What does thermocline refer to in aquatic environments?

The term thermocline describes a distinct layer in a body of water characterized by a rapid change in temperature with depth. As you move deeper, the temperature typically decreases, and the thermocline marks the boundary between the warmer upper layer of water, known as the epilimnion, and the colder, deeper layer, called the hypolimnion. This sharp temperature gradient is critical because it affects the distribution of aquatic organisms and the movement of nutrients and gases within the water column.

Understanding the thermocline is essential for various ecological and management perspectives. For instance, it can influence the behavior of fish and other aquatic species that may prefer certain temperature ranges, affecting fishing and conservation strategies.