Table 2

Frass activity	TOC mg/l	TNb mg/l	DOC mg/l	DNb mg/l
a) strong frass vs. control	226.83*** vs 46.59	18.96** vs 7.36	163.90*** vs 37.19	9.16* vs 5.37
b) light frass vs. control	64.81*** vs 43.31	9.18* vs 6.14	55.97* vs 40.01	7.51 vs 6.56

TOC = total organic carbon, DOC = dissolved organic carbon, TNb = total nitrogen bounded, DNb = dissolved nitrogen bounded. Level of significance (* = p < 0.05 / ** = p < 0.01 / *** = p < 0.001), indicating differences between the infested vs uninfested (control) site during a) strong frass activity and b) light frass activity

Table 2: Mean concentrations values (mg l^-1) of total and dissolved carbon (TOC, DOC) and total and dissolved nitrogen bounded (TNb, DNb) in the throughfall solutions during strong frass activity (3 months: May, June, July) and less frass activity (4 months: April, August, September, October), both compared with mean concentrations of the control site based on the same time frame.