Seston refers to the total mass of suspended particulate matter in a given volume of water. It includes a variety of organic and inorganic particles, such as phytoplankton (microscopic plants), zooplankton (microscopic animals), detritus (decomposed organic material), and sediment. Seston is an important factor in aquatic ecosystems as it plays a crucial role in nutrient cycling, light penetration, and the food web dynamics.
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