USGS logo
South Florida Information Access

publications > open file report > OFR 99-230 > tables > table 9

Table 9a. Sawgrass biomass in the flume, layers 0-20 through 60-90 centimeters, June, 1997 [Plants are 30 months old; layer in centimeters above the sediment/water interface; sample biomass in grams dry weight per square meter (gdw/m2).]

Sample biomass (gdw/m2)
Sample designation ---- 1A 1B 1C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 117.11 20.88 137.99 37.39 4.95 42.34 80.16 77.43 157.58
40-60 77.07 55.69 132.76 30.71 7.25 37.96 60.42 65.30 125.72
20-40 91.21 84.10 175.31 19.09 23.47 42.55 64.37 88.91 153.28
0-20 108.21 168.85 277.07 35.38 90.92 126.30 88.55 216.36 304.91
Total 393.60 329.52 723.13 122.57 126.58 249.15 293.50 448.00 741.50

Sample biomass (gdw/m2)
Sample designation ---- 2A 2B 2C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 105.06 24.83 129.89 72.33 8.32 80.66 264.08 63.44 327.51
40-60 77.93 56.83 134.77 46.86 56.62 103.48 199.42 125.22 324.64
20-40 98.96 107.78 206.74 35.38 106.20 141.58 176.53 110.94 287.47
0-20 177.61 169.35 346.96 76.21 160.02 236.23 382.55 155.65 538.20
Total 459.55 358.80 818.35 230.78 331.17 561.95 1022.58 455.25 1477.83

Sample biomass (gdw/m2)
Sample designation ---- 3A 3B 3C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 140.15 13.56 153.71 75.42 4.09 79.51 42.19 0.00 42.19
40-60 94.87 35.23 130.10 44.20 12.06 56.26 69.32 10.26 79.58
20-40 89.63 50.38 140.00 52.82 15.79 68.60 34.01 22.39 56.40
0-20 133.76 151.20 284.96 53.03 106.92 159.95 40.47 120.13 160.60
Total 458.40 250.37 708.77 225.47 138.86 364.33 186.00 152.78 338.78

Sample biomass (gdw/m2)
Sample designation ---- 4A 4B 4C
Layer Live Dead Total Live Dead Total Live Dead Total
60-90 405.52 102.40 507.92 102.69 6.67 109.36 279.65 49.01 328.66
40-60 219.80 136.49 356.29 119.27 27.27 146.53 191.89 93.43 285.32
20-40 204.87 138.28 343.16 93.93 60.28 154.21 183.63 108.93 292.57
0-20 283.67 260.78 544.44 118.62 134.05 252.67 278.86 170.21 449.07
Total 1113.86 637.95 1751.81 434.51 228.27 662.78 934.03 421.59 1355.62

Table 9b. Summary of sawgrass biomass in the flume, layers 0-20 through 60-90 centimeters, June, 1997 [Plants are 30 months old; layer in centimeters above the sediment/water interface; sample biomass in grams dry weight per square meter (gdw/m2).]

Layer Average live biomass SD N Average dead biomass SD Average total biomass SD
60-90 143.48 113.14 12 31.30 33.77 174.78 141.24
40-60 102.65 65.54 12 56.80 43.07 159.45 104.57
20-40 95.37 62.08 12 76.45 41.01 171.82 96.20
0-20 148.08 111.20 12 158.70 46.25 306.78 140.35
Total 489.57 342.12 12 323.26 153.48 812.83 474.01

Table 9c. Sawgrass biomass (dead and live leaves and culms) in the flume, layers 0-20 through 60-90 centimeters, June, 1997 [Plants are 30 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 Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 94.51 20.88 22.60     33.44 3.95 3.95   1.00
40-60 39.11 28.49 37.96   27.20 23.25 7.25 7.46    
20-40 16.07 33.01 75.13 4.45 46.64 0.00 11.19 19.09   12.27
0-20 3.80 11.63 104.41 29.42 127.80 2.08 8.61 33.30 36.17 46.14
Total 153.49 94.01 240.11 33.87 201.65 58.77 31.00 63.79 36.17 59.42

Sample biomass (gdw/m2)
Sample designation ---- 1C 2A
Layer Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 71.83 34.88 8.32   42.55 95.23 5.67 9.83   19.16
40-60 45.28 52.89 15.14   12.41 55.54 20.38 22.39   36.45
20-40 4.81 66.02 59.56 6.75 16.15 21.10 38.25 77.86 3.23 66.31
0-20   25.47 88.55 13.28 177.61   9.83 177.61 19.16 140.36
Total 121.92 179.26 171.58 20.02 248.72 171.87 74.13 287.69 22.39 262.28

Sample biomass (gdw/m2)
Sample designation ---- 2B 2C
Layer Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 68.89 8.32 3.44     216.28 55.97 47.79   7.46
40-60 33.22 55.04 13.63   1.58 119.48 60.06 79.94   65.16
20-40 5.53 48.58 29.85   57.62 19.16 61.07 157.37 4.95 44.92
0-20   33.51 76.21 22.82 103.69 0.00 24.61 382.55 16.00 115.03
Total 107.64 145.46 123.14 22.82 162.90 354.92 201.72 667.66 20.95 232.57

