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Home / Invasive Species Resources

Invasive Species Resources

Provides access to all site resources (alphabetically), with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source.

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Pennsylvania Fish and Boat Commission.

The Pennsylvania Fish and Boat Commission (PFBC) is urging anglers to report and dispose of any invasive Northern Snakehead fish that may be caught in the lower Susquehanna River. This advisory follows the documented movement of 21 Northern Snakeheads past the Conowingo Dam into the Conowingo Pool, a 14-mile-long section of the Susquehanna River located between the Conowingo Dam in Maryland and the Holtwood Dam in Pennsylvania. Anglers are reminded that possession, transport, and importation of a live snakehead is unlawful in both Pennsylvania and Maryland. Any of these invasive fish that are caught should be killed and disposed of properly or consumed. Anglers who suspect they have caught a snakehead are encouraged to NOT release it, and report it to the PFBC at (610) 847-2442 or by sending an email to tgrabowski@pa.gov. For more information on Northern Snakeheads in Pennsylvania, including an identification guide, visit the PFBC snakehead resource page.

USDA. Animal and Plant Health Inspection Service.

The United States Department of Agriculture's Animal and Plant Health Inspection Service (APHIS) has analyzed the potential environmental effects of establishing an integrated management strategy to control cogongrass in Alabama, Georgia, Mississippi, and South Carolina. The draft environmental assessment is now available for comment. Cogongrass is an invasive exotic grass found on public and private property, along roadways, in forests, and on farmland. This federally regulated noxious weed grows rapidly, reducing forest productivity, harming wildlife habitat and ecosystems, and encroaching on pastures and hayfields. Because of cogongrass' impact on agriculture and forest industries, Congress has given APHIS funding to partner with Alabama, Georgia, Mississippi, and South Carolina to control the spread of this weed. APHIS is proposing is an integrated management strategy that uses preventive, cultural, mechanical, biological, and chemical methods to control cogongrass in key areas of its distribution. APHIS invites the public to review and comment on this environmental assessment by April 1, 2020.

USDA. Animal and Plant Health Inspection Service.

Effective immediately, the USDA's Animal and Plant Health Inspection Service (APHIS), in cooperation with the Alabama Department of Agriculture and Industries (ADAI), is establishing quarantines for Huanglongbing (HLB; citrus greening), caused by Candidatus Liberibacter asiaticus, in all of Baldwin and Mobile Counties in Alabama. APHIS is taking this action because of HLB detections in plant tissue samples collected in multiple locations in Alabama.

APHIS is applying safeguarding measures on the interstate movement of regulated articles from the quarantined counties in Alabama. These measures parallel the intrastate quarantine that ADAI established on June 2, 2020. This action is necessary to prevent the spread of HLB to non-infested areas of the United States.

USDA. Animal and Plant Health Inspection Service.

Effective May 11, 2021, the Animal and Plant Health Inspection Service (APHIS) and the New York State Department of Agriculture and Markets (NYS AGM) expanded the European cherry fruit fly (ECFF) quarantine to include all of Monroe County and Wayne County and a small portion of northwestern Ontario County, New York. With this expansion, the ECFF quarantine now includes all of Erie, Monroe, Niagara, Orleans, and Wayne Counties. This action is necessary to prevent the spread of ECFF to non-infested areas of the United States, while maintaining commercial cherry production and marketing within the state. The APHIS website reflects the expansion of this quarantine and contains a description of all the current federal fruit fly quarantine areas.

USDA. Animal and Plant Health Inspection Service.

Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is removing 45,562.067 acres from the golden nematode (GN) regulated area in Suffolk County, New York and refining the global positioning system (GPS) points for the descriptions of the regulated area in the town of Oyster Bay in Nassau County, New York. APHIS is removing these areas based on survey results and other criteria in the "Canada and United States Guidelines on Surveillance and Phytosanitary Actions for the Potato Cyst Nematodes, Globodera rostochiensis and Globodera pallida”.

