Seawater carbonate chemistry and biological processes during experiments with the spider crab Hyas araneus in Kongsfjorden, Svalbard, 2009 ...

• Main Authors: Zittier, Zora M C, Hirse, Timo, Pörtner, Hans-Otto
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: Date; Experimental treatment; Identification; Salinity; Temperature, water; pH; Carbon, inorganic, dissolved; Partial pressure of carbon dioxide water at sea surface temperature wet air; Hyas araneus, haemolymph, pH; Hyas araneus, haemolymph, total carbon dioxide; Hyas araneus, haemolymph, partial pressure of carbon dioxide; Hyas araneus, haemolymph, partial pressure of carbon dioxide, standard deviation; Hyas araneus, haemolymph, bicarbonate ion; Hyas araneus, haemolymph, bicarbonate ion, standard deviation; Hyas araneus, haemolymph, oxygen content; Hyas araneus, haemolymph, partial pressure of oxygen; Hyas araneus, haemolymph, partial pressure of oxygen, standard deviation; Hyas araneus, haemolymph, lactate; Hyas araneus, haemolymph, lactate, standard deviation; Hyas araneus, righting responce; Hyas araneus, righting responce, standard deviation; pH meter Mettler Toledo, USA; CO2-Analyser Corning; Calculated using CO2SYS; Calculated after Heisler 1986; Oxygen optode, Aanderaa; Calculated; Enzymatic test; European Project on Ocean Acidification EPOCA; Climate change; Kongsfjord*; Kongsfjorden; Ocean acidification; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.755152; https://doi.pangaea.de/10.1594/PANGAEA.755152

With global climate change, ocean warming and acidification occur concomitantly. In this study, we tested the hypothesis that increasing CO2 levels affect the acid-base balance and reduce the activity capacity of the Arctic spider crab Hyas araneus, especially at the limits of thermal tolerance. Crabs were acclimated to projected oceanic CO2 levels for 12 days (today: 380, towards the year 2100: 750 and 1,120 and beyond: 3,000 ?atm) and at two temperatures (1 and 4 °C). Effects of these treatments on the righting response (RR) were determined (1) at acclimation temperatures followed by (2) righting when exposed to an additional acute (15 min) heat stress at 12 °C. Prior to (resting) and after the consecutive stresses of combined righting activity and heat exposure, acid-base status and lactate contents were measured in the haemolymph. Under resting conditions, CO2 caused a decrease in haemolymph pH and an increase in oxygen partial pressure. Despite some buffering via an accumulation of bicarbonate, the ... : Seawater carbonate chemistry in different pCO2 condition tanks during the EPOCA Svalbard campaign, 2009 available at http://doi.pangaea.de/10.1594/PANGAEA.729174 ...