bbc0765c-0072-49f5-a019-93bfefd46e26 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T13:25:01 creation ISO 19115 2016 Krill Ocean Acidification Physiology Data bbc0765c-0072-49f5-a019-93bfefd46e26 Antarctic krill (Euphausia superba) have a keystone role in the Southern Ocean, as the primary prey of Antarctic predators. Any decreases in krill abundance could result in a major ecological regime shift, but there is currently limited information on how climate change may affect krill. Increasing anthropogenic carbon dioxide (CO2) emissions are causing ocean acidification, as absorption of atmospheric CO2 in seawater alters ocean chemistry. Ocean acidification increases mortality and negatively affects physiological functioning in some marine invertebrates, and is predicted to occur most rapidly at high latitudes. Here we show that, in the laboratory, adult krill are able to survive, grow, store fat, mature, and maintain respiration rates when exposed to near-future ocean acidification (1000 – 2000 μatm pCO2) for one year. Despite differences in seawater pCO2 incubation conditions, adult krill are able to actively maintain the acid-base balance of their body fluids in near-future pCO2, which enhances their resilience to ocean acidification. {"type": "Polygon", "coordinates": [[[146.67041, -43.45891], [147.791015625, -43.45891], [147.791015625, -42.68629], [146.67041, -42.68629], [146.67041, -43.45891]]]} 146.67041 147.791015625 -43.45891 -42.68629 Euphausia superba Ocean acidification DATA ACCESS - Krill Ocean Acidification Physiology [direct download] documentDigital XLSX ORCID ID documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML ORCID ID documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML