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Florida Lake Management Society Annual Conference, Naples, Florida, June 4 – 7, 2007

use. The pond was divided into four sections and a power analysis was done to determine the number of transects required for sampling within each section. A petite ponar dredge will be used to measure the distribution of Hydrilla in the pond. A LI-COR datalogger with underwater quantum sensors will be used to measure the photosynthetically active radiation (PAR) irradiance data. A YSI meter will be used to measure the temperature at the sediment interface and through the water column. The LI-COR and YSI will be paired with the findings from the petite ponar to validate literature values. Average production will be calculated from the ponds inception and will be compared to reported production values for Hydrilla. If the values differ significantly, productivity cages will be deployed to monitor in situ production. Sampling will occur on a quarterly basis and will be ongoing for one year, to cover a full growing/dormant season for Hydrilla.

References

Barko, J.W., Smart, R.M., McFarland, D.G., and Chen, R.L. (1988). “Interrelationships Between the Growth of Hydrilla verticillata (L.f.) Royle and Sediment Nutrient Availability.” Aquatic Botany 32:3, pp 205-216.

Godfrey, K.E., and Anderson, L.W.J. (1996). “Hydrilla pakistanae as a Biological Control Agent of Hydrilla verticillataL.B. (ed.). Biological Control Program Annual Summary, 1995 California Department of Food and Agriculture, Division of Plant Industry, Sacramento California, USA

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NOTES

Session 4 – Page 14

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