A new study suggests that at least in the forests of North America, earthworms may not be the slimy angels of the underworld we tend to think they are
The worms’ relentless tunneling, feeding, and pooping changes the physical, chemical, and biological properties of the soil, reshuffling the ecological deck in ways native species are not always able to cope with.To study this, Eisenhauer and, a postdoc in Eisenhauer’s lab and the paper’s lead author, conducted biological surveys in the forests surrounding a reservoir called Barrier Lake about 40 miles west of Calgary in Canada in the summer of 2019.
The results were surprising, Eisenhauer says. The study “shows how much aboveground communities depend on the soil and how big an impact underground invasive species can have.” “They are food for other larger animals and they perform key ecosystem functions like pest control, herbivory, and decomposition,” Jochum says., a soil ecologist at Saint Mary’s University in Canada who wasn’t involved in the study.
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