The forest biogeochemistry research group consisted of Nina Gallagher and Nir Krakauer. To reduce fuel load and stimulate Jack Pine regeneration, restoration logging was conducted in the summers of 1999 and 2000. Lysimeters were placed approximately 2.5 cm below the bottom of the thick, lichen and moss covered O horizon, corresponding to a leached E horizon immediately over bedrock and sampled following two major events in June of 2000. This study will be expanded in the 2001 growing season using greater numbers of lysimeters to determine if elevated nutrient loss following remediation cutting of Jack Pine barrens occurs. Installation of tension-free lysimeters.
Collector is at top and storage vessel below connected by a polyethylene tube.
A glass tube from the storage vessel protrudes above the ground after the storage vessel is buried. Average total phosphorus in soil solution leachates collected in tension free lysimeters in the Jack Pine Barrens following logging. Note the large increases in concentration in the second year cut plots. Average nitrate-N in soil solution leachates collected in tension free lysimeters in the Jack Pine Barrens following logging. Note the large increases in concentration in the second year cut plots.