Since 2010, APHIS, working closely with the New York State Department of Agriculture and Markets (NYS AGM), has removed 1,186,693.79 acres from the GN-regulated area in New York. APHIS and NYS AGM have an active control and mitigation program in place to prevent GN from spreading from the remaining 101,955.27 acres, including 5,945 GN-infested acres in eight New York counties. The specific GN-regulated areas are on the APHIS website.

Michigan Department of Natural Resources.

The Michigan departments of Natural Resources and Agriculture and Rural Development today announced the addition of beech leaf disease to the state's invasive species watch list. Invasive species on the watch list have been identified as posing an immediate or potential threat to Michigan's economy, environment or human health. These species either have never been confirmed in the wild in Michigan or have a limited known distribution. Beech leaf disease is associated with the microscopic worm Litylenchus crenatae, a nematode that enters and spends the winter in leaf buds, causing damage to leaf tissue on American beech and European and Asian beech species. Infestations result in darkened, thick tissue bands between leaf veins, creating a striped effect on the leaves, leaf distortion and bud mortality. Trees weakened by leaf damage become susceptible to other diseases and can die within six years. Beech leaf disease has not been found in Michigan. The disease was first discovered in Ohio in 2012. Since then, it has been identified in seven eastern states and Ontario.

New York State Department of Environmental Conservation.

The New York State Departments of Environmental Conservation (DEC) and Agriculture and Markets (DAM) today announced that although freezing temperatures will kill off adult spotted lanternflies (SLF), the public is urged to stay vigilant and report overwintering egg masses. In the fall, SLF will lay their eggs on any flat surface such as vehicles, firewood, outdoor furniture, stone or other items which can be inadvertently transported to new areas. If this insect becomes established in New York, it could impact New York's forests, agricultural and tourism industries. "To date, there has not been a documented spotted lanternfly infestation in New York, but I encourage the public to stay aware and be ready to report egg masses or other signs of this insect to help prevent infestations," said DEC Commissioner Basil Seggos.

Assistance from the public is crucial in limiting the movement of SLF and protecting New York's natural resources. DEC and DAM are urging the public to inspect outdoor items such as vehicles, outdoor furniture and camping equipment for egg masses or insects, and report any sightings by sending photos and location information to spottedlanternfly@dec.ny.gov. Anyone that visits locations of SLF quarantines in other states should look for and remove insects and egg masses on items before leaving those areas. For more information, please visit DEC's spotted lanternfly webpage.

Michigan Department of Natural Resources.

The Michigan departments of Environment, Great Lakes, and Energy and Natural Resources confirmed a report of didymo, a nuisance freshwater alga, in a stretch of the Upper Manistee River in Kalkaska County. Also known as rock snot despite its coarse, woolly texture, didymo can grow into thick mats that cover the river bottom. The Manistee River finding marks the first detection of didymo blooms in the Lower Peninsula. In 2015, extensive mats of didymo were found on the Michigan side of the St. Marys River near Sault Ste. Marie in the Upper Peninsula.

If you observe didymo in the water, either as small, cotton ball-sized patches or thick blankets with rope-like strings that flow in currents, take photos, note the location and report it by using the Midwest Invasive Species Information Network, available online at MISIN.MSU.edu or as a downloadable smartphone app. The MISIN smartphone app will take a GPS location point if a report is made at the site; it also will allow you to upload photos with a report. Find more information on didymo and how to identify it at Michigan.gov/Invasives.

USDA. Animal and Plant Health Inspection Service.

Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is issuing a Federal Order (Oct 14, 2021; PDF | 171 KB) that expands the existing imported fire ant (IFA) quarantine areas in North Carolina and Tennessee. APHIS is taking this action to prevent the interstate spread of IFA. APHIS is taking these actions based upon verification from the North Carolina Department of Agriculture and Consumer Services and the Tennessee Department of Agriculture’s Division of Consumer and Industry Services that IFA is present and established in the areas listed. For additional information on the Federal IFA regulatory program, please contact the IFA National Policy Manager, Herbert Bolton, at (301) 851-3594 or herbert.bolton@usda.gov.

Duke University. Nicholas School of the Environment.

