Assessing watermilfoil invasion effects on native macrophyte communities in North American lakes using a novel approach for macrophyte sampling | Knowledge and Management of Aquatic Ecosystems

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Table 4

Pairwise Mann-Whitney tests for OSR under each set of submerged canopy species.

	M. heterophyllum		M. spicatum		P. amplifolius		P. robbinsii

	W	p	W	p	W	p	W	P
M. spicatum	322.5	0.369
P. amplifolius	285.0	0.404	18.5	0.118
P. robbinsii	437.0	0.563	50.0	0.860	48.0	0.449
U. purpurea	365.0	<0.001^*	21.5	0.002^*	42.0	0.226	203.0	0.002^*

*Indicates significant relationships.

Significance adjusted for ties. M. heterophyllum n = 22, M. spicatum n = 5, P. amplifolius n = 4, P. robbinsii n = 15, U. purpurea n = 26.

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