Table 6. Mean aboveground biomass for five plant species at Duck, 

 North Carolina, 1974. 



Plot 

 No. 



Mean aboveground dry wt (g/m ) 



U 



Bitter panicuin (Hatteras) 



Bitter panicuin (Ocracoke) 



Hatteras beachgrass 



Bitter panicuin (Hatteras) plus 

 Sea oats (Duck) 



Bitter panicum (Hatteras) plus 

 Hatteras beachgrass 



Bitter panicum (Hatteras) plus 

 Sea oats (Duck) plus 

 Hatteras beachgrass 



67 

 17 

 46 

 43 



72 

 45 

 58 

 58 



6 

 85 

 91 

 61 



35 

 15 

 55 

 35 



23 

 6 

 7 



12 



1. Based on five l-square-meter sample subplots in each replicate 

 (plot) per treatment, n = 90. 



2. Arrtnophila bveviliguiata (American beachgrass). 



3. Panicum amarum (bitter panicum). 



4. Panicum amarulum (shoredune panicum). 



5. Triplasis purpurea (purple sandgrass) ; sampled in only one replicate 

 (plots 1 to 6) . 



6. Uniota panioulata (sea oats) . 



7. Treatment means for bitter panicum only, standard error of the 

 difference among equally replicated treatment means, s- =21; 

 Isd =47. d 



0.05 



25 



