Publication Date:
2024-03-15
Description:
Beneficial effects of CO2 on photosynthetic organisms will be a key driver of ecosystem change under ocean acidification. Predicting the responses of macroalgal species to ocean acidification is complex, but we demonstrate that the response of assemblages to elevated CO2 are correlated with inorganic carbon physiology. We assessed abundance patterns and a proxy for CO2:HCO3- use (delta 13C values) of macroalgae along a gradient of CO2 at a volcanic seep, and examined how shifts in species abundance at other Mediterranean seeps are related to macroalgal inorganic carbon physiology. Five macroalgal species capable of using both HCO3- and CO2 had greater CO2 use as concentrations increased. These species (and one unable to use HCO3-) increased in abundance with elevated CO2 whereas obligate calcifying species, and non-calcareous macroalgae whose CO2 use did not increase consistently with concentration, declined in abundance. Physiological groupings provide a mechanistic understanding that will aid us in determining which species will benefit from ocean acidification and why.
Keywords:
Acetabularia acetabulum; Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Caulerpa prolifera; Caulerpa racemosa; CO2 vent; Coast and continental shelf; Codium bursa; Community composition and diversity; Coverage; Cystoseira barbarta; Cystoseira brachycarpa; Cystoseira compressa; Cystoseira crinita; Cystoseira foeniculacea; Cystoseira foeniculata; Dictyopteris polypodioides; Dictyota dichotoma; Dilophus fasciola; Entire community; Event label; EXP; Experiment; Field observation; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Halopteris scoparia; Jania rubens; Lipid content; Location; Mass; Mediterranean Sea; OA-ICC; Ocean Acidification International Coordination Centre; Oxygen; Padina pavonica; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Registration number of species; Rocky-shore community; Salinity; Sargassum muticum; Season; Site; Species; Table; Temperate; Temperature, water; Type; Udotea petiolata; Uniform resource locator/link to reference; Vulcano_S1; Vulcano_S2; Vulcano_S3; Years; δ13C; δ13C, standard deviation
Type:
Dataset
Format:
text/tab-separated-values, 15691 data points
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