Wetlands on the Roof
Inside a greenhouse on the roof of the Quinlan Life Sciences Center, cattails grow in large tubs while paddles whir in containers filled with water, pebbles, and algae. These artificial streams and wetlands are being used in a series of experiments dealing with aquatic ecology. "This facility of Loyola's is wholly unique," says Emma Rosi-Marshall, assistant professor in the biology and natural science departments. "I don't know of another like it."
One ongoing experiment tries to imitate the changes wrought by the Glen Canyon Dam on the Colorado River. Small motored paddles match the velocity and temperature of the river's water, which changes during the day as the dam opens and closes. Scientists and researchers observe the growth of algae harvested from the Colorado River that are living in these artificial streams. In another experiment, Pamela Geddes, a post-doctoral research fellow in the biology department, is researching how three different species of cattails—one native, one invasive, and one hybrid—are changing the nutrient cycling in their soil. The cattail rhizomes were collected in the field and planted in the artificial wetlands created inside the tanks. "These experiments are critical in conducting research for the conservation of an endangered species," says Rosi-Marshall. "Plus, it's a great opportunity for biology students. They can observe and collect data by going right upstairs after class, rather than driving for three hours to the nearest wetlands."
Brendan Keating (BA ‘01, JD ‘04)