Category Archives: Invasive Species

MN DNR Updates Endangered and Threatened Species Lists

For the first time since 1996, the Minnesota DNR has updated the list of endangered and threatened animals and plants in the state, adding over 180 species. Listed species are categorized as either endangered, threatened or of special concern. The list is based on scientific field studies and public hearings held over the past year.…

Northern Forests Threatened by Global “Worming”

In the March 25 Minneapolis Star Tribune, Lee Frelich, director of the University of Minnesota’s Center for Forest Ecology notes that the lowly earthworm, often thought of as a friend to the backyard gardener, is actually a dangerous invasive. Earthworms threaten northern forests by eating the duff and litter of the forest floor. This causes…

Warming Water and Invasive Species Changing the Character of Quetico-Superior Lakes

The Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures.  According to an article in the Ely Timberjay, the surface water temperatures of Lake Superior increased approximately 6 degrees F between 1979 and 2006. This is significantly greater than regional atmospheric warming. How this change will impact biodiversity and the proliferation…

Climate Change and the Quetico Superior Wilderness

The St. Paul Pioneer Press warns that climate change will have a serious impact on the Midwest. Because the Quetico-Superior region is at a crossroads of forest communities: the boreal forest to the north, the broadleaf deciduous forest to the south and the oak savanna to the west, affects of climate change to ecosystems may…

“Savannification” Still Expected in North Woods

University of Minnesota forest ecologist Lee Frelich continues to foresee a transition from forest to savanna taking place at the margins of Minnesota’s north woods. Newly published research suggests that within the century, the climate and ancillary factors will make significant changes to the state’s prairie/forest border.Continue Reading

Invasive Spiny Waterfleas Discovered Near Boundary Waters

The Minnesota Department of Natural Resources (DNR) confirmed that spiny waterfleas were discovered by anglers in Burntside Lake near Ely last week. Burntside Lake is a popular entry point into motorless area of the Boundary Waters Canoe Area Wilderness. Water fleas are tiny, but pose threats to lake life. The animals can collect in masses…

Gypsy Moth Fight Begins Anew

Minnesota’s battle against the gypsy moth is ready to resume. The state’s Department of Agriculture is about to set 23,000 traps for the moths across the eastern border of Minnesota to note where new outbreaks of the invasive pest are occurring.Continue Reading

Gypsy Moth Numbers Increasing

The number of gypsy moths in northern Minnesota continues to rise, despite successful efforts to eradicate established populations of the exotic insect.

The Minnesota Department of Agriculture reported recently that it trapped 28,000 gypsy moths in the state in 2009, more than double the 2008 count.
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PolyMet Public Comment Meetings Set

Two public meetings to hear comments on the Draft Environmental Impact Statement for PolyMet Mining’s proposed copper-nickel mine near Babbitt have been scheduled, the Minnesota Department of Natural Resources and the U.S. Army Corps of Engineers announced.Continue Reading

Invasive Mussels Found Near Isle Royale

A colony of non-native mussels has been found in Isle Royale National Park’s Washington Harbor, park officials revealed yesterday. The discovery raises concern over the island park’s large native mussel populations.Continue Reading

Gypsy Moths Sprayed on North Shore

The Minnesota Department of Agriculture has sprayed pesticide this week along the North Shore to slow the spread of invasive gypsy moths. The agency applied BTK via aircraft near Tofte and Lutsen.Continue Reading

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