Coastal marshes that have been invaded by feral hogs recover from disturbances up to three times slower than non-invaded marshes and are far less resilient to sea-level rise, extreme drought and other impacts of climate change, a new study led by scientists at Duke University and the University of Massachusetts Boston (UMB) finds. "Under normal circumstances, marshes can handle and recover from drought or sea level rise, given time, but there is no safety net in place for hog invasions," said Brian Silliman, Rachel Carson Distinguished Professor of Marine Conservation Biology at Duke, who co-authored the study.

Cornell University. New York Invasive Species Research Institute.

A cozy campfire for summer days, a warm fireplace for winter evenings– the use of firewood is an "established cultural norm". However, moving firewood from place to place can have devastating consequences, as it can spread forest pests that decimate forests to collectively cost an estimated $4.2 – $14.4 billion per year. In order to better address the problem of people moving firewood and vectoring forest pests, Solano and colleagues examined trends and gaps in the existing literature on firewood and human-mediated forest pest movement in North America. The existing literature demonstrates the risk of firewood movement, but fails to address the level of awareness the public has on such risks, or the level of effectiveness of firewood regulations to prevent forest pest spread.

Vermont Agency of Agriculture, Food, and Markets.

Many people in Vermont are encountering gypsy moths (GM) for the first time. This invasive species arrived in the United States over 100 years ago and has been expanding its range ever since. They can be significant defoliators (leaf eaters) of trees and shrubs. They prefer oak trees, but when there are a lot of caterpillars around they will eat any type of leaf, including maple and pine. Vermont has not seen an outbreak of GM since 1991. At that time a fungus called Entomophaga maimaiga became prevalent in the area and significantly decreased the GM population. But the dry weather that we’ve experienced over the last few years has not been good for fungi, and the absence of fungi has allowed the GM numbers to increase.

Michigan Department of Agriculture and Rural Development.

The Michigan Department of Agriculture and Rural Development (MDARD) is proposing an Exterior Firewood Quarantine (PDF | 192 KB) to prevent the introduction of unwanted plant pests and diseases into Michigan. Public comments on the proposal are due by Friday, November 19, 2021. Over 140 pests and diseases can be moved by firewood, including Asian long-horned beetle, mountain pine beetle and spotted lanternfly. These pests are not known to exist in Michigan but could be accidentally brought into the state by travelers transporting firewood.

Members of the public interested in providing feedback on this proposed quarantine can submit their comments to Mike Bryan, MDARD Export and Compliance Specialist by emailing BryanM@Michigan.gov. The deadline for comments is Friday, November 19, 2021. Additional information is available at Michigan.gov/Invasives and on MDARD's plant pest quarantine webpage.

Michigan Department of Natural Resources.

The governors of Illinois and Michigan today agreed to work jointly to protect the Great Lakes from invasive Asian carp species. Gov. Gretchen Whitmer and Gov. JB Pritzker today announced an intergovernmental agreement between the Illinois Department of Natural Resources (IDNR) and the Michigan Department of Natural Resources (MDNR) which allows Illinois to use up to $8 million in funds appropriated in 2018 by the Michigan Legislature to support the pre-construction engineering and design (PED) phase of the Brandon Road Ecosystem Project. Further strengthening the path forward, the State of Illinois also signed a separate PED agreement with the U.S. Army Corps of Engineers for the initial Brandon Road design. The state will serve as the non-federal sponsor, agreeing to help fund design of a portion of the project and to further advance full project design efforts to approximately 30 percent completion.

The Brandon Road Lock and Dam in the Chicago Area Waterway System near Joliet, Illinois, is a critical pinch point for keeping bighead, silver and black carp – the invasive Asian carp species of greatest concern – out of the Great Lakes. The Brandon Road project would install layered technologies including an electric barrier, underwater sound, an air bubble curtain and a flushing lock in a newly engineered channel designed to prevent invasive carp movement while allowing barge passage.

Michigan Department of Agriculture and Rural Development.

