GEOG422 Chapter Notes - Chapter 9: Pacific Cod, Atlantic Ocean, Deoxygenation
28 Mar 2019
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Document Summary
Marine ecosystems and the coastal communities that depend on them are at risk of significant impacts from extreme events with combinations of very high temperatures, very low oxygen levels, or very acidified conditions. Unusual events projected to become more common and more severe in future. Expose vulnerabilities that can motivate change - including technological innovations to detect, forecast, and mitigate adverse conditions. Ocean conditions vary on a range of timescales - month to month, year to year changes aligning with many biological processes in the ocean. Combination of long term climate change and shorter term variations creates potential for extreme conditions including abrupt increases in temp, acidity, deoxygenation. Recent extreme events in us waters demonstrate these events can be highly disruptive to marine ecosystems - and the communities that depend on them. Two events - 2012 marine heat wave in nw atlantic ocean and 2014-2016 ne.
