Which characteristic distinguishes bogs from other wetland types?

Bogs are unique types of wetlands primarily characterized by their acidic waters and the growth of sphagnum moss. This specific environment leads to a distinct set of flora and fauna adapted to the low nutrient conditions. Sphagnum moss contributes to the acidity of the water by producing organic acids during decomposition and by slowing down the decomposition process itself, resulting in nutrient-poor conditions that are particularly different from other wetland types such as swamps or marshes.

In contrast, other wetland types often have clearer waters, are dominated by grasses, or possess nutrient-rich soils that support a variety of plant life, making them less acidic and more fertile environments than bogs. Thus, the characteristic of having acidic water and significant sphagnum growth is what sets bogs apart from other wetlands.