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 5

Mann-Whitney Pairwise tests showing species that have significantly different relationships with NSR.

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

	W	p	W	p	W	p	W	p
M. spicatum	318.0	0.536
P. amplifolius	281.5	0.272	18.5	0.118
P. robbinsii	425.0	0.838	51.0	0.929	48.5	0.418
U. purpurea	322.0	<0.001^*	17.0	<0.001^*	31.0	0.058	200.0	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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