Seawater carbonate chemistry and net photosynthesis of seagrass Zostera marina in a brackish water environment ...

• Main Authors: Pajusalu, Liina, Martin, Georg, Põllumäe, Arno, Paalme, Tiina
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Baltic Sea; Benthos; Coast and continental shelf; Field experiment; Light; Mesocosm or benthocosm; Plantae; Primary production/Photosynthesis; Seagrass; Single species; Temperate; Temperature; Tracheophyta; Zostera marina; Type; Species; Registration number of species; Uniform resource locator/link to reference; Experiment duration; Experiment; Partial pressure of carbon dioxide water at sea surface temperature wet air; Net photosynthesis rate, oxygen; Replicates; DATE/TIME; Temperature, water; Irradiance; Salinity; Salinity, standard deviation; Temperature, water, standard deviation; pH; pH, standard deviation; Partial pressure of carbon dioxide, standard deviation; Nitrogen, total; Nitrogen, total, standard deviation; Phosphorus, total; Phosphorus, standard deviation; Phosphate; Phosphate, standard deviation; Nitrate and Nitrite; Nitrate and Nitrite, standard deviation; Carbonate system computation flag; Carbon dioxide; Fugacity of carbon dioxide water at sea surface temperature wet air; Bicarbonate ion; Carbonate ion; Carbon, inorganic, dissolved; Alkalinity, total; Aragonite saturation state; Calcite saturation state; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.879821; https://doi.pangaea.de/10.1594/PANGAEA.879821

Seagrasses are distributed across the globe and their communities may play key roles in the coastal ecosystems. Seagrass meadows are expected to benefit from the increased carbon availability which might be used in photosynthesis in a future high CO2 world. The main aim of this study was to examine the effect of elevated pCO2 on the net photosynthesis of seagrass Zostera marina in a brackish water environment. The short-term mesocosm experiments were conducted in Kõiguste Bay (northern part of Gulf of Riga, the Baltic Sea) in June-July 2013 and 2014. As the levels of pCO2 naturally range from ca. 150 µatm to well above 1000 µatm under summer conditions in Kõiguste Bay we chose to operate in mesocosms with the pCO2 levels of ca. 2000, ca. 1000, and ca. 200 µatm. Additionally, in 2014 the photosynthesis of Z. marina was measured outside of the mesocosm in the natural conditions. In the shallow coastal Baltic Sea seagrass Z. marina lives in a highly variable environment due to seasonality and rapid changes in ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 2017-08-22. ...