Reservoirs can impact the carbon cycle through a process known as reservoir-induced greenhouse gas emissions. When vegetation and organic matter in the area to be flooded decompose underwater, they release methane, a potent greenhouse gas. Methane emissions can occur due to the lack of oxygen in the submerged environment. Additionally, reservoirs alter the carbon cycle by influencing primary productivity, nutrient cycling, and the distribution of organic matter in the water body.
These changes can affect carbon sequestration and the balance of carbon dioxide and methane emissions in the reservoir and surrounding areas. Therefore, the impact of reservoirs on the carbon cycle depends on various factors, including the reservoir's size, age, and environmental conditions.
