What term describes the natural aging process where lakes and ponds gradually fill with sediment and become wetlands or forests?

• A. Succession (Aquatic)
• B. Primary Succession
• C. Eutrophication
• D. Secondary Succession

Answer: (A)

Aquatic succession describes how a lake or pond gradually changes as sediment and organic matter accumulate on the bottom. Over time, the depth decreases, light and nutrient conditions shift, and plant communities move from open-water species to emergent vegetation along the shore. As these processes continue, the water body fills in further, creating marshes or wetlands, and eventually a terrestrial phase such as a forest can establish. This long-term, inside-aquatic environment progression is the natural aging path for many inland water bodies.

Primary succession would be colonization on barren surfaces with no soil at all, which isn’t the situation here. Secondary succession involves recovery after a disturbance that leaves soil intact, not the gradual infilling of an existing water body. Eutrophication is about nutrient enrichment driving increased productivity, not the whole subsidence and transformation of the lake into wetland and forest.