“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Cambridge in Dorchester County, Maryland — The American Northeast (Mid-Atlantic)

Muskrat and Nutria

Blackwater National Wildlife Refuge

Muskrat and Nutria Marker image. Click for full size.
Photographed By Don Morfe, October 28, 2014
1. Muskrat and Nutria Marker
A Tail of Two Rodents
Blackwater National Wildlife Refuge is home to the muskrat and, until recently, the nutria, both members of the rodent family. The muskrat is native to the area while the nutria was introduced from South America in the 1940s to expand the fur industry. Larger and more aggressive, the nutria out-competed the muskrat for resources.

Water Loving Rodent
Historically, the muskrat has played an important role in the marsh. By grazing on vegetation, it helped to maintain open areas, providing habitat for waterbirds and other wildlife. Its population is kept in check by predators.

Muskrat *name comes from the musk like odor it emits *an excellent swimmer *uses its vertically flattened tail to steer through the water *folds of skin seal off its inner ear when underwater *typically weighs no more than 2 ½ pounds *eats roots, stems, and shoots of cattails and sedges *uses marsh plants to build its dome-shaped lodge *serves as prey for larger mammals

Marsh Nuisance
Originally valued for its fur, the nutria is now considered a pest. Over time, its population exploded due to increasingly

Muskrat and Nutria Marker image. Click for full size.
Photographed By Don Morfe, October 28, 2014
2. Muskrat and Nutria Marker
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milder winters, less demand for pelts, and a lack of natural predators. After destroying several thousand acres of Blackwater River marsh, large numbers of nutria were eradicated from the refuge. Nutria *consumes nearly Ό its weight each day! *has destructive eating and burrowing habits *prolific breeder *resembles a beaver but with a rat-like tail *can weigh up to 20 pounds *dines primarily on the roots of marsh vegetation *no natural predators in Maryland * burrows in banks, under roads, and into muskrat lodges.

In 2002, a partnership of federal, state, and private organizations began a pilot project to eradicate the nutria. With the help of professional wildlife specialists, a systematic trapping and hunting program essentially eliminated the species from Blackwater NWR by 2006. The same techniques are being used today, with the goal of eradicating nutria populations across the Delmarva peninsula by 2014.
Topics. This historical marker is listed in these topic lists: AnimalsEnvironment. A significant historical year for this entry is 2002.
Location. 38° 26.25′ N, 76° 5.55′ W. Marker is in Cambridge, Maryland, in Dorchester County. Marker is on Observation Acess Road. The marker is one of three located in the kiosk. It is the one on the far right. Touch for map. Marker is in this post office area: Cambridge MD 21613, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured

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as the crow flies. The American Bald Eagle (here, next to this marker); The Chesapeake Bay Ecosystem (here, next to this marker); Pool One at Wildlife Drive (approx. 0.4 miles away); Delmarva Peninsula Fox Squirrel (approx. 0.9 miles away); Why Use Native Plants? (approx. 1.6 miles away); Welcome to Blackwater National Wildlife Refuge (approx. 1.6 miles away); a different marker also named Welcome to Blackwater National Wildlife Refuge (approx. 1.6 miles away); Blackwater National Wildlife Refuge-Taking Refuge from Slavery (approx. 1.6 miles away). Touch for a list and map of all markers in Cambridge.
Credits. This page was last revised on June 16, 2016. It was originally submitted on November 24, 2014, by Don Morfe of Baltimore, Maryland. This page has been viewed 298 times since then and 14 times this year. Photos:   1, 2. submitted on November 24, 2014, by Don Morfe of Baltimore, Maryland. • Bill Pfingsten was the editor who published this page.

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Jun. 27, 2022