The relationship between nitrate concentration in the Southern Appalachian mountain streams and terrestrial nitrifiers. Todd, W. T. S. & C. D. Monk, R. L. 1975. Paper abstract bibtex The nitrate content of stream water and the nitrifying bacterial population of the terrestrial horizon were measured in three Southern Appalachian watersheds over a 22-month period. The watersheds studied were a fescue grass catchment, a 15-year-old white pine plantation, and a mature undisturbed hardwood forest. Monthly averages of NO3-N in stream water from the three watersheds were 730, 190, and 3 p/b respectively; the respective nitrifying populations averaged 16,000, 175 and 22 per gram of dry weight for each 40 cm soil profile. These populations were concentrated in the upper 10 cm of the profile (grass = 98 percent, white pine = 90 percent, and hardwood = 88 percent). A correlation is evident between the number of nitrifying bacteria in the soil and the NO3 content of the streams. Nitrifying activity appears to be dependent on vegetation type and successional stage.
@article{todd_relationship_1975,
title = {The relationship between nitrate concentration in the {Southern} {Appalachian} mountain streams and terrestrial nitrifiers.},
url = {http://cwt33.ecology.uga.edu/publications/371.pdf},
abstract = {The nitrate content of stream water and the nitrifying bacterial population of the terrestrial horizon were measured in three Southern Appalachian watersheds over a 22-month period. The watersheds studied were a fescue grass catchment, a 15-year-old white pine plantation, and a mature undisturbed hardwood forest. Monthly averages of NO3-N in stream water from the three watersheds were 730, 190, and 3 p/b respectively; the respective nitrifying populations averaged 16,000, 175 and 22 per gram of dry weight for each 40 cm soil profile. These populations were concentrated in the upper 10 cm of the profile (grass = 98 percent, white pine = 90 percent, and hardwood = 88 percent). A correlation is evident between the number of nitrifying bacteria in the soil and the NO3 content of the streams. Nitrifying activity appears to be dependent on vegetation type and successional stage.},
author = {Todd, W. T. Swank, J. E. Douglass, P. C. Kerr, D. L. Brockway, {and} C. D. Monk, R. L.},
year = {1975},
keywords = {CWT}
}
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