USGS logo
South Florida Information Access

publications > open file report > OFR 99-230 > tables > table 8

Table 8a. Sawgrass biomass in the flume, March, 1997 [Plants are 27 months old; layer in centimeters above the sediment/water interface; sample biomass in grams dry weight per square meter (gdw/m2); dead includes all dead material.]

Sample biomass (gdw/m2)
Sample designation ---- 1A 1B 1C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 145.24 31.86 177.10 69.75 10.69 80.44 158.80 26.34 185.14
40-60 131.25 59.92 191.17 78.79 14.57 93.36 132.83 27.99 160.81
20-40 156.37 118.12 274.48 76.28 27.84 104.12 175.17 38.68 213.84
0-20 187.94 138.50 326.44 91.57 59.49 151.05 196.19 141.15 337.34
Totals 620.80 348.39 969.19 316.39 112.59 428.98 662.99 234.15 897.14

Sample biomass (gdw/m2)
Sample designation ---- 2A  2B  2C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 81.30 70.40 151.70 190.74 64.58255.3267.2429.9297.16
40-6053.2555.11 108.36 108.21 38.18 146.3954.8220.8875.71
20-40 61.9398.60 160.53 108.14 64.01 172.1563.3653.96117.33
0-20 84.75 257.62 342.37 147.04 120.92 267.95 62.9368.03 130.96
Totals 281.23481.72 762.95554.13 287.69 841.82248.36 172.80 421.16

Sample biomass (gdw/m2)
Sample designation ---- 3A  3B  3C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 52.60 4.59 57.19 133.33 35.38 168.71 153.06 40.40 193.46
40-60 46.07 13.28 59.35 96.30 43.06 139.36 118.12 47.51 165.62
20-40 43.06 41.19 84.25 109.29 57.84167.13108.43 70.61179.04
0-20 51.60 135.34186.93 149.83 140.29 290.13 137.28 183.49 320.77
Totals 193.32 194.40 387.72 488.76 276.56 765.32 516.89 342.01 858.90

Sample biomass (gdw/m2)
Sample designation ---- 4A 4B 4C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 159.45 39.97199.42 53.68 16.29 69.97 185.07 67.02 252.09
40-60 131.82 43.70 175.52 50.73 5.45 56.19 142.87 58.05 200.93
20-40 146.18 65.59 211.76 46.14 9.11 55.26 199.92 75.92 275.85
0-20 343.08 110.94 454.03 82.81 59.78 142.59 235.01 111.73 346.74
Totals 780.53 260.20 1040.74 233.36 90.63 324.00 762.88 312.73 1075.61

Table 8b. Summary of sawgrass biomass in the flume, March, 1997 [Plants are 27 months old; layer in centimeters above sediment/water interface; sample biomass in grams dry weight per square meter (gdw/m2); SD = standard deviation; N = number of samples; dead includes all dead material.]

Layer Average live biomass SD N Average dead biomass SD Average total biomass SD
60-90 120.86 52.18 12 36.45 21.66 157.31 67.54
40-60 95.42 37.02 12 35.64 18.76 131.06 50.99
20-40 107.86 52.16 12 60.12 29.78 167.98 69.78
0-20 147.50 84.01 12 127.27 55.52 274.78 100.92
Totals 471.64 211.64 12 259.49 108.92 731.13 269.78

Table 8c. Sawgrass biomass (live and dead culms and leaves and dead litter) in the flume, March, 1997 [Plants are 27 months old; sample biomass in grams dry weight per square meter (gdw/m2); dead refers to dead standing leaves and culms; dead litter is tabulated separately.]

Sample biomass (gdw/m2)
Sample designation ---- 1A 1B
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   33.37 29.92 111.87 1.94   46.86 10.69 22.89  
40-60   67.67 44.85 63.58 15.07   25.40 14.57 53.39  
20-40 15.43 107.78 33.51 48.58 69.18   53.53 18.80 22.75 9.04
0-20 25.62 179.33 42.70 8.61 70.18   87.26 8.68 4.31 50.81
total 41.05 388.15 150.98 232.65 156.37   213.06 52.74 103.33 59.85

Sample biomass (gdw/m2)
Sample designation ---- 1C  2A
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   44.56 26.34 114.24     17.15 70.40 64.15  
40-60   43.13 27.99 89.70     25.04 50.81 28.20 4.31
20-40 8.25 94.22 16.07 80.95 14.35 14.42 48.37 21.17 13.56 63.01
0-20 33.37 156.15 18.94 40.04 88.84 45.42 76.21 74.70 8.54 137.49
total 41.62 338.06 89.34 324.93 103.19 59.85 166.77 217.07 114.46 204.80

Sample biomass (gdw/m2)
Sample designation ---- 2B 2C
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   42.19 64.58 148.54     17.51 29.92 49.73  
40-60   41.05 38.18 67.17     21.60 20.88 33.22  
20-40   90.70 64.01 17.44   4.02 45.14 25.47 18.23 24.47
0-20   147.04 60.57 0.00 60.35 11.19 57.12 18.30 5.81 38.54
total   320.99 227.34 233.15 60.35 15.21 141.37 94.58 106.99 63.01

Sample biomass (gdw/m2)
Sample designation ---- 3A 3B
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   6.31 4.59 46.29     21.89 35.38 111.44  
40-60   8.68 13.28 37.39     28.27 43.06 68.03  
20-40   22.82 27.91 20.24 13.28 5.60 69.75 41.05 39.54 11.19
0-20 10.12 42.05 34.37 9.54 90.85 22.32 147.11 59.99 2.73 57.98
total 10.12 79.87 80.16 113.45 104.12 27.91 267.02 179.47 221.74 69.18

