Seawater carbonate chemistry and growth and nutritional value of canopy-forming kelps ...

• Main Authors: Bell, Lauren E, Westphal, Lily, O'Brien, Evan, Toy, Jason A, Damron, Haleigh, Kroeker, Kristy J
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: Benthos; Biomass/Abundance/Elemental composition; Chromista; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Growth/Morphology; Hedophyllum nigripes; Laboratory experiment; Macroalgae; Macrocystis pyrifera; Neoagarum fimbriatum; North Pacific; Ochrophyta; Other studied parameter or process; Single species; Temperate; Temperature; Type of study; Season; Date/time start, experiment; Species; Identification; Replicate; Treatment; Position; Wet mass; Blade length; Blade width; Date; Date/time end, experiment; Surface area; Stipe length; Quality code; Indicator; Comment; Sample type; Mass; δ13C; Carbon; δ15N; Nitrogen; Carbon/Nitrogen ratio; Diameter; Number; Feces, dry, total; Area; Oxygen, dissolved; Oxygen, dissolved, standard deviation; Salinity; Salinity, standard deviation; Pacific; Ocean acidification; Alaska
• Online Access: https://dx.doi.org/10.1594/pangaea.966185; https://doi.pangaea.de/10.1594/PANGAEA.966185

This dataset results from two, month-long global change laboratory experiments conducted in Sitka, Alaska from February 12 to March 18, 2020 (winter experiment) and August 15 to September 16, 2020 (summer experiment). These experiments were used to tease apart the effects of seasonal variation in light availability and nutrients on the response of three high-latitude kelp species (Macrocystis pyrifera, Hedophyllum nigripes, and Neoagarum fimbriatum) to pH and temperature. Experimental controls were designed to approximate current environmental conditions in Sitka Sound, and treatments were based on projected end-of-century scenarios of ocean acidification (OA) and warming (OW) for this region. At the end of the experiments, the investigators assessed the seasonal impact of OW and OA on kelp growth rates, thallus nitrogen content, and carbon acquisition strategy based on thallus δ13C values. Finally, to test whether kelp palatability was impacted by future warming and acidification, tissue of H. nigripes and ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) 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 2024-03-06. ...