Lakes are classified based on their trophic state, which refers to their level of biological productivity. - Oligotrophic lakes are nutrient-poor, typically deep, with clear water and low biological productivity. - Mesotrophic lakes have an intermediate level of nutrients and productivity. - Eutrophic lakes are nutrient-rich, often shallow, with high biological productivity (abundant algae and aquatic plants) and accumulation of organic matter. The term "rich organic products" directly indicates a high level of biological production characteristic of eutrophic conditions.
Shallow lake with rich organic products are called :
Asked in HPPSC HPAS Prelims 2011 · Topic: Ecology (Aquatic Ecosystems: Freshwater, Marine, Estuaries, Wetlands)
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