Nitrogen Assimilation by Vegetation

Lycopus americanus Muht ex W. Bart. Gnaphalium uliginosum L. 

FIGURE 8.51 Mean plant tissue nitrogen content of wetland plant grown under similar conditions with sustained fertilization. Error bars denote one standard deviation (n = 4-5) (From McJannet et al., 1995). 

FIGURE 8.52 Relationship between plant tissue nitrogen and the aboveground biomass of wetland plants. The solid line represents the linear best-fit to the data (r = 0.67, p . 001, n = 31) (McJannet et al., 1995). 

FIGURE 8.53 Temporal changes in tissue nitrogen content and nitrogen storage of cattails Typha latifolid). (Adapted from Reddy and DeBusk, 1987.) 

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