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Soluble Organic and Inorganic Nutrient Fluxes in Clearcut and Mature Deciduous Forests

^a Dep. of Environmental and Resource Sci., Univ. of Nevada, M.S. 370, Reno, NV 89557 USA
^b Botany Dep., Univ. of Georgia, Athens, GA, 30602 USA
^c USDA Forest Service, Coweeta Hydrologic Lab., Otto, NC, 29763 USA

View larger version (48K): [in a new window]   Fig. 1 Flux weighted average concentrations (a and b) and fluxes (c and d) of dissolved organic C (DOC) for the uncut and cut plots. Strata or soil horizons are indicated on the vertical axis. Asterisks indicate significant (P < 0.05) differences (a significant main effect of cutting treatment in the ANOVA) between cut vs. uncut plots and are placed on bar the which was greater. Error bars are standard error of the mean, indicated only for the organic form and reflect variability among plots, not temporal variability. Numbers beside the bars indicate values

View larger version (55K): [in a new window]   Fig. 2 Flux weighted average concentrations (a and b) and fluxes (c and d) of N forms for the uncut and cut plots. Asterisks indicate significant (P < 0.05) differences (a significant main effect of cutting treatment in the ANOVA) in dissolved organic N (DON) (not inorganic forms) between cut vs. uncut plots, and are placed on bar which was greater. Error bars are standard error of the mean, indicated only for the organic form and reflect variability among plots, not temporal variability. Numbers on or beside the bars indicate values and are in the same order as stacking of the bars

View larger version (44K): [in a new window]   Fig. 3 Flux weighted average concentrations (a and b) and fluxes (c and d) of P forms for the uncut and cut plots. Asterisks indicate significant (P < 0.05) differences (a significant main effect of cutting treatment in the ANOVA) in dissolved organic P (DOP) (not PO4) between cut vs. uncut plots , and are placed on bar which was greater. Error bars are standard error of the mean, indicated only for the organic form and reflect variability among plots, not temporal variability. Numbers on or beside the bars indicate values and are in the same order as stacking of the bars