TNC Global Invasive Species Team page


	The Global Invasive Species Team

Introduction

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Research by John Lacey and colleagues (1989) showed that more of the rain falling on soils covered with knapweed ran off - and presumably carried more soil particles - than ran off from soils supporting native bunchgrasses. This increased runoff may lead to higher sediment loads in nearby streams which could harm spawning salmon and other aquatic organisms. This figure is based on data from Lacey et al. (1989).

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Center for Invasive Species and Ecosystem Health