During which season would an ecologist expect a temperate lake to demonstrate "turnover"?

Question

Quizplus · Accepted Answer

Turnover in a temperate lake happens twice a year, during the spring and fall. During the spring, as the ice melts, the surface water warms and becomes denser, sinking to the bottom and mixing with the cooler water. In the fall, the opposite occurs, the surface water cools, and becomes denser, sinking to the bottom and mixing with the warmer water.

During Which Season Would an Ecologist Expect a Temperate Lake