Sample biomass (gdw/m2)
Sample designation ---- 3A 3B
Layer Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 123.00 13.56 17.15     67.96 4.09 7.46    
40-60 69.39 32.22 25.47   3.01 37.32 10.26 6.89   1.79
20-40 4.81 45.35 84.82   5.02 10.05 15.14 42.77   0.65
0-20 1.00 16.58 132.76 1.22 133.40   22.75 53.03 3.01 81.16
Total 198.20 107.71 260.20 1.22 141.44 115.32 52.24 110.15 3.01 83.60

Sample biomass (gdw/m2)
Sample designation ---- 3C 4A
Layer Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 39.32   2.87     339.28 93.07 66.23   9.33
40-60 62.07 10.26 7.25     128.31 119.34 91.49   17.15
20-40 10.98 15.36 23.03   7.03 6.31 123.79 198.56 2.51 11.98
0-20   8.47 40.47 12.92 98.74   34.80 283.67 3.88 222.10
Total 112.38 34.09 73.63 12.92 105.77 473.90 371.00 639.96 6.39 260.56

Table 9d. Sawgrass biomass (dead and live leaves and culms) in the flume, layers 0-20 through 60-90 centimeters, June, 1997, continued [Plants are 30 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 Live leaves Dead leaves Live culms Dead culms Dead Live leaves Dead leaves Live culms Dead culms Dead
60-90 93.72 4.02 8.97 0.00 2.66 223.75 49.01 55.90 0.00 0.00
40-60 76.64 16.65 42.63 0.00 10.62 111.01 91.64 80.87 0.00 1.79
20-40 13.63 36.17 80.30 4.81 19.30 26.12 77.50 157.51 4.23 27.20
0-20 0.00 9.83 118.62 3.59 120.63 0.00 13.63 278.86 4.31 152.27
Total 183.99 66.67 250.51 8.40 153.21 360.88 231.78 573.15 8.54 181.27

Table 9e. Summary of biomass (live and dead leaves and culms and dead litter) in the flume, June, 1997 [Plants are 30 months old; biomass in grams dry weight per square meter (gdw/m2); SD = standard deviation; N = number of samples.]

Layer Average live leaves SD Average dead leaves SD Average live culms SD Average dead culms SD Average dead litter SD N
60-90 122.27 91.28 24.45 28.62 21.21 22.44     6.85 12.67 12
40-60 66.72 35.53 42.04 35.25 35.93 31.32     14.76 19.72 12
20-40 11.55 7.84 47.62 31.73 83.82 58.15 2.58 2.48 26.26 22.11 12
0-20 0.57 1.20 18.31 9.62 147.50 111.53 13.81 11.39 126.58 45.35 12
Total 201.11 127.04 132.42 100.07 288.46 217.92 16.39 11.50 174.45 69.21 12

Table 9f. Descriptive information on flume vegetation, layers 0-20 through 60-90 centimeters, June, 1997 [Plants are 30 months old; dead leaves and culms were erect and standing; dead litter was not counted; layer in centimeters above sediment/water interface; average width in millimeters.]

Live
Layer Avg # of Lg. leaves/m2 Average width Avg # of Med. leaves/m2 Average width Avg # of Sm. leaves/m2 Average width Avg # of Lg. culms/m2 Average width Avg # of Sm. culms/m2 Average width
60-90 26.9 11.3 218.3 7.2 38.3 3.3 1.2 13.5 32.9 5.3
40-60 31.1 13.8 125.0 7.5 35.3 4.0 11.4 13.2 29.9 5.8
20-40 19.5 13.8 10.2 7.3 9.0 2.9 30.5 14.5 15.0 7.4
0-20 0.6 11.0 0.6 6.0 0.6 5.0 40.7 20.7 9.0 6.4

Dead
Layer Avg # of Lg. leaves/m2 Average width Avg # of Med. leaves/m2 Average width Avg # of Sm. leaves/m2 Average width Avg # of Lg. culms/m2 Average width Avg # of Sm. culms/m2 Average width
60-90 1.2 12.0 65.8 6.5 17.3 3.8     0.00  
40-60 21.5 14.8 107.0 6.8 22.7 4.3     0.00  
20-40 61.0 16.1 102.3 7.7 12.0 4.3 0.6 15.0 4.78 7.67
0-20 37.7 14.9 20.9 6.9 7.8 3.7 7.2 15.0 6.58 8.54

Table 9g. Summary of leaves and culms in the flume, June, 1997 [Plants are 30 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
60-90 283.5 154.77 12 34.1 21.45
40-60 191.4 75.59 12 41.3 24.12
20-40 38.7 22.4 12 45.4 23.77
0-20 1.8 3.25 12 49.6 28.45

Dead
Layer Total leaves/m2 SD N Total culms/m2 SD
60-90 77.1 89.48 12    
40-60 139.3 130.02 12    
20-40 165.0 117.14 12 4.8 6.21
0-20 66.4 35.83 12 13.8 9.41

Table 9h. Leaf area index by layer for the flume, June, 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 0.862 0.897
40-60 0.653 0.719
20-40 0.545 0.643
0-20 0.336 0.572
Total 2.395 2.831


< Go back to Table 8 | Go ahead to PDF version >



| 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/table9.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 03 November, 2004 @ 03:32 PM(TJE)