Editing Swamp (section)

==Hydrology==
Swamps are characterized by their saturated soils and slow-moving waters.<ref name=":2" /> The water that accumulates in swamps comes from a variety of sources including precipitation, groundwater, tides and/or freshwater flooding.<ref name=":1" /> These hydrologic pathways all contribute to how energy and nutrients flow in and out of the ecosystem. As water flows through the swamp, nutrients, sediment and pollutants are naturally filtered out. Chemicals like phosphorus and nitrogen that end up in waterways get absorbed and used by the aquatic plants within the swamp, purifying the water. Any remaining or excess chemicals present will accumulate at the bottom of the swamp, being removed from the water and buried within the sediment.<ref name=":0" /> The hydrology of a swamp is a key factor in its biogeochemical environment, which includes the levels and availability of resources like oxygen, nutrients, pH, and toxicity.<ref name=":1" />