucus vesiculosus in the Kiel Outdoor Benthocosms ...

• Main Authors: Graiff, Angelika, Bartsch, Inka, Glaser, Karin, Karsten, Ulf
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Benthos; Chromista; Coast and continental shelf; Fucus vesiculosus; Laboratory experiment; Macroalgae; Mesocosm or benthocosm; North Atlantic; Ochrophyta; Primary production/Photosynthesis; Single species; Temperate; Temperature; Event label; Type; Species; Registration number of species; Uniform resource locator/link to reference; Season; Time in days; DATE/TIME; Experiment; Sample code/label; Treatment; Electron transport rate efficiency; Maximal electron transport rate, relative; Light saturation point; Non photochemical quenching, maximum; Photochemical quantum yield; Gross primary production of oxygen; Chlorophyll a; Chlorophyll c2; Comment; Salinity; Salinity, standard deviation; Temperature, water; Temperature, water, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Carbonate system computation flag; pH; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Aragonite saturation state; Calcite saturation state; Mesocosm experiment; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.938760; https://doi.pangaea.de/10.1594/PANGAEA.938760

Shallow coastal marine ecosystems are exposed to intensive warming events in the last decade, threatening keystone macroalgal species such as the bladder wrack (Fucus vesiculosus, Phaeophyceae) in the Baltic Sea. Herein, we experimentally tested in four consecutive benthic mesocosm experiments, if the single and combined impact of elevated seawater temperature (+ 5◦C) and pCO2 (1100 ppm) under natural irradiance conditions seasonally affected the photophysiological performance (i.e., oxygen production, in vivo chlorophyll a fluorescence, energy dissipation pathways and chlorophyll concentration) of Baltic Sea Fucus. Photosynthesis was highest in spring/early summer when water temperature and solar irradiance increases naturally, and was lowest in winter (December to January/February). Temperature had a stronger effect than pCO2 on photosynthetic performance of Fucus in all seasons. In contrast to the expectation that warmer winter conditions might be beneficial, elevated temperature conditions and ... : 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 2021-12-01. ...