Seawater carbonate chemistry and phytoplankton growth and mortality ...

• Main Authors: Ragazzola, Federica, Marchini, Agnese, Adani, Mario, Bordone, Andrea, Castelli, Alberto, Cerrati, Gabriella, Kolzenburg, Regina, Langeneck, Joachim, di Marzo, Carlotta, Nannini, Matteo, Raiteri, Giancarlo, Romanelli, Elisa, Santos, Mar, Vasapollo, Claudio, Pipitone, Carlo, Lombardi, Chiara
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Ellisolandia elongata; Laboratory experiment; Macroalgae; Mediterranean Sea; Plantae; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; Temperate; Temperature; Type; Species; Registration number of species; Uniform resource locator/link to reference; Time point, descriptive; Treatment; Net photosynthesis rate, oxygen; Net photosynthesis rate, standard deviation; Respiration rate, oxygen; Respiration rate, oxygen, standard deviation; Net calcification rate of calcium carbonate, light; Calcification rate, standard deviation; Net calcification rate of calcium carbonate, dark; pH; pH, standard deviation; Temperature, water; Temperature, water, standard deviation; Electric potential, potential difference, electromotive force; Potential difference, standard deviation; Oxygen; Oxygen, standard deviation; Salinity; Salinity, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Nitrogen dioxide; Nitrogen dioxide, standard deviation; Nitrate; Nitrate, standard deviation; Phosphate; Phosphate, standard deviation; Silicate; Silicate, standard deviation; Carbonate system computation flag; Carbon dioxide; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.939993; https://doi.pangaea.de/10.1594/PANGAEA.939993

In coastal marine ecosystems coralline algae often create biogenic reefs. These calcareous algal reefs affect their associated invertebrate communities via diurnal oscillations in photosynthesis, respiration and calcification processes. Little is known about how these biogenic reefs function and how they will be affected by climate change. We investigated the winter response of a Mediterranean intertidal biogenic reef, Ellisolandia elongate exposed in the laboratory to reduced pH conditions (i.e. ambient pH – 0.3, RCP 8.5) together with an extreme heatwave event (+1.4°C for 15 days). Response variables considered both the algal physiology (calcification and photosynthetic rates) and community structure of the associated invertebrates (at taxonomic and functional level). The combination of a reduced pH with a heatwave event caused Ellisolandia elongata to significantly increase photosynthetic activity. The high variability of calcification that occurred during simulated night time conditions, indicates that ... : 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 2022-1-10. ...