What can result from lake stratification besides changes in temperature?

Lake stratification leads to the formation of distinct thermal layers in the water, which can significantly affect the quality of the water in various ways. The upper layer, or epilimnion, is warmer and typically has higher levels of oxygen due to contact with the atmosphere and photosynthetic activity. In contrast, the deeper layer, or hypolimnion, is colder, denser, and often contains lower oxygen levels, especially if organic matter decomposes at the bottom, consuming oxygen.

As the summer progresses and stratification becomes more pronounced, the lower layer can become anoxic (depleted of oxygen). This lack of oxygen can cause the release of nutrients and toxins from the sediment, leading to reduced water quality. Additionally, the lack of mixing due to stratification can prevent the distribution of oxygen and nutrients throughout the water column, affecting aquatic life and contributing to conditions such as algal blooms.

While enhanced recreational opportunities, increased biodiversity, and improved water clarity may be possible in certain scenarios, they are not direct results of stratification itself. In fact, stratification can often lead to decreased biodiversity and clarity due to changes in nutrient dynamics and oxygen availability. Thus, the correct response highlights the negative impacts of lake stratification on water quality, emphasizing the