Ecosystems Dynamics & Assessment : Current Conditions (Spring 2017)

Ecosystem Shift in Thermal Habitat

Temperature affects the behavior and physiology of marine organisms, thus it is a key determinant of habitat within the ecosystem.  The area of cold water habitats (1-4°C) show no time series trend despite extremely low values in recent years. Cold water habitats in 2016 were approximately 5,000 km2 (2016 value marked over the time series with dashed red line, linear trend shown with blue line, regression model significance shown in upper left). Cool water habitats (5-15°C) show a negative trend over time declining on the order of 531 km2 yr-1, which is matched by a corresponding increase in warm water habitats (16-27°C) at a rate of 545 km2 yr-1.

Cold habitat
Cool habitat
Warm habitat
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(File Modified Apr. 19 2017)