Salinity Gradients
Salinity gradients refer to the variation in salt concentration within a body of water. These gradients can occur in oceans, lakes, and estuaries, where freshwater meets saltwater. The difference in salinity affects water density, influencing the movement of water layers and the distribution of marine life.
In coastal areas, salinity gradients are often found where rivers flow into the sea, creating a mix of freshwater and saltwater. This transition zone, known as a estuaries, is crucial for many species, providing a rich habitat and nursery grounds for fish and other aquatic organisms.