title: Nitrogen conservation in a tropical rain forest.
abstract: A series of plots in an Amazonian Rain Forest were trenched and treated with calcium to determine the effects of perturbation on numbers and activity of nitrifying bacteria. Although treatment resulted in between 2 and 26% of the nitrogen being lost from the humus layer, virtually all of it was in the NH4+form. Numbers of nitrifying bacteria in the plots were relatively low. The low numbers and low activity of nitrifying bacteria is attributed to the low pH and high concentration of tannins in the root mat. It is hypothesized that the suppression of nitrifying bacteria results in nitrogen conservation in the rain forest.
authors.affiliation: Institute of Ecology, University of Georgia, 30602, Athens, Georgia, USA.
authors.forename: C F
authors.initials: CF
authors.lastname: Jordan
authors.affiliation: Institute of Ecology, University of Georgia, 30602, Athens, Georgia, USA.
authors.forename: R L
authors.initials: RL
authors.lastname: Todd
authors.affiliation: centro de Ecologia, Instituto Venezolano de Investigaciones Cientificas, Apartado 1827, Caracas, Venezuela.
authors.forename: G
authors.initials: G
authors.lastname: Escalante