What does 'lotic' refer to in terms of water systems?

The term 'lotic' specifically refers to water systems that are characterized by flowing or moving water, such as rivers and streams. This term is used in contrast to 'lentic,' which describes still or standing water bodies like lakes and ponds. The defining feature of lotic systems is the dynamic nature of water movement, which plays a crucial role in aquatic ecosystems by influencing nutrient transport, sediment dynamics, and the overall habitat structure. This movement can greatly affect the types of organisms that inhabit lotic environments, as many species are adapted to thrive in changing water conditions. Understanding the dynamics of lotic systems is important in the fields of ecology and environmental science, especially when studying water quality and habitat conservation.