Seawater carbonate chemistry and the growth rate of marine diatom Skeletonema marinoi

• Main Authors: Scheinin, Matias, Riebesell, Ulf, Rynearson, T A, Lohbeck, Kai T, Collins, Sinéad
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: Alkalinity; total; Aragonite saturation state; Bicarbonate ion; Biological sample; BIOS; Block; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon; inorganic; dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Gullmar_fjord_2013; Gullmar Fjord; Skagerrak; Sweden; Identification; Laboratory experiment; Mesocosm label; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Ochrophyta; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Phosphate; Phytoplankton; Salinity; Silicate; Single species; Skeletonema marinoi; Species; unique identification; unique identification (Semantic URI); unique identification (URI); Temperate; Temperature; water; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.956080; https://doi.org/10.1594/PANGAEA.956080

Because of their large population sizes and rapid cell division rates, marine microbes have, or can generate, ample variation to fuel evolution over a few weeks or months, and subsequently have the potential to evolve in response to global change. Here we measure evolution in the marine diatom Skeletonema marinoi evolved in a natural plankton community in CO2-enriched mesocosms deployed in situ. Mesocosm enclosures are typically used to study how the species composition and biogeochemistry of marine communities respond to environmental shifts, but have not been used for experimental evolution to date. Using this approach, we detect a large evolutionary response to CO2 enrichment in a focal marine diatom, where population growth rate increased by 1.3-fold in high CO2-evolved lineages. This study opens an exciting new possibility of carrying out in situ evolution experiments to understand how marine microbial communities evolve in response to environmental change.