Seawater carbonate chemistry and seasonal mesocosm community experiments with warming and acidification treatments in Kiel Outdoor Benthocosms ...

• Main Authors: Wahl, Martin, Werner, Franziska Julie, Buchholz, Björn, Raddatz, Stefanie, Graiff, Angelika, Matthiessen, Birte, Karsten, Ulf, Hiebenthal, Claas, Hamer, Jorin, Ito, Maysa, Gülzow, Elisa, Rilov, Gil, Guy-Haim, Tamar, Yang, Yan
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Asterias rubens; Balanus improvisus; Benthos; Coast and continental shelf; Community composition and diversity; Entire community; Fucus vesiculosus; Growth/Morphology; Laboratory experiment; Mesocosm or benthocosm; Mortality/Survival; Mytilus edulis; North Atlantic; Rocky-shore community; Temperate; Temperature; Type of study; Experiment; Season; Treatment; Replicate; Fucus vesiculosus, length, growth rate; Mytilus edulis, shell length, growth rate; Balanus improvisus, plate, growth rate; Abundance change; Asterias rubens, survival; Alkalinity, total; Carbon, inorganic, dissolved; Temperature, water; Salinity; 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; Calculated using seacarb after Nisumaa et al. 2010; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.959649; https://doi.pangaea.de/10.1594/PANGAEA.959649

The plea for using more “realistic,” community‐level, investigations to assess the ecological impacts of global change has recently intensified. Such experiments are typically more complex, longer, more expensive, and harder to interpret than simple organism‐level benchtop experiments. Are they worth the extra effort? Using outdoor mesocosms, we investigated the effects of ocean warming (OW) and acidification (OA), their combination (OAW), and their natural fluctuations on coastal communities of the western Baltic Sea during all four seasons. These communities are dominated by the perennial and canopy‐forming macrophyte Fucus vesiculosus—an important ecosystem engineer Baltic‐wide. We, additionally, assessed the direct response of organisms to temperature and pH in benchtop experiments, and examined how well organism‐level responses can predict community‐level responses to the dominant driver, OW. OW affected the mesocosm communities substantially stronger than acidification. OW provoked structural and ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-06-08. ...