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European worms harming North American forest diversity - Duluth News Tribune

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New study shows surprising connection between deer and earthworms

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European earthworms reduce insect populations in North American forests

Forestry University of Toronto

Invasive earthworms of North America - Wikipedia

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coping with invasive jumping worms, with brad herrick of uw-madison - A Way To Garden

Research University of Toronto

Climate science goes underground to understand the implications for earthworms