Currently, prospective areas are being surveyed with spot checks for bat activity. These surveys will allow the most likely habitats to be more thoroughly analyzed with continued monitoring of the representative habitats in the coming seasons . Roundup is one of the most commonly utilized herbicides in the United States. This study will determine the LC50 of Roundup in the Microtox test while chronic test endpoints will be sought in the earthworm tests. The Microtox test involves measuring changes in light output by bacteria before and after exposure to the toxic agent.
Toxicity is measured by a decrease in light output.
The second test is a behavioral test to determine the concentration at which the worms can detect and respond to the contaminant . This research is funded by a J. D. Patterson Grant. Systematic Study of Lakes DeGray, Ouachita, and Greeson, Arkansas Chemical data is routinely collected on the three lakes and their streams for purposes of building a model of chemical patterns in warm-water release reservoirs . Studies include nitrates, phosphates, total nitrogen, total carbon, alkalinity, pH, iron, and maganese. Additionally, during the summer of 2000, samples were collected at nine sites on Lake Ouachita for fecal coliform analysis.