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USDA's Plant Protection and Quarantine (PPQ) continuously takes steps to enhance our ability to exclude, control, and eradicate pests and increase the safety of agricultural trade. Across the country, PPQ worked with the States and other partners to detect, contain, and when possible, eradicate invading pests. On the world stage, PPQ worked closely with our international trading partners to develop and promote science-based standards, helping to create a safe, fair, and predictable agricultural trade system that minimizes the spread of invasive plant pests and diseases. Learn about the many successes and accomplishments captured in the 2018 report (APHIS 81-05-021) and how PPQ is working every day to keep U.S. agriculture healthy and profitable.

Quagga and zebra mussels have spread rapidly across the country since they were first discovered in the late 1980s and, according to U.S. Army Corps of Engineers officials, have spread to every major river basin in the U.S. except the Columbia River Basin in the northwest. The mussels typically are spread by recreational watercraft such as boats, canoes, and Jet Skis that have been in infested waters. Once established in a water body, the mussel species are extremely difficult to eradicate because they have no natural predators in the U.S. and rapidly reproduce.

GAO was asked to examine efforts the Corps has undertaken to prevent the spread of aquatic invasive species into the Columbia River Basin by recreational watercrafts. This report [PDF, 3.24 MB] provides information on the Corps' Watercraft Inspection and Decontamination Program and its role in helping to prevent the introduction or spread of quagga and zebra mussels—the aquatic invasive species of greatest concern to the Corps—as well as program challenges and opportunities for improvement.

The yield losses attributed to Asian citrus greening disease once established can be devastating. If the disease continues to spread unabated in the citrus growing regions of East Africa, the annual value of lost production could potentially reach up to US $127 million over the next ten to 15 years, according to a recent paper published by CABI. The paper, The Asian Citrus Greening Disease (Huanglongbing): Evidence Note on Invasiveness and Potential Economic Impacts for East Africa (Jun 2021) [PDF, 2.9 MB], provides a review of the global literature on Asian citrus disease or huanglongbing (HLB) and estimates its potential economic impact on East Africa. The paper also makes recommendations for biosecurity preparedness, surveillance and management options to help decision-makers and citrus growers.

The 2021 independent State of Environment Report has highlighted that invasive species are identified as the most prevalent threat to Australian wildlife and are the primary cause of extinction events. The report warns of the compounding and devastating impact of multiple threats to Australia’s environment.

A new report, Fighting Plagues and Predators: Australia’s Path to a Pest and Weed-Free Future [PDF,  12 MB], reveals the environment is facing a "sliding doors" moment, with two possible futures for Australia, depending on the decisions made today. It highlights a looming wave of new extinctions and outlines two futures for Australia, one based on an unsustainable ‘business as usual’ approach and the other based on implementing targeted actions that will help save our unique biodiversity. The report pegs the conservative cost of damage caused by invasive species in Australia – predominantly weeds, feral cats, rabbits and fire ants – at $390 billion over the past six decades and around $25 billion each year and growing.

This funding guide includes information on DOI funding opportunities that could support projects that manage invasive species (e.g., prevention, detection, control/eradication, restoration). It is important to note that information is subject to change. All funding opportunities are subject to the availability of appropriated funds; a program that is listed may not offer funding in any given year. The guide is a starting point. Other DOI funding opportunities may exist that are not included here or that are broader in scope yet could be appropriate for invasive species management. This product helps to advance implementation of the DOI Invasive Species Strategic Plan by increasing awareness of Interior's financial assistance programs that may be available to fund invasive species management activities.
See also: DOI Invasive Species Coordination for related information

Grass carp, one of four species of Asian carp, has the potential to disrupt the Great Lakes ecosystem and economy unless their spread is stopped, according to a report released by Fisheries and Oceans Canada with support from the Great Lakes Fishery Commission and the Ontario Ministry of Natural Resources and Forestry. The socio-economic study concludes that, in addition to the significant ecological threat that is posed by the presence of grass carp in the Great Lakes, there would also be economic, social and cultural ripple effects.
See also: Full report for the Socio-Economic Risk Assessment of the Presence of Grass Carp in the Great Lakes Basin [PDF, 1.34 MB].

Invader Detectives has been conceptualized as a national program to facilitate the detection of invasive species in urban environments. The majority of invasive species enter the country through the large commercial sea ports and airports located in our Nation’s cities. If we can rapidly detect and respond to potentially harmful non-native species at or near our borders, we can prevent them from spreading to natural areas and agricultural landscapes. Ultimately, this Contractor’s Report is intended to serve as the conceptual framework for developing and implementing Invader Detectives on a national scale through a chapter-based (regional) model. It is a living document and should not be regarded as final guidance. We welcome your input at invasive_species@ios.doi.gov.
See also: NISC and NISC Staff Products for more resources.

