Table 9. Summary of data collected from 929 quadrats sampled at site 1 

 throat, August 1977 (preoverwash) . 



Species 



Frequency 



Cover 



Density 



I.V. 



Pet Relative Pet Relative Total Relative 



Agrovyrcm pungens 

 Ammovhila breviligulata 

 Artemisia cauia ia 

 Artemisia sieller-iana 

 Cakile edentula 

 Euphorbia poly gani folia 

 Lathy rus faponicus 

 Salsola kali 

 Solidago semvervirens 

 Svartina -patens 



1.4 



17.9 



0.5 



1.8 



0.9 

 0.2 

 1.8 

 0.7 

 1.7 

 6.6 



4.3 



53.4 



1.5 



5.3 



2.8 

 0.6 

 5.3 

 2.2 

 4.9 

 19.9 



0.3 

 3.1 

 0.2 

 0.4 

 <0.1 

 <0.1 

 0.1 

 0.1 

 0.3 

 2.1 



4.5 



48.5 



2.7 



5.6 



0.2 

 0.2 

 1.0 

 0.7 

 4.5 

 32.2 



138 

 1,133 



8 



199 



28 



3 



24 



5 



22 



2,249 



3.6 

 29.8 



0.2 

 5.2 

 0.7 

 0.1 

 0.6 

 0.1 

 0.6 

 59.0 



12.4 

 131.6 



4.4 



16.1 



3.7 



0.7 



6.9 



3.0 



10.0 



110.0 



Bare sand 

 Drift 



99.9 



54.9 



86.5 

 7.2 



'Diversity = 0.6754; Richness - 10. 



2 l.V.'s are importance values calculated from cover, frequency, and density 

 of the plants. 



(3) Site 2. On 2 September 1976 during a spring tide, a distant 

 tropical storm produced large swells, resulting in overwash at site 2 with 

 sand penetration to the lee of the dune line. Plants were not found on the 

 washover in 1977, except at the fan edges where sand burial was shallow. The 

 adjacent salt marsh was populated with a patchwork growth ot high and low 

 marsh vegetation due to irregular topography caused by mosquito ditching. 



Vegetation data for site 2 appear in Table 10. Similar to site 1, site 2 

 was dominated by Spartina patens with an l.V. of 137.8, indicating a high 

 marsh community. The distribution of other species is, however, far more 

 uniform than at site 1 fan. There is a mixture of low marsh vegetation among 

 stands of Svartina patens. A map of the site shows the sporadic zonation 

 patterns (Fig. 32). 



Table 10. Summary of data collected from 234 quadrats 



sampled at site 2, August 1977 (preoverwash). 



Species 



Agropyron pungens 

 Distidhlis spieata 

 Juncus gerardi 

 Limonium nashii 

 Pucainellia sp. 

 Salicomia europaea 

 Saliaornia xnrginica 

 Spartina altemiflora 

 Spartina patens 

 Suaeda maritinz 



Frequency 

 Pet Relative 



Cover 

 Pet Relative 



Den&ity 

 Total Relative 



I.V. 



8.1 



0.4 



6.8 



4.3 



12.8 



1.3 



43.6 



23.9 



44.4 



0.4 



5.6 

 0.3 

 4.7 

 2.9 

 8.8 

 0.9 

 29.8 



30.4 

 0.3 



2.3 



0.1 



<0.1 



<0.1 



2.2 



0.1 



12.5 



9.7 



30.4 



<0.1 



3.8 



0.1 



5.5 



<0.1 



3.5 



0.1 



20.6 



16.1 



50.2 



<0.1 



1,168 



22 



9,452 



10 



5,835 



19 



30,111 



5,835 



64,063 



1 



1.1 

 <0.1 



8.4 

 <0.1 



5.2 

 <0.1 

 26.8 



5.2 

 57.2 

 <0.1 



10.5 



0.4 

 18.6 



3.0 

 17.5 



1.0 



77.2 



37.7 



137.8 



0.3 



1 I.V.'s are importance values calculated from cover, frequency, and density 

 of the plants. 



69 



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