In spite of the distinct first-year disadvantage suffered by the Ore- 

 gon Inlet plants, the April 1975 culm counts suggest that these plants 

 are increasing. 



In summary, the local source has a distinct advantage during the 

 establishment period and would succeed where an introduced grass could 

 fail. The April 1975 data suggest that, if it survives the first 

 winter, the foreign source may improve with time and prove adequate for 

 the new location. 



7. Date and Elevation of Seeding . 



Seedings were made in April 1972 at Beaufort on dredge spoil. A 

 21 June seeding in the low elevation zone was added after part of the 

 April seeding was destroyed by a late May storm. An exploratory seed- 

 ing in the high elevation zone was made 21 June to find a way of quick- 

 ly stabilizing this zone. Late seeding reduced the first-year growth 

 (Woodhouse, Seneca, and Broome, 1974) but this difference disappeared 

 by the third year (Table 8) . Although seeding was successful in the 

 high zone, above its usual elevation, it will probably be replaced by 

 other species. However, this is a practical and economical way to 

 stabilize this zone. 



8. Seeding Experiments at Pine Knoll Shores . 



Three seeding experiments were initiated at this site in April 

 1974 and several seeding treatments were included in transplanting 

 experiments. Several days of strong northerly winds in early May, 

 after germination occurred, completely destroyed all the seeding tests 

 along the shore. Seeding is not a reliable approach under these con- 

 ditions but could succeed if the northerly winds came at a less criti- 

 cal time. 



IV. SHORELINE PROTECTION 



Shoreline stabilization and erosion abatement will often be a 

 major objective of marsh restoration or establishment. The findings 

 from the following three plantings relate to some aspect of shoreline 

 stabilization. 



1. Sediment Trapping . 



The plantings at Snow's Cut were made during April 1971 and their 

 development to November 1973 was presented in Woodhouse, Seneca, and 

 Broome (1974) . Shortly after planting, survey lines were established 

 through three planted blocks and through four unplanted areas between 

 the blocks (Fig. 11). Changes in elevation were assumed to be a 

 measure of stabilization. Results from a 13 November 1974 survey are 

 presented in Figures 12 through 18. Except for transect 7 on the down- 

 stream side of the experimental area, little net change occurred in the 



