The basis of the marine food web in the Arctic, the phytoplankton, responds to heat waves much differently than to constantly elevated temperatures. This has been found by the first targeted experiments on the topic, which were recently conducted at the Alfred Wegener Institute's AWIPEV Station. The phytoplankton's behavior primarily depends on the cooling phases after or between heat waves, as shown in a study just released in the journal Science Advances.
Source:
phys.org