Table 1.

The 14 species used in this study

	Growth form	Abbreviation
Alisma triviale Pursh.	M	Atr
Betula papyrifera Marshall.	W	Bpa
Carex lacustris Willd.	G	Cla
Carex utriculata F.Boott.	G	Cut
Carex stricta Lam.	G	Cst
Chamaedaphne calyculata (L.) Moench	W	Cca
Glyceria striata (Lam). A.Hitchc	G	Gst
Iris versicolor L.	G	Ive
Lythrum salicaria L.	H	Lsa
Phalaris arundinacea L.	G	Par
Phragmites australis (Cav.) Trin.	G	Pau
Sparganium chlorocarpum Rydb.	G	Sch
Typha latifolia L.	G	Tla
Vaccinium angustifolium Aiton.	W	Van

The growth forms are non-graminoid monocots (M), graminoid monocots (G), herbaceous dicots (H), and woody dicots (W).