Seawater carbonate chemistry and growth of Macroalgae, Ulva and Seagrass, Zostera marina ...

• Main Authors: Young, Craig S, Peterson, Bradley J, Gobler, Christopher J
• Format: Dataset
• Language: English
• Published: PANGAEA 2018
• Subjects: Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria <20 L; Chlorophyta; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Seagrass; Single species; Species interaction; Temperate; Tracheophyta; Ulva lactuca; Zostera marina; Type; Species; Registration number of species; Uniform resource locator/link to reference; Treatment; Growth rate; Growth rate, standard error; δ13C; δ13C, standard error; Carbon, per dry mass; Carbon content, per dry mass, standard error; Nitrogen, per dry mass; Nitrogen content, per dry mass, standard error; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard error; Areal productivity; Areal productivity, standard error; Biomass production; Biomass production, standard error; Carbon, organic, per unit sediment mass; Carbon, organic, standard error; pH; pH, standard error; Salinity; Salinity, standard error; Temperature, water; Temperature, water, standard error; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air, standard error; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Bicarbonate ion; Northwest Atlantic; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.908107; https://doi.pangaea.de/10.1594/PANGAEA.908107

This study reports on experiments performed with a Northwest Atlantic species of the macroalgae, Ulva, and the seagrass, Zostera marina, grown under ambient and elevated levels of pCO2, and subjected to competition with each other. When grown individually, elevated pCO2 significantly increased growth rates and productivity of Ulva and Zostera, respectively, beyond control treatments (by threefold and 27%, respectively). For both primary producers, significant declines in tissue δ13C signatures suggested that increased growth and productivity were associated with a shift from use of HCO3− toward CO2 use. When grown under higher pCO2, Zostera experienced significant increases in leaf and rhizome carbon content as well as significant increases in leaf carbon-to-nitrogen ratios, while sediments within which high CO2 Zostera were grown had a significantly higher organic carbon content. When grown in the presence of Ulva; however, above- and below-ground productivity and tissue nitrogen content of Zostera were ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2019-10-24. ...