TNC Global Invasive Species Team page


	The Global Invasive Species Team

Introduction

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Although it resembles the native sugar maple (Acer saccharum), Norway maple can have negative impacts on areas it invades. Martin (1999) found densities were significantly lower below Norway maple canopies than below sugar maple. Overall seedling densities did not differ significantly, but when only seedling species other than Norway maple were considered, densities were significantly lower under Norway maple canopies. These data suggest that Norway maples can suppress recruitment of trees, particularly of other species. This figure is based on data from Martin (1999).

Slide 64

Center for Invasive Species and Ecosystem Health