Sample biomass (gdw/m2)
Sample designation ---- 3C 4A
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   22.96 40.40 130.10     48.08 39.97 111.37  
40-60   27.99 47.51 90.13     54.75 43.70 77.07  
20-40 13.42 69.75 35.02 38.68 22.17 4.45 87.62 52.46 58.56 8.68
0-20 53.75 115.32 58.34 21.96 71.40   320.12 27.63 22.96 83.31
total 67.17 236.02 181.27 280.87 93.58 4.45 510.57 163.76 269.96 92.00

Table 8c. Sawgrass biomass (live and dead culms and leaves and dead litter) in the flume, March, 1997, continued [Plants are 27 months old; sample biomass in grams dry weight per square meter (gdw/m2); dead refers to dead standing leaves and culms; dead litter is tabulated separately.]

Sample biomass (gdw/m2)
Sample designation ---- 4B 4C
Layer Dead culms Live culms Dead leaves Live leaves Dead litter Dead culms Live culms Dead leaves Live leaves Dead litter
60-90   6.96 16.29 46.72     55.97 67.02 129.10  
40-60   12.41 5.45 38.32     59.13 52.46 83.74 5.60
20-40   19.66 9.11 26.48     145.96 55.26 53.96 20.67
0-20   79.37 17.01 3.44 42.77 28.13 223.17 18.23 11.84 65.37
total   118.40 47.86 114.96 42.77 28.13 484.24 192.96 278.64 91.64

Table 8d. Summary of biomass (live and dead culms and leaves and dead litter) in the flume, March 1997 [Plants are 27 months old; biomass in grams dry weight per square meter (gdw/m2); SD = standard deviation, N = number of samples.]

Layer Mean dead culms SD Mean live culms SD Mean dead leaves SD Mean live leaves SD Mean dead litter SD N
60-90     30.32 17.02 36.29 21.70 90.54 41.69 0.16 0.56 12
40-60     34.59 18.61 33.56 16.36 60.83 22.40 2.08 4.52 12
20-40 5.47 6.05 71.28 36.46 33.32 17.01 36.58 20.68 21.34 22.31 12
0-20 19.16 18.67 135.85 79.01 36.62 21.98 11.65 11.42 71.49 26.72 12
total 24.63 23.66 272.04 140.02 139.79 63.70 199.59 83.06 95.07 45.58 12

Table 8e. Descriptive information on flume vegetation, March, 1997 [Plants are 27 months old; dead leaves and culms were erect and standing; dead litter was not counted; layer in centimeters above the sediment/water interface; average width in millimeters.]

Live
Layer Large leaves Medium leaves Small leaves Large culms Small culms
Average # leaves/m2 Average width Average # leaves/m2 Average width Average # leaves/m2 Average width Average # culms/m2 Average width Average # culms/m2 Average width
60-90 28.7 11.4 139.3 7.3 58.0 4.2 7.8 12.7 19.1 6.5
40-60 39.5 12.4 100.5 7.8 45.5 4.0 16.7 13.7 11.4 7.4
20-40 36.5 13.2 57.4 8.1 9.6 4.0 26.9 17.4 10.2 6.5
0-20 26.9 14.9 2.4 8.2 2.4 4.8 32.3 24.7 5.4 6.4

Dead
Layer Large leaves Medium leaves Small leaves Large culms Small culms
Average # leaves/m2 Average width Average # leaves/m2 Average width Average # leaves/m2 Average width Average # culms/m2 Average width Average # culms/m2 Average width
60-90 2.4 11.3 73.0 7.1 49.0 4.1        
40-60 3.0 11.3 101.7 6.9 53.8 4.3        
20-40 23.3 12.5 104.1 7.4 35.9 4.2 1.8 12.0 7.2 6.9
0-20 38.3 14.5 81.9 7.3 22.7 4.2 9.0 15.5 7.8 8.1

Table 8f. Summary of leaves and culms in the flume, March, 1997 [Plants are 27 months old; dead leaves and culms were erect and standing; dead litter was not counted; layer in centimeters above the sediment/water interface; SD = standard deviation; N = number of samples.]

Live
Layer Total leaves/m2 SD N Total culms/m2 SD
60-90 226.0 89.86 12 26.9 10.65
40-60 185.4 71.49 12 28.1 12.41
20-40 103.5 50.69 12 37.1 19.07
0-20 31.7 26.58 12 37.7 17.34

Dead
Layer Total leaves/m2 SD N Total culms/m2 SD
60-90 124.4 70.60 12    
40-60 158.5 114.02 12    
20-40 163.3 72.35 12 9.0 9.24
0-20 142.9 83.93 12 16.7 15.70

Table 8g. Leaf area index by layer for the flume, March, 1997 [Leaf area index is calculated for live leaves and culms plus dead standing leaves and culms; layer in centimeters above the sediment-water interface; see text for formulas.]

Layer Leaf Area Index Corrected Leaf Area Index
60-90 0.771 0.772
40-60 0.560 0.572
20-40 0.577 0.691
0-20 0.577 0.857
Total 2.485 2.892


< Go back to Table 7 | Go ahead to Table 9 >



| Disclaimer | Privacy Statement | Accessibility |

U.S. Department of the Interior, U.S. Geological Survey
This page is: http://sofia.usgs.gov/publications/ofr/99-230/table8.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 04 December, 2003 @ 06:10 PM(TJE)