Seawater carbonate chemistry and nutrient fluxes during experiments with brittlestar Amphiura filiformis, 2009 ...

• Main Authors: Wood, Hannah, Widdicombe, Stephen, Spicer, John I
• Format: Dataset
• Language: English
• Published: PANGAEA 2009
• Subjects: Amphiura filiformis; Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Echinodermata; Laboratory experiment; North Atlantic; Other studied parameter or process; Single species; Temperate; Experimental treatment; Experiment day; Salinity; Temperature, water; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Carbon, inorganic, dissolved; Nitrite, flux; Nitrate, flux; Ammonium, flux; Silicate, flux; Phosphate, flux; Multi meter, WTW, LF 197; pH meter Mettler Toledo, USA; Nutrient autoanalyzer Bran and Luebbe, AAIII; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.736021; https://doi.pangaea.de/10.1594/PANGAEA.736021

Rising levels of atmospheric carbon dioxide and the concomitant increased uptake of this by the oceans is resulting in hypercapnia-related reduction of ocean pH. Research focussed on the direct effects of these physicochemical changes on marine invertebrates has begun to improve our understanding of impacts at the level of individual physiologies. However, CO2-related impairment of organisms' contribution to ecological or ecosystem processes has barely been addressed. The burrowing ophiuroid Amphiura filiformis, which has a physiology that makes it susceptible to reduced pH, plays a key role in sediment nutrient cycling by mixing and irrigating the sediment, a process known as bioturbation. Here we investigate the role of A. filiformis in modifying nutrient flux rates across the sediment-water boundary and the impact of CO2- related acidification on this process. A 40 day exposure study was conducted under predicted pH scenarios from the years 2100 (pH 7.7) and 2300 (pH 7.3), plus an additional treatment of ... : Supplement to: Wood, Hannah; Widdicombe, Stephen; Spicer, John I (2009): The influence of hypercapnia and the infaunal brittlestar Amphiura filiformis on sediment nutrient flux – will ocean acidification affect nutrient exchange? Biogeosciences, 6(10), 2015-2024 ...