Loss and uptake of ¹⁵N-ammonium in submerged soils of a cattail marsh.

Some 75.3% (53.6% in the plant and 21.7% in the soil) of the isotopically labeled N added to sampling cylinders containing a single cattail plant could be recovered at the end of one growing season, whereas only 34.6% could be recovered from control cylinders, suggesting that Typha latifolia rapidly assimilates labeled nitrogen before it is lost via denitrification or uptake by free-living soil microorganisms. -from Author