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20. Abstract (Continued) 
| per million and water salinity from below 2,500 to 18,000 parts per million. 
Twelve plant species were selected for evaluation of their ability to 
stabilize the shoreline. Giant reed (Arundo donax) is effective in the upper 
zone (above MHW). Black mangrove (Avicennia germinans) can establish in the 
middle zone (MLW to MHW) and lower zone (below MLW). Saltgrass (Disttchlis 
spicata) may be used in the middle zone if wave action is low at planting time. 
Gulf cordgrass (Spartina spartinae) is adapted for use in the upper zone and 
smooth cordgrass (Spartina alterniflora) is well adapted for use in the middle 
and lower zones. Several combinations of species are suggested for different 
zones. 
An inexpensive wave-stilling device to protect plantings from wave action 
is described. 
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