An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Provides access to all site resources, with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source. Search Help
Over recent decades, globalization has led to an increase in the international flow of people and goods, bringing people together but also bringing together species that have never coexisted before. Species that are introduced and successfully colonize areas outside their natural ranges are considered ‘invasive’ and can have devastating impacts on species native to the region. Invasive species can cause the decline or extinction of native species, outcompeting them for food, water and space, preying upon them or introducing them to new diseases.
Report your catch of invasive fish species (northern snakehead, blue catfish, flathead catfish) in the Chesapeake Watershed for a chance to win great prizes! The Great Chesapeake Invasives Count is an annual angling-based effort (April 1, 2024-March 31, 2025) to provide important data to the Maryland Department of Natural Resources, USFWS, and other management agencies on what you're seeing on the water. Information related to the number of fish you catch during a given time, as well as the length and weight of the fish you catch is important to fishery managers. It is also vital to investigate the feeding habits of invasive fish to help understand the short and long-term impacts that their existence may cause on native species. It is important that the public recognizes the impacts that these species can have on our natural ecosystems, and does not continue the spread of these fish.
The arid and semiarid Great Basin of the western United States comprises parts of California, Nevada, Utah, Idaho, and Oregon and can variously be described by its hydrology, topography, or biology. Biologically, the area has been defined historically by the native sagebrush and shrubs that thrive in the dry valleys of the Sierra Nevada and Cascade Mountains. But, as a recent study undertaken by researchers at the University of Montana and the Department of Agriculture notes, these native plant communities are rapidly being colonized by nonnative annual grasses like cheatgrass (Bