Publication Date:
2024-05-24
Description:
Coralline algae, a major calcifying component of coastal shallow water communities, have been shown to be one of the more vulnerable taxonomic groups to ocean acidification (OA). Under OA, the interaction between corallines and epiphytes was previously described as both positive and negative. We hypothesized that the photosynthetic activity and the complex structure of non-calcifying epiphytic algae that grow on corallines ameliorate the chemical microenvironmental conditions around them, providing protection from OA. Using mesocosm and microsensor experiments, we showed that the widespread coralline Ellisolandia elongata is less susceptible to the detrimental effects of OA when covered with non-calcifying epiphytic algae, and its diffusive boundary layer is thicker than when not covered by epiphytes. By modifying the microenvironmental carbonate chemistry, epiphytes, facilitated by OA, create micro-scale shield (and refuge) with more basic conditions that may allow the persistence of corallines associated with them during acidified conditions. Such ecological refugia could also assist corallines under near-future anthropogenic OA conditions.
Keywords:
Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass, ash free dry mass; Biomass, ash free dry mass, standard deviation; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2calc; 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, aquatic; Carbon dioxide, standard deviation; Coast and continental shelf; Distance; Ellisolandia elongata; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Laboratory experiment; Macroalgae; Mediterranean_coast_of_Israel; Mediterranean Sea; Net calcification rate of calcium carbonate; Net photosynthesis rate, oxygen; Net photosynthesis rate, standard deviation; OA-ICC; Ocean Acidification International Coordination Centre; Other; Other studied parameter or process; Oxygen; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Plantae; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Respiration; Respiration rate, oxygen, per dry mass; Respiration rate, oxygen, standard deviation; Rhodophyta; Salinity; Single species; Species; Temperate; Temperature, water; Treatment; Treatment: pH; Type of study
Type:
Dataset
Format:
text/tab-separated-values, 7482 data points
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