A SMOTHERING THREAT, MLive, Nov 1, 2017“Stiltgrass can smother and outcompete native wildflowers, forbs and grasses,” said Eleanor Serocki, coordinator for the South by Southwest Corner Cooperative Invasive Species Management Area. “It’s been a major problem in other areas, so we have to work quickly to ensure it doesn’t become one here.”

Deer prefer native plants leaving lasting damage on forests, Science Daily, Oct 6, 2017When rampant white-tailed deer graze in forests, they prefer to eat native plants over certain unpalatable invasive plants, such as garlic mustard and Japanese stiltgrass. These eating habits lower native plant diversity and abundance, while increasing the proportion of plant communities made up of non-native species, according to a new study.

State finds new invasive weed, FreePress, Sept 2, 2017According to a news release from the Michigan Department of Natural Resources, Japanese stiltgrass has been positively identified on private property in Scio Township, near Ann Arbor in Washtenaw County. “This annual grass is considered highly invasive, taking hold in areas of disturbed soil along banks, roadways and woods,” said Greg Norwood, invasive species coordinator for the DNR’s Wildlife Division. “Seeds can be transported by water or on animals, and seeds can remain viable in the soil for three to five years. Because deer don’t feed on Japanese stiltgrass, it often takes over in areas where deer browse on native plants and leave open patches of soil.”

Deer Discovery: Invasive Plants Get Boost from too Many Deer, Smithsonian Insider, May 6, 2016A survey of the two study plots after 25 years revealed the density of Japanese barberry, wine raspberry and Japanese stiltgrass was much higher in the open plot. The presence or absence of deer, they found, was an excellent predictor of the abundance of exotic plant species.

Overabundant Suburban Deer, Invertebrates,and the Spread of an Invasive Exotic Plant, Wildlife Society Bulletin, 2011The differences observed in vegetation between exclosures is believed to reflect interactions between deer feeding patterns and the invasive Japanese stilt grass and unless deer density is reduced, it is likely that the exotic Japanese stiltgrass will continue to increase in abundance and native plant species will decrease.

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