Sardines move north due to ocean warming

http://www.eurekalert.org/pub_releases/2015-02/f-sf-smn021815.php

Public Release: 18-Feb-2015
FECYT - Spanish Foundation for Science and Technology

Sardines, anchovies and mackerels play a crucial role in marine ecosystems, as well as having a high commercial value. However, the warming of waters makes them vanish from their usual seas and migrate north, as confirmed by a pioneering study analysing 57,000 fish censuses from 40 years. The researchers warn that coastal towns dependent on these fishery resources must adapt their economies.

The continued increase in water temperature has altered the structure and functioning of marine ecosystems across the world. The effect has been greater in the North Atlantic, with increases of up to 1.3 ºC (2.3 ºF) in the average temperature over the last 30 years.

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