Individual whole-animal parameters of Polar cod (Boreogadus saida) and Atlantic cod (Gadus morhua) acclimated to ocean acidification and warming conditions, and time series of seawater carbonate chemistry calculated throughout incubation period ...

• Main Authors: Kunz, Kristina Lore, Frickenhaus, Stephan, Hardenberg, Silvia, Torild, Johansen, Leo, Elettra, Pörtner, Hans-Otto, Schmidt, Matthias, Windisch, Heidrun Sigrid, Knust, Rainer, Mark, Felix Christopher
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: Animalia; Behaviour; Boreogadus saida; Chordata; Coast and continental shelf; Containers and aquaria 20-1000 L or < 1 m**2; Gadus morhua; Growth/Morphology; Laboratory experiment; Mortality/Survival; Nekton; Pelagos; Polar; Respiration; Single species; Temperature; Biological Impacts of Ocean Acidification BIOACID; Arctic; Heidrun; Johansen; Sigrid; Silvia; atlantic cod; Climate change; Ocean acidification; polar cod
• Online Access: https://dx.doi.org/10.1594/pangaea.867391; https://doi.pangaea.de/10.1594/PANGAEA.867391

Oceans are experiencing increasing acidification in parallel to a distinct warming trend in consequence of ongoing climate change. Rising seawater temperatures are mediating a northward shift in distribution of Atlantic cod (Gadus morhua), into the habitat of polar cod (Boreogadus saida), that is associated with retreating cold water masses. This study investigates the competitive strength of the co-occurring gadoids under ocean acidification and warming (OAW) scenarios. Therefore, we incubated specimens of both species in individual tanks for 4 months, under different control and projected temperatures (polar cod: 0, 3, 6, 8 °C, Atlantic cod: 3, 8, 12, 16 °C) and PCO2 conditions (390 and 1170 µatm) and monitored growth, feed consumption and standard metabolic rate. Our results revealed distinct temperature effects on both species. While hypercapnia by itself had no effect, combined drivers caused nonsignificant trends. The feed conversion efficiency of normocapnic polar cod was highest at 0 °C, while ... : Supplement to: Kunz, Kristina Lore; Frickenhaus, Stephan; Hardenberg, Silvia; Torild, Johansen; Leo, Elettra; Pörtner, Hans-Otto; Schmidt, Matthias; Windisch, Heidrun Sigrid; Knust, Rainer; Mark, Felix Christopher (2016): New encounters in Arctic waters: a comparison of metabolism and performance of polar cod (Boreogadus saida) and Atlantic cod (Gadus morhua) under ocean acidification and warming. Polar Biology, 39(6), 1137-1153 ...