Effect of increasing sea water pCO2 on the northern Atlantic krill species Nyctiphanes couchii ...

• Main Authors: Sperfeld, Erik, Mangor‑Jensen, Anders, Dalpadado, Padmini
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Animalia; Arthropoda; Bottles or small containers/Aquaria <20 L; Coast and continental shelf; Laboratory experiment; Mortality/Survival; North Atlantic; Nyctiphanes couchii; Pelagos; Single species; Temperate; Zooplankton; Species; Figure; Table; Partial pressure of carbon dioxide water at sea surface temperature wet air; Duration, number of days; Survival; Survival rate, standard error; Individuals; Length; Carapace, length; Carapace width; Diameter; Time in days; Time, standard deviation; Growth rate; Growth rate, standard deviation; Salinity; Salinity, standard deviation; Phosphate; Phosphate, standard deviation; Silicate; Silicate, standard deviation; Temperature, water; Temperature, water, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Bicarbonate ion; Bicarbonate ion, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbon dioxide; Carbon dioxide, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; pH; pH, standard deviation; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.837677; https://doi.pangaea.de/10.1594/PANGAEA.837677

Surprisingly little is known about potential effects of ocean acidification on krill of the Northern Hemisphere as ecologically very important food web component. Sub-adult individuals of the northern Atlantic krill species Nyctiphanes couchii (caught at Austevoll near Bergen, Norway, in January 2013) were exposed in the laboratory to four different levels of pCO2 (430, 800, 1,100, and 1,700 µatm) for 5 weeks in order to assess potential changes in a set of biological response variables. Survival decreased and the frequency of moulting-related deaths increased with increasing pCO2. Survival was considerably reduced at relatively high pCO2 of 1,700 µatm and tended to be negatively affected at 1,100 µatm pCO2. However, the experimental results show no significant effects of pCO2 on inter-moult period and growth at pCO2 levels below 1,100 µatm. No differences in length measurements of the carapace and uropod were observed across pCO2 levels, indicating no effect of changing carbonate chemistry on the morphology ... : In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-10-30. ...