British Columbia’s Seamounts Are Becoming Uninhabitable

Date: October 1, 2020

Source: Hakai Magazine
Author: Judith Lavoie

In the northeast Pacific, the upper 3,000 meters of water has lost 15 percent of its oxygen over the past 60 years, and the top 500 meters is simultaneously becoming more acidic at an unprecedented rate, a study by Fisheries and Oceans Canada scientists has found.

The changes, which the scientists say are a consequence of climate change, threaten the survival of the black coral, brittle stars, rockfish, and other species that live around the towering seamounts that lie off the British Columbia coast. The scientists say the seamount ecosystem—regarded as an oasis of life in the deep ocean—will be irreversibly changed, and there will likely be local extinctions.

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