"Following the recession of glacial ice, earthworms have been recolonizing, but Last Ice Age, glaciers reached as far south as the Ohio River Valley.
Tim McCay, chair of the Department of Biology at Colgate University. "Earthworms were lost from northern latitudes during glaciation," says Dr. They came in the soil around imported plants and in the dirt used for ballast in ships, filling a very real vacuum in some parts of the continent. But perhaps none is as surprising as this one: many species of earthworm, including the redworm and the common earthworm, or nightcrawler, aren't native. Dandelions, honeybees, starlings and kudzu, just for starters, are all imports. Many plants and animals we take for granted weren't part of the landscape that greeted the first Europeans who settled in America. April/March 2015For Wildlife Watchers: Earthworm by Rob Simbeck, photo by Dan GarberĮarthworms are sold as fish bait and pet food, and for composting and gardening.
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