The Michigan Department of Agriculture and Rural Development (MDARD) is asking freight carriers, warehouse workers and delivery drivers to be on the lookout for invasive spotted lanternfly after the United States Department of Agriculture (USDA) confirmed dead spotted lanternfly insects were found in Michigan in recent weeks. While the specimens found were dead, these cases demonstrate one of the many ways this insect could find its way into the state. There is no evidence of established populations of spotted lanternfly in Michigan.

If you find a spotted lanternfly egg mass, nymph or adult, take one or more photos, make note of the date, time and location of the sighting, and report to the Michigan Department of Agriculture and Rural Development, MDA-Info@Michigan.gov or call MDARD's Customer Service Center, 800-292-3939. If possible, collect a specimen in a container for verification. For additional information on identifying or reporting spotted lanternfly, visit Michigan.gov/SpottedLanternfly.

Michigan's Invasive Species Program.

If your leisure-time plans include boating or fishing in Michigan, recent changes in Michigan’s Natural Resources and Environmental Protection Act (NREPA) may affect you. Beginning March 21, watercraft users in the state are required to take steps to prevent the spread of aquatic invasive species. Also, anyone fishing with live or cut bait or practicing catch-and-release fishing will need to take precautions to limit the movement of invasive species and fish diseases.

Michigan Department of Natural Resources.

For landscapes plagued by autumn olive or entangled in oriental bittersweet, a new website offers help identifying and managing woody invasive plants like these. WoodyInvasives.org, developed by the Woody Invasives of the Great Lakes Collaborative, contains a wealth of information about how to distinguish woody invasive species from similar beneficial plants, an interactive map showing how these species are regulated by Great Lakes jurisdictions, detailed management approaches and noninvasive woody plant ideas for gardeners and landscape designers. "We developed the WIGL Collaborative website to help people learn to identify the woody invasive plants around them and to feel empowered to start controlling them on their properties or in their favorite green places," said Clair Ryan, coordinator of the Midwest Invasive Plant Network, the organization leading the effort.

New York Invasive Species Awareness Week.

The mission of the New York Invasive Species Awareness Week (ISAW) is to promote knowledge and understanding of invasive species and the harm they can cause by engaging citizens in a wide range of activities across the state, and empowering them to take action to help stop the spread. This annual education campaign is comprised of various outreach initiatives and events led by partner organizations statewide. Activities include interpretive hikes, invasive plant removal, and restoration projects, displays, webinars, radio and television programming, and more.

New York State Department of Agriculture and Markets.

The New York State Departments of Agriculture and Markets (AGM) and Environmental Conservation (DEC), and the Office of Parks, Recreation, and Historic Preservation (Parks) today announced an innovative effort to combat the spread of Spotted Lanternfly (SLF) in New York State. A new online interface will allow volunteer members of the public to assist in surveying for SLF and tracking associated data. The program encourages broader surveying for SLF and increased public awareness of this invasive pest, following confirmed finds of SLF in New York State this past fall.

The new initiative, which launched this week, invites volunteers to sign up to survey a specific area, or grid, of land on iMapInvasives. This online, GIS-based data management system is used to assist citizen scientists and natural resource professionals to protect against the threat of invasive species. Volunteers will also enter data from their survey work into iMapInvasives. More information about the program, including upcoming webinars, can be found at https://www.nyimapinvasives.org/slf.

North Carolina Wildlife Resources Commission.

The N.C. Wildlife Resources Commission has unveiled a new online reporting tool for people to report any sightings of feral swine or their damage to the agency. Feral swine, also called wild boar and feral hogs, are an invasive species that cause significant damage to plant communities and wildlife habitat, prey on native wildlife, compete with native species for limited food and clean water resources and potentially spread diseases that pose substantial risk to livestock, wildlife, humans and pets. Commission biologists, along with other members of the N.C. Feral Swine Task Force, are seeking information from the public to better understand the distribution and abundance of feral swine across the state, and to estimate type and extent of damages they are causing, including damage to agricultural crops, timber, wildlife habitats, landscaping and others.

Reported sightings will help members of the task force determine priority areas where they can focus management efforts. Education and outreach events, technical assistance staff, loaner traps, and other control measures will be focused in areas of greatest need. For more information on feral swine in North Carolina, visit the Commission’s feral swine web page.