Montana’s economy could see more than $230 million in annual mitigation costs and lost revenue if invasive mussels become established in the state, according to a report released by the Montana Invasive Species Council (MISC). Commissioned by MISC and completed by the University of Montana Flathead Biological Station, the economic impact study provides “a snapshot of projected direct costs to affected stakeholders dependent on water resources,” said Bryce Christiaens, MISC chair. “It does not reflect the total economic impact to the state, which would be considerably higher.” View a one-page fact sheet [PDF, 484 KB] or the full report [PDF, 4.0 MB].

Produced by: Biological Resources Division (BRD), Invasive Plant Program (IPP) and Denver Service Center.
The NPS is working to manage invasive species on park lands through a suite of national and local programs including the NPS Invasive Plant Program (IPP). This strategic plan sets the course for the IPP by articulating a mission, vision, goals, and actions for the next ten years with near-term goals that will be reported on and revisited annually. The plan will guide annual work planning and major projects and identify and help prioritize program funding needs and initiatives.

The Oregon Invasive Species Council is pleased to share Invasive Species Threats & Opportunities: A Primer for Oregon Policymakers. The primer includes an overview of the importance of prevention and rapid response to avoid widespread consequences, examples of invasive species of concern across the state and the pressing invasive species threats within the geographic regions of Oregon, an overview of the state invasive species programs and lead state agencies, and more. This publication was developed through a collaborative effort of the members of the Oregon Invasive Species Council to provide a briefing of selected serious threats from invasive species and opportunities to address these issues that span jurisdictions.

The Montana and Washington invasive species councils have joined forces to stop wild pigs from crossing borders. The two councils issued a report with recommendations and best management practices aimed at helping federal, state, provincial and local landowners manage wild pigs in the western United States and Canada. "Wild pig populations are expanding in the western provinces of Canada and in the United States." said Stephanie Criswell, coordinator of the Montana Invasive Species Council. "We are at a unique point in time where we can work together to prevent Canadian wild pigs from spreading across borders into unaffected states like Montana."

In early 2020, the two invasive species councils convened a working group of more than 40 federal, state and Canadian feral swine experts to discuss challenges and opportunities to prevent feral swine along interstate and international borders. Finalized this month, the report includes 22 recommendations that address five strategic areas of feral swine management. Recommendations include standardizing communications to the public, expanding monitoring networks by partnering with non-traditional organizations such as hunting groups, and formalizing notification protocols for reports that will be shared between state and provincial authorities along the international border. The complete report can be found at misc.mt.gov.

Forests are complex ecosystems. They are constantly changing as a result of tree growth, variations in weather and climate, and disturbances from fire, pathogens, and other stressors. A huge number of insects and diseases have the potential to negatively affect tree species in the U.S. 

The Forest Health Monitoring (FHM) Program produces annual national reports that present forest status and trends from a national perspective, introduce new techniques for analyzing forest health data, and summarize results from recently completed Evaluation Monitoring projects funded through the FHM national program.  The FHM tracks these ongoing changes — every year, across the nation — as a forest health check up. The annual reports contains short- and long-term forest health assessments for the continental U.S., Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands. Users can search reports and chapters by year (from 2001) or topic. Highlights and additional resources are also included.

The Aquatic Invasive Species Commission and key partners received input from and engaged in dialogue with key stakeholders, federal and state decision makers, and leading experts. Recommendations focus on modernizing marine fisheries laws, making strategic investments, and improving collaboration among federal, state, local, and tribal agencies. The purpose of this collaborative process was intended to assess the current threat from aquatic invasive species (AIS), explore gaps in public policy and funding, and offer recommendations for how AIS can be addressed more effectively at the federal, state, tribal and regional levels.
See also: The new report Report and Recommendations: Improving the Prevention, Eradication, Control and Mitigation of Aquatic Invasive Species (Feb 2023) [PDF, 908 KB]

New Zealand Parliamentary Commissioner for the Environment, Simon Upton, is calling for the Government to lift its game in protecting native ecosystems from the thousands of exotic plants spreading throughout Aotearoa New Zealand. “Rampaging weeds pose a deadly threat to our native ecosystems by smothering, outcompeting and preventing regeneration of native plants,” the Commissioner says in a report released today. The report, Space invaders: A review of how New Zealand manages weeds that threaten native ecosystems, explains that protecting our native ecosystems from being overrun by weeds not only helps our native taonga plants, but also saves crucial habitat our taonga fauna need to survive.

The Washington Invasive Species Council approved an updated statewide strategy to prevent invading plants and animals from taking hold in the state’s forests, waters and farms.

The strategy calls for a broad range of actions focusing on preventing new species from establishing here, educating the public and rapidly deploying when species are found to prevent their spread. The 5-year strategy (2020-2025) is available at Washington Invasive Species Council - Reports.