Table B-5. Low dune grass community data for the first sampling 
period (25 May 1981).1 
Relative 
frequency 
(percent) 
Grams per 
square 
meter 
Frequency 
(percent) 
Ammophtla 
brevitltgulata 45.3 
Eritgeron 
eanadensts 
var. pustllus 4.7 
Cenehrus 
trtbulotdes 0.01 
Total 
lBased on forty 0.2-meter x 0.2-meter quadrats. 
Table B-6. Low dune grass community data for the second sampling 
period (20 July 1981).1 
Relative Total Grams per 
Frequency frequency weight Square 
Species (percent) (percent) (grams ) meter 
Ammophila 
breviligulata 47.5 38.0 82.3 51.4 
Erigeron 
canadensis 
var. pusillu. V5) 26.0 24.5 15.3 
Euphorbia 
polygonifolia 20.0 16.0 0.98 0.61 
Cenchrus 
tribuloides 7 Ge) 14.0 Sos) 2.2 
Triplasis 
purpurea 5.0 4.0 0.01 0.01 
Diodia teres 2.5 2.0 0.01 0.01 
Total { 111.3 69.5 
lgased on forty 0.2-meter x 0.2-meter quadrats. 
42 
