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

On August 5, the Washington Department of Fish and Wildlife (WDFW) received notification from a local wholesale aquarium company in Renton of possible invasive freshwater mussels on a shipment of Marimo moss balls (Aegagropila linnaei). Moss balls are a commonly used decorative algae in aquariums and water gardens. Lab testing confirmed the mussels were zebra mussels (Dreisena polymorpha), a prohibited aquatic invasive species in Washington that, if established in local waters, would be capable of causing significant infrastructure and environmental damage. Zebra mussels and a close relative, the quagga mussel, are not known to be established in Washington.

Washington state agencies are asking for your help to check your trees for signs and symptoms of invasive insects. Damaging invasive insect species, such as spotted lanternfly, longhorned beetles, and emerald ash borer, are emerging in their adult form. ate summer is often the peak time for these invasive insects to emerge from trees in their adult stage. If you see or suspect you see an invasive insect, report a sighting.

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) is announcing the implementation of Phase VII of the Lacey Act provisions. APHIS is finalizing the associated declaration requirement required by Congress for plant and wood products. In this phase, declarations will be required for all remaining plant product Harmonized Tariff Schedule (HTS) codes that are not 100-percent composite materials. Implementation of Phase VII will begin December 1, 2024.

If an importer imports items that contain plant products, but do not currently file a Lacey Act declaration, they likely will need to file under Phase VII. Phase VII includes the broadest range of items, items as varied as industrial or medicinal plants, handbags, plywood, laminated wood, tools, matches with natural wood stems, products of natural cork, products of bamboo and rattan, footwear and more. Plant and wood products included in past phases include timber, some furniture, essential oils, wood cases and trunks, and woodwind instruments and their parts and accessories.
See also: Lacey Act Phase VII Implementation: Frequently Asked Questions and Plant Protection Today: Lacey Act Phase VII Is Coming (Apr 27, 2023)

Laurel wilt disease has been spreading through the U.S. since 2002 and is fatal to tree species in the laurel family. Forest Service researchers are continuing to monitor the disease, search for treatment methods, and develop a better understanding of how it is affecting sassafras and other susceptible species.

The Laurel Wilt Public Dashboard story map – a collaboration between the Georgia Forestry Commission, multiple branches of the Forest Service, and other state forestry agencies – shows the annual spread of the disease. The story map shows that new detections occur mostly in the Coastal Plain, not in the Appalachian mountains where sassafras reaches its greatest sizes.

The short story of invasive fishes in Maryland.
See also: Report an aquatic invasive using Maryland Invasive Species Tracker (MIST); tool for the public to help the state track invasive species in its waterways.

The Maryland Department of Agriculture has taken a significant step in its ongoing efforts to control the invasive spotted lanternfly. The department has announced the expansion of its spotted lanternfly quarantine zone to include two new counties – Charles and Garrett – effective immediately. This quarantine restricts the movement of regulated articles that might contain the spotted lanternfly in any of its life stages, including egg masses, nymphs, and adults.

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) is asking the public to look for and report the Asian longhorned beetle (ALB). APHIS declares every August Tree Check Month and is asking you to look for this destructive, invasive beetle by checking trees on your property and in your community for damage. Left unchecked, the ALB can cause infested trees to die. August is an ideal time of year to look for the beetle and the damage it causes.

Provides a collation of best available research literature, research gaps, and a summary of published researchfor wildland fire and invasive species issues. NISC staff searched Google Scholar, USGS publications warehouse, USDA, FS TreeSearch, and AGRICOLA using keywords “invasive species”, “invasive species and fire”, “invasive species and wildfire” from 2000 to 2024. Most of the existing research explores the relationship between invasive plants, particularly grass species, and wildfire risk, fire regimes, impacts to native plant communities, and loss of wildlife habitats. These are living documents and will be updated on a regular basis.

Colorado Parks and Wildlife (CPW) announces additional zebra mussel veligers found in the Colorado River and Government Highline Canal after increased testing. With these additional detections, both the Highline Government Canal and the Colorado River meet the criteria for being considered “positive” for zebra mussels.
See also: Colorado Parks and Wildlife announced discovery of zebra mussels in the Colorado River and the Government Highline Canal (July 16, 2024), nearly two years after the invasive species was first detected in the state.