Table 30. Comparison of survival of sea oats and bitter panicum plantings on open 

 and protected beach sites, Padre Island. 1 



Month 



Planting site 



Percent survival 



Percent soil moisture 

 at 6 inches 



Soil salinity 

 at 6 inches 

 (/xmho/cm) 



Precipitation 





Bitter 

 panicum 



Sea 

 oats 



(month) 



North Padre 



Nov. 73 

 Dec. 



open 2 

 protected 3 



open 

 protected 



53 



100 



78 



96 



12 



72 



3 



37 



20.1 

 23.0 

 17.5 

 19.9 



1,020 



94 



1,025 



75 



1.52 

 0.16 



Jan. 74 



open 

 protected 



77 

 98 



19 

 43 



16.5 

 13.7 



956 

 90 



1.88 



Feb. 



open 

 protected 



78 

 92 



21 

 36 



14.4 

 18.1 



508 

 380 



O.10 



Mar. 



open 

 protected 



72 

 92 



6 

 56 



16.9 

 16.3 



642 

 212 



3.92 



Apr. 



open 

 protected 



50 

 98 



29 

 61 



17.4 

 19.7 



3,900 



225 



0.03 



Total (x) 



open 

 protected 



68 

 96 



15 

 51 



17.1 

 18.5 



1,342 

 179 



7.61 



South Padre 



Oct. 73 



open 

 protected 



36 



92 



38 

 90 



15.7 

 20.6 



720 

 130 



3.27 



Nov. 



open 

 protected 



32 

 94 



22 

 79 



14.6 

 17.3 



343 

 150 



0.87 



Dec. 



open 

 protected 



19 

 93 



17 



55 



6.7 

 17.3 



125 

 165 



0.31 



Jan. 74 



open 

 protected 



59 

 84 



62 

 82 



6.9 

 10.3 



300 

 155 



1.04 



Feb. 



open 

 protected 



39 

 79 



24 

 64 



3.2 

 8.8 



127 



202 



0.08 



Total (x) 



open 

 protected 



37 

 88 



33 



74 



9.4 

 14.9 



323 

 160 



5.57 



1. N = 100 plants. 



2. Bare backshore, 350 to 450 feet inland from shoreline. 



3. Similar to above, but located immediately behind the protection of an artifical dune line 

 (1,100-foot bitter panicum on north Padre, and mid-panicum, North Section Fence on south Padre), 

 about 100 feet farther inland than open beach sites. Elevations of the two sites are 4.5 to 5.0 feet MSL. 



101 



