Final Report - Center for Invasive Plant Management

More documents

Recommendations

Info

Variation in the IREEG fiaction, but not the IRTG fraction, was significant through time(Table 3). and also had a low coefficient of variation (Figure 2b)" There was a 53.8% changebetween the lowest and highest average concentrations of [REEG. An initial decrease in theconcentration of IREEG occurred from May to June (Julian day 133 to 162), with IREEGconcentrations generally rising thereafter until October (Julian day 286). After October. theconcentration of IREEG again decreased (Figure 2b). The IRTG pattern through time wassimilar to that of the IREEG fraction (Figure 2b). However" due to large error bars of someIRTG data points, there was not enough power to observe a significant variance of the IRTGl0concentrations throu gh time.External arbuscular mycorrhizal (AM) hyphal length varied significantly through time(Table 3), with a large increase from late September to early October (Julian day 265 to 286),followed by a decrease in hyphal length through November (Julian day 286 to 334, Figure 3).15 The decrease in AM hyphal length at the end of the sampling period was similar to the demeaseobserved in the IREEG fraction. The percent change between the highest and lowest AM hyphallengths measured was 1079/o. Non-AM hyphal length did not vary significantly through time(Table 3).20Percent AM hyphal colonization decreased in November (Julian days 307 to 334), similarto the decrease in external AM hyphal length (Figures 3 and 4; Table 3). Percent vesiclecolonization did not vary significantly, while percent arbuscule colonization varied significantlythrough time (Table 3). with great fluctuation from May to the beginning of August (Julian dayst0
133 to 215), followed by a considerable decrease (Julian day 230;Figure 4) until the end of thesampling period. with colonization leveling out at 2% (Figure 4).Fine root length (>0.25 mrn diameter) changed significantly through time, while very fineroot length (
Page 1 and 2: Number of text pages: 22Number of t
Page 3 and 4: we measured glomalin concentrations
Page 5 and 6: oot length: SRL) over a season in t
Page 7 and 8: detection method for glomalin, the
Page 9: Pearson product-moment correlations
Page 13 and 14: study to study, due to varying fung
Page 15 and 16: exudates in soil. Perhaps root prod
Page 17 and 18: ReferencesAllen N{ F 1991 The Ecolo
Page 19 and 20: vesicular-arbuscular mycorrhizal fu
Page 21 and 22: Steinberg P D and Rillig M C 2003 D
Page 23 and 24: Figure captionsFigure 1. Average pe

Final Report - Center for Invasive Plant Management

Create successful ePaper yourself

Delete template?

Save as template?