Table 5.

Fresh mass loss as a percentage (%) of the initial fresh mass (0 s) on balance with a closed hood for 60 s

Species	30 s	60 s
Alisma triviale	0.29±0.05	0.51±0.05
Betula papyrifera	0.39±0.09	0.88±0.20
Glyceria striata	1.17±0.11	2.10±0.07
Lythrum salicaria	1.43±0.61	2.46±1.05
Phalaris arundinacea	0.66±0.08	1.05±0.13
Phragmites australis	0.42±0.05	0.78±0.06
Typha latifolia	0.15±0.01	0.32±0.04
Vaccinium angustifolium	0.75±0.13	1.22±0.15

Mean values ±1 SE.