Patagonian Ice Sheet Ice Sheet resulted in a dramatic release of freshwater to the adjacent ocean, decreasing its salinity and altering its circulation, resulting in significant ecological changes both locally and remotely. Patagonian Ice Sheet The Patagonian Ice Sheet was a large elongated and narrow ice sheet centered in the southern Andes that existed during the Llanquihue glaciation. The ice sheet covered all of Chile south of Puerto Montt plus the western fringes of Argentine Patagonia. The ice sheet extended beyond the crest of the Andes into Argentina, but because of the dryness of the climate it did not reach beyond present-day lakes
Patagonian toothfish sea bass" before settling on "Chilean sea bass". In 1994, the U.S. Food and Drug Administration (FDA) accepted "Chilean Seabass" as an "alternative market name" for Patagonian toothfish, and in 2013 for Antarctic toothfish. In the UK, the approved commercial designations for "D. eleginoides" and "D. mawsoni" are "icefish" and "toothfish". This has created some confusion as there is a genuine "icefish" ("Champsocephalus gunnari") caught in subantarctic waters, which does not resemble toothfish in any way. Patagonian toothfish spawn in deep water (around 1,000m) during the austral winter, producing pelagic eggs and larvae. Larvae switch to a demersal habitat at