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Japanese knotweed is seen in flower. Yellowish-white flower spikes appear in August and September, making now the best time of year to identify and report occurrences of this invasive species.
Abby Deneau points out a large patch of invasive knotweed on Tuesday, Aug. 2, 2022, at Grand Woods Park in Lansing. Michigan's invasive species watchlist includes information on several bugs ...
Eastern hemlock is the most common conifer in many northeastern forests. [10] The loss of these species from the forest represents a loss of the contributions they made to the function of the ecosystem. Co-existing tree and plant species will gain in the void left by the affected species, but often providing different functions.
The economic impacts of invasive species can be difficult to estimate especially when an invasive species does not affect economically important native species. This is partly because of the difficulty in determining the non-use value of native habitats damaged by invasive species and incomplete knowledge of the effects of all of the invasive species present in the U.S. Estimates for the ...
Michigan's Upper Peninsula is bounded on land by Wisconsin to the southwest and west; and in territorial waters by Minnesota to the west, Ontario to the west, north and east, and the Door Peninsula of Wisconsin extends into Lake Michigan east of the western Upper Peninsula. Five Michigan Upper Peninsula counties include nearby major islands ...
The Michigan Invasive Species Program asks that people report sightings of lesser celandine, which can be confused with Michigan's native marsh-marigold, to the Midwest Invasive Species ...
Invasive earthworms have caused a decrease in diversity, seedling populations, forest floor organic matter volume, and overall habitat quality. In addition, there is often an increase in invasive species and a decreased diversity of non-plant organisms. Some species that provide important biological niches to the ecosystem may be eradicated.
These factors give an upper hand, which will allow the invader to outcompete the native plants. For example, a study conducted in the Mojave Desert of California by Smith et al. in 2006, found that invasive grass species increase in areas with higher concentrations of carbon dioxide (CO 2 ), especially in arid conditions which make up 20% of ...