While ocean acidification / hypercapnia reduces the size of echinoplutei (table 1 and figure 2), increased temperature has the opposite effect, resulting in faster growth, larger larvae and skeletons and enhanced metabolism in warmer conditions, up to thermotolerance limits when developmental impairment or failure occurs [14,67]. (rstb.royalsocietypublishing.org)
This leads to loud panting during physical exercise, stridor during rest and slobbering; sleep apnea, hypercapnia and hypochloremia / hypomagnesemia; exercise intolerance, cyanosis and collapse; and choking fits manifested by gagging, retching, vomiting, aerophagia / flatulence and aspiration pneumonia [8 — 12]. (cgejournal.biomedcentral.com)
Evidence from the geologic record is consistent with modeled geochemical distributions of widespread nutrient - induced euxinia during the end - Permian, suggesting H2S toxicity and hypercapnia may have provided the kill mechanism for extinction. (pubs.geoscienceworld.org)