What is the role of a wetland in a watershed?
Wetlands are crucial in a watershed for various reasons but the most important reason is their capability of functioning as natural water filters. Due to this quality they help improve water-quality of the water downstream. Wetlands also provide conducive atmosphere for many biogeochemical reactions to take place, which help in removal of nutrients like nitrogen and phosphorus, by converting them from inorganic forms to organic forms. The site of a wetland in a watershed is very important. For example a riparian wetland (wetland alongside of a waterbody) are very important in a watershed as their ability to control and improve water quality is of great importance to the whole watershed.
