Numerous species occur. Algae are an essential part of the lake ecosystem and provides the food base for most lake organisms, including fish. Phytoplankton populations vary widely from day to day, as life cycles are short. A measure of the amount of carbonates, bicarbonates, and hydroxide present in water.
Low alkalinity is the main indicator of susceptibility to acid rain.
Increasing alkalinity is often related to increased algae productivity. A form of nitrogen found in organic materials and many fertilizers. It is the first form of nitrogen released when organic matter decays. It can be used by most aquatic plants and is therefore an important nutrient. The conversion rate is related to water temperature.