*5.5.1 Wetlands as nitrogen and phosphorus interceptors: enhancing sinks*

Wetlands, riparian zones and ponds can act as N and P traps, they can sediment out particulate N and P and convert reactive N into harmless N2 through the process of denitrification [51–53]. Wetlands play a key role in P removal as a result of processes that include uptake by microbes and vegetation, peat accretion (sorption and burial in soil and sediments), and precipitation by iron and aluminum [65–67].
