Invasive Species - What's New on NISIC's Site

The 30th annual National Public Lands Day (NPLD) is on September 23, 2023! National Public Lands Day was established in 1994 and held annually on the fourth Saturday in September. This designated day is traditionally the nation's largest single-day volunteer effort and is focused on resilience and restoration. Volunteers can plant trees and native vegetation, build and refurbish trails, remove trash and invasive plants, repair bridges, restore historic structures, monitor endangered species, and restore habitats. Volunteer and find a NPLD event near you. See also:

• National Public Lands Day: 30 years of Care and Community (USDA, Forest Service)
• National Public Lands Day (DOI, National Park Service)
• National Public Lands Day (DOI, Bureau of Land Management)

Changing climate conditions have bearing on every aspect of biological invasions, in some cases worsening existing problems. Climate change is creating new pathways for invasive species to be introduced, such as shipping routes that open up as sea ice retreats. Warmer temperatures can allow existing invasive species to expand their range into habitat that is currently too cool. Similarly, impacts to native species and people may change if new conditions affect invasive species abundance. Climate change may make existing invasive species control tools less effective, such as aquatic barriers that require minimum water flows.

Is something attacking your boxwoods? Don’t wait! Check your boxwood plants for signs of the invasive box tree moth (Cydalima perspectalis) before it's too late. A box tree moth infestation is lethal to boxwood plants. Watch the video to learn more about what to look for and how to save your boxwood plant.

The yellow-legged hornet was first detected in the U.S. when a beekeeper close to Savannah, GA, found an unusual hornet on his property and reported it to the Georgia Department of Agriculture (GDA). On August 9, 2023, APHIS confirmed the University of Georgia’s identification of this insect as a yellow-legged hornet. Learn more about yellow-legged hornet lookalikes and how to report potential sightings of this new species.

Michigan’s invasive species watch list was recently updated to include two new species and remove another. Mountain pine beetle, a deadly threat to pine trees, and water-primrose, a fast-spreading aquatic plant, have been added to the watch list due to threats they pose to native ecosystems and industry. European frog-bit, originally listed in 2011, has been moved off the list of species of immediate concern and is now considered established in the state.

Environmental DNA (eDNA) has gone from new science on the block to a star of the show. With just a water, soil, or snow sample, ecologist Tommy Franklin and fellow scientists at the Rocky Mountain Research Station are detecting rare aquatic and terrestrial species by identifying the genetic material they leave behind.

Scientists at the Rocky Mountain Research station recently used eDNA to preserve headwater bull trout populations in a warming climate, track white nose syndrome — a killer bat fungus, and reveal the role of human transport in the spread of invasive northern pike in the Columbia River basin. A recent article highlights eDNA research at the station and features National Genomics Center Director Mike Schwartz.

The Asian Longhorned tick (ALT), which was first discovered in the United States in 2017 has now be found in 19 states including Virginia. Currently, there are 38 Virginia counties with established ALT populations. As ALT populations have increased, a concern for the health of livestock in affected areas has increased as well. ALT is a vector for the parasite Theileria orientalis Ikeda which can cause theileriosis in livestock, including cattle.

The Georgia Department of Agriculture (GDA) announced, in coordination with USDA and the University of Georgia, confirmation of the detection of a living yellow-legged hornet (Vespa velutina) in Savannah, Georgia. This is the first detection of a live yellow-legged hornet in the open U.S., which was confirmed on Aug 9, 2023. GDA is asking the public to report any sightings of the yellow-legged hornet, a non-native hornet species, that, if allowed to establish in Georgia, could potentially threaten honey production, native pollinators, and our state’s number one industry - agriculture. See more information about the yellow-legged hornet, including how to report sightings.

Researchers have been working on a solution to fight citrus greening disease and may have found one in the unique antibodies found in camels, llamas, and alpacas.

Fire-friendly grasses have invaded new habitats around the world. Five species (cheatgrass, cogon grass, gamba grass, molasses grass, and buffelgrass) are considered among the most problematic grasses, threatening to transform entire ecosystems.