c. site Maintenance . 



(1) Fertilizer . Conventional fertilizer costs (including materials 

 and labor) are variable but will range from about $150 to $250 per hectare 

 (1980 prices) ($0.15 to $0.25 per linear meter for a 10-meter width) the year 

 of establishment. Slow-release fertilizer is considerably more expensive, 

 about $1,500 to $2,500 per hectare (1980 prices) or $1 to $4 per linear meter 

 for a 10-meter-wide planting. 



(2) Debris Removal . Utter such as wood, styrofoam, algae, and 

 dislodged submerged plants accumulate in the high marsh and form a debris 

 line. This material may smother and damage plantings particularly during the 

 first two growing seasons. This litter should be removed in both the fall and 

 the spring. An estimate of labor required to perform this work is not 

 available. 



(3) Wildlife Predatlon . Canada and Snow geese are fond of the tender 

 roots and rhizomes of marsh plants and may destroy plantings before establish- 

 ment in areas near waterfowl wintering concentrations. Rope fences erected on 

 the seaward edge of planted areas have been used successfully to exclude 

 waterfowl during the first few growing seasons. The fences consist of wood, 

 metal, or plastic pickets strung with nylon rope. The ropes are spaced at 15- 

 centimeter Intervals from the sediment surface to MHW (Garblsch, personal 

 communication, 1977). Estimates for the cost of this work are not available. 



3. Summary . 



a. Cost Comparison : 



(1) Vegetative stabilization (10-meter-wide, landward to seaward 

 planting) : 



(a) Sprigs - $12 per linear meter. 



(b) Nursery seedlings - $28 per linear meter. 



(2) Sandbag revetment - $50 per linear meter. 



(3) Quarrystone revetment - $70 per linear meter. 



(4) Gabionwall - $140 per linear meter. 



(5) Wood sheeting bulkhead - $1,000 per linear meter. 



b. Planting Costs ; 



( 1) Site preparation (as required) : 



(a) Grading - $35 to $70 per linear meter. 



(b) Wave-stllllng devices - $25 to $100 per linear meter. 



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