Hypoxia (reduction in the dissolved oxygen content of water) has dramatic impacts on aquatic ecosystems. At oxygen levels below 30% saturation, species intolerant of hypoxia (e.g. cod) either migrate to other geographic regions or die.

DFO scientists are studying hypoxia on all three of Canada's coasts:

DFO scientists will also explore ecosystem impacts of hypoxia by studying the distribution of various groundfish species in relation to oxygen in the Northeast Pacific, Gulf of St. Lawrence and Scotian Shelf-Gulf of Maine. Commercial fishers on the west coast of Vancouver Island and in the Gulf of St. Lawrence, where oxygen levels below 30% saturation are encountered, will benefit from this research.

DFO scientists working on hypoxia science activities can be found here.