Students Involved In Water Quality Research
A-B Tech Biology and Chemistry students are involved in some wet hands-on research, something not always available at a community college. A Together We Read program featuring Wilma Dykeman's book "The French Broad" triggered the initial water sampling project in 2002. Dr. Tom Dechant, Dean of Arts and Sciences, suggested continuing it as an ongoing student-based research project.
"We got together and decided it would be nice to have a class project to create a database on the French Broad since it is our major river in the area," Dechant said. "Very little work has been done on it." Dechant also teaches the Regional Natural History class.
Students have been collecting samples from the French Broad and generating a database on the water quality of the river. "We are trying to expose students to data collection and analysis more typical of four-year universities," said Laurel Young, Biology Instructor teaching the lab for Regional Natural History.
Young takes students on a six-hour trip to collect data from four sites along the French Broad River. Starting with a site near the confluence of the North and West forks at the head of the French Broad, the students head downstream stopping in Brevard at Crab Creek Bridge, Glenn Bridge Recreation Park in Asheville and then a Buncombe County recreation park in Alexander. "Students collect, interpret and add information to the database, and then track trends in the river," Dechant said.
Field data collected includes temperature, pH, dissolved oxygen, and flow rates. Site characteristics such as types of rocks and the amount of tree coverage are also noted. Kick net sampling yields a collection of insect larva and other macroinvertebrates.
These organisms function as indicator species of water quality. Some organisms can only live in clean water, while others can tolerate pollution. Stream residents are more reliable indicators of water quality than are measurements taken at a specified place and time.
Once the field work has been done, water samples are bottled and taken back to A-B Tech for further analyses. The Biology Department tests for coliform bacteria (E. coli) and identifies the macroinvertebrates collected. Chemistry students use an automated data acquisition system called Pasco to take most of the numerical measurements to get information on water hardness, nitrates and total suspended solids. Chemistry Instructor Wes Adams devotes a three-hour lab period for the chemical analysis. Adams said they also used the UV-Vis spectrometer to measure the dissolved organic carbon.
This year's Together We Read selection was Horace Kephart's "Southern Highlander."
Since the setting was the early 20th century, the Natural History students were challenged with finding old water quality data for the French Broad. A 1954 data set was received from RiverLink, a nonprofit organization devoted to the economic and environmental revitalization of the French Broad River. This allowed students to make comparisons of the river then and now.
Not only do the students benefit from the academic experience, but also they become more informed citizens, conscious of the need to maintain the integrity of the region's water resources.
A PowerPoint summary of the data collected is available for viewing at http://www.abtech.edu/as/french/