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

The National Detector Dog Training Center trains specially selected dogs and their handlers to safeguard America’s agricultural and natural resources from harmful pests. These dog teams carry out a range of activities, from inspecting passenger baggage, cargo, and parcels at ports of entry to detecting certain invasive species in the environment. Together, they help protect our Nation's food crops, forests, farms, and environment.

Detector canines—trained by USDA's Plant Protection and Quarantine (PPQ) program—are ready to sniff out these damaging invasive pests to detect them early and prevent their spread. These highly trained dogs represent some of the recent successes of our Agricultural Detector Canines strategic initiative. Its goal is to expand the use of detector dogs to enhance domestic pest surveys, detect pests early, and facilitate the trade of U.S. agricultural products.

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.

Species from around the world that are "hitching a lift" on ships threaten Antarctica's pristine marine ecosystem.

National Invasive Species Awareness Week (February 24-28, 2025) is an international event to raise awareness about invasive species, the threat that they pose, and what can be done to prevent their spread. Representatives from local, state, federal, and regional organizations discuss legislation, policies, and improvements that can be made to prevent and manage invasive species via webinars. Across the country, partners hold public events to educate the public and elected officials about how they can help to stop the spread of invasive species. Register for free educational webinars on priority invasive species issues during NISAW.

Over the last year, MAISRC research teams have worked tirelessly in the field, lab, and at their computers to generate and analyze data that is informing evidence-based decisions from the end of your dock to the State Capitol. The incremental steps are making a difference, leading to big wins, and eventually to real-world solutions to aquatic invasive species problems. MAISRC is sharing past year's research highlights in the form of a story map—enjoy an interactive experience, watch project videos, click straight to project pages, and see exactly where research is happening on the map.
See also: 2022 Research Report and 2021 Research Report

In California's San Joaquin Valley, scientists from the Agricultural Research Service (ARS) have a sharpshooter, and the pathogen it spreads, in their crosshairs. ARS Scientists in California are devising strategies to combat pests that cause over $100 million in damage to the grape industry.
See also: Down on the Farm archives

This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book (17 Chapters), written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the U.S. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.
Note: Open access for book and chapters are also available via SpringerLink
Citation: Poland, Therese M.; Patel-Weynand, Toral; Finch, Deborah M.; Ford Miniat, Chelcy; Hayes, Deborah C.; Lopez, Vanessa M., eds. 2021. Invasive Species in Forests and Rangelands of the United States: A Comprehensive Science Synthesis for the United States Forest Sector. Heidelberg, Germany: Springer International Publishing. 455p.

Invasive species are notoriously challenging to track due to their ability to rapidly spread from one habitat to another, whilst their impacts on endangered species can be even more difficult to detect. Two new studies published in the journal Current Biology have now shown that it is possible to accurately identify a variety of animal species over distances of hundreds of metres by sampling environmental DNA (eDNA), or DNA traces shed by animals into the surrounding air.

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.

ARS researchers created a new tool, called Pathogen and Tree Fruit Health Map (PATHMAP), which will connect growers in different states and allow them to share important data regarding tree fruit diseases, disorders, and insect pests. This online interactive tool will enable growers to modify and adjust their pathogen and pest control programs based on real-time data, provide quick access to time-sensitive data, give them access to experts in the field, and provide access to previous years observations and track current diseases, disorders and pests.
See also: Down on the Farm archives