publications > open file report > OFR 99-230 > tables > table 6
Table 6a. Sawgrass biomass in the flume, May, 1996 [Plants are 17 months old; layer in centimeters from 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 | 99.75 | 12.77 | 112.52 | 43.70 | 31.43 | 75.13 | 68.17 | 16.72 | 84.89 |
| 40-60 | 74.70 | 38.68 | 113.38 | 27.34 | 26.34 | 53.68 | 55.33 | 41.12 | 96.45 |
| 20-40 | 111.16 | 61.14 | 172.30 | 33.44 | 25.69 | 59.13 | 56.19 | 67.38 | 123.57 |
| 0-20 | 111.16 | 63.65 | 174.81 | 68.10 | 127.88 | 195.98 | 82.95 | 170.29 | 253.24 |
| Total | 396.76 | 176.24 | 573.00 | 172.58 | 211.33 | 383.92 | 262.64 | 295.51 | 558.15 |
| Sample biomass (gdw/m2) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sample designation ---- | 2A | 2B | 2C | ||||||
| Layer | Live | Dead | Total | Live | Dead | Total | Live | Dead | Total |
| 60-90 | 125.44 | 6.60 | 132.04 | 164.98 | 23.97 | 188.94 | 189.16 | 33.30 | 222.46 |
| 40-60 | 107.50 | 20.88 | 128.38 | 116.83 | 69.75 | 186.58 | 125.01 | 67.74 | 192.75 |
| 20-40 | 113.88 | 56.33 | 170.21 | 116.25 | 81.81 | 198.06 | 148.76 | 70.76 | 219.51 |
| 0-20 | 123.07 | 153.78 | 276.85 | 170.79 | 204.30 | 375.09 | 161.32 | 227.98 | 389.30 |
| Total | 469.88 | 237.60 | 707.48 | 568.84 | 379.83 | 948.67 | 624.24 | 399.77 | 1024.02 |
| Sample biomass (gdw/m2) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sample designation ---- | 3A | 3B | 3C | ||||||
| Layer | Live | Dead | Total | Live | Dead | Total | Live | Dead | Total |
| 60-90 | 42.12 | 12.99 | 55.11 | 163.47 | 28.13 | 191.60 | 103.48 | 16.00 | 119.48 |
| 40-60 | 40.76 | 34.80 | 75.56 | 117.97 | 57.05 | 175.02 | 53.82 | 51.60 | 105.42 |
| 20-40 | 41.26 | 39.54 | 80.80 | 135.05 | 58.48 | 193.54 | 83.60 | 52.10 | 135.70 |
| 0-20 | 88.26 | 189.37 | 277.64 | 153.71 | 187.08 | 340.79 | 87.40 | 165.98 | 253.38 |
| Total | 212.41 | 276.71 | 489.12 | 570.20 | 330.74 | 900.95 | 328.30 | 285.68 | 613.98 |
| Sample biomass (gdw/m2) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Sample designation ---- | 4A | 4B | 4C | ||||||
| Layer | Live | Dead | Total | Live | Dead | Total | Live | Dead | Total |
| 60-90 | 200.28 | 29.78 | 230.06 | 189.09 | 122.78 | 311.87 | 51.52 | 7.75 | 59.27 |
| 40-60 | 129.60 | 59.20 | 188.80 | 146.75 | 41.48 | 188.23 | 41.41 | 26.41 | 67.81 |
| 20-40 | 139.36 | 51.45 | 190.81 | 165.48 | 40.40 | 205.88 | 59.20 | 162.90 | 222.10 |
| 0-20 | 150.77 | 156.37 | 307.13 | 179.11 | 148.04 | 327.15 | 60.28 | 159.52 | 219.80 |
| Total | 620.01 | 296.80 | 916.81 | 680.43 | 352.70 | 1033.13 | 212.41 | 356.58 | 568.99 |
Table 6b. Summary of sawgrass biomass in the flume, May, 1996 [Plants are 17 months old; layer in centimeters from the 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 | 120.10 | 60.22 | 12 | 28.52 | 31.09 | 148.61 | 80.24 |
| 40-60 | 86.42 | 41.70 | 12 | 44.59 | 16.42 | 131.00 | 52.80 |
| 20-40 | 100.30 | 44.47 | 12 | 64.00 | 34.61 | 164.30 | 53.45 |
| 0-20 | 119.74 | 42.27 | 12 | 162.85 | 41.27 | 282.60 | 67.92 |
| Total | 465.15 | 243.40 | 12 | 299.96 | 68.16 | 726.52 | 226.03 |
Table 6c. Descriptive information on flume vegetation, May, 1996 [Plants are 17 months old; layer in centimeters above the sediment/water interface; average width in millimeters.]
| 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 | 27.5 | 8.9 | 253.6 | 6.7 | 125.0 | 3.9 | 32.3 | 4.6 | ||
| 40 - 60 | 32.9 | 10.1 | 185.4 | 6.6 | 106.4 | 4.0 | 4.8 | 11.7 | 49.0 | 4.9 |
| 20 - 40 | 22.7 | 12.3 | 41.3 | 7.2 | 11.4 | 4.1 | 28.1 | 13.4 | 40.1 | 7.5 |
| 0 - 20 | 5.4 | 14.8 | 5.4 | 7.6 | 0.6 | 4.0 | 52.0 | 14.8 | 23.3 | 9.2 |
Table 6d. Summary of leaves and culms in the flume, May, 1996 [Plants are 17 months old; layer in centimeters above the sediment/water interface; SD = standard deviation; N = number of samples.]
| Layer | Total leaves/m2 | SD | N | Total culms/m2 | SD |
|---|---|---|---|---|---|
| 60 - 90 | 406.0 | 145.19 | 12 | 32.3 | 24.95 |
| 40 - 60 | 324.7 | 130.90 | 12 | 53.8 | 19.95 |
| 20 - 40 | 75.4 | 43.43 | 12 | 68.2 | 20.18 |
| 0 - 20 | 11.4 | 13.84 | 12 | 75.4 | 17.97 |
Table 6e. Leaf area index by layer for the flume, May, 1996 [Leaf area index is calculated for live leaves and culms only; layer in centimeters above the sediment-water interface; see text for formulas.]
| Layer | Leaf Area Index | Corrected Leaf Area Index |
|---|---|---|
| 60-90 | 0.775 | 0.959 |
| 40-60 | 0.456 | 0.692 |
| 20-40 | 0.261 | 0.427 |
| 0-20 | 0.222 | 0.523 |
| Total | 1.713 | 2.601 |
U.S. Department of the Interior, U.S. Geological Survey
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Last updated: 04 December, 2003 @ 06:29 PM(TJE)