Seawater carbonate chemistry and carbon and nitrogen allocation strategy in Posidonia oceanica ...

• Main Authors: Scartazza, Andrea, Moscatello, Stefano, Gavrichkova, Olga, Buia, Maria-Cristina, Lauteri, Marco, Battistelli, Alberto, Lorenti, Maurizio, Garrard, Samantha Laird, Calfapietra, Carlo, Brugnoli, Enrico
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Benthos; Biomass/Abundance/Elemental composition; CO2 vent; Coast and continental shelf; Field observation; Mediterranean Sea; Plantae; Posidonia oceanica; Seagrass; Single species; Temperate; Tracheophyta; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Replicate; Location; Starch; Starch, standard error; Sucrose per dry mass; Sucrose, standard error; Carbohydrates, non structural; Carbohydrates, non structural, standard error; Lignin per dry mass; Lignin, standar error; Holocellulose per dry mass; Holocellulose, standard error; δ13C; δ13C, standard error; Proteins, soluble; Proteins, soluble, standard error; Proteins, total; Proteins, total, standard error; Glutamic acid per dry mass; Glutamic acid, standard error; Glutamine per dry mass; Glutamine per dry mass, standard error; Asparagine per dry mass; Asparagine per dry mass, standard error; Nitrogen, per dry mass; Nitrogen content per dry mass, standard error; δ15N; δ15N, standard error; Shoot density; Shoot density, standard error; Carbon; Carbon, standard error; Nitrogen, total; Laird; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.890444; https://doi.pangaea.de/10.1594/PANGAEA.890444

Rising atmospheric CO2 causes ocean acidification that represents one of the major ecological threats for marine biota. We tested the hypothesis that long-term exposure to increased CO2 level and acidification in a natural CO2 vent system alters carbon (C) and nitrogen (N) metabolism in Posidonia oceanica L. (Delile), affecting its resilience, or capability to restore the physiological homeostasis, and the nutritional quality of organic matter available for grazers. Seawater acidification decreased the C to N ratio in P. oceanica tissues and increased grazing rate, shoot density, leaf proteins and asparagine accumulation in rhizomes, while the maximum photochemical efficiency of photosystem II was unaffected. The 13C-dilution in both structural and non-structural C metabolites in the acidified site indicated quali-quantitative changes of C source and/or increased isotopic fractionation during C uptake and carboxylation associated with the higher CO2 level. The decreased C:N ratio in the acidified site ... : Supplement to: Scartazza, Andrea; Moscatello, Stefano; Gavrichkova, Olga; Buia, Maria-Cristina; Lauteri, Marco; Battistelli, Alberto; Lorenti, Maurizio; Garrard, Samantha Laird; Calfapietra, Carlo; Brugnoli, Enrico (2017): Carbon and nitrogen allocation strategy in Posidonia oceanica is altered by seawater acidification. Science of the Total Environment, 607-608, 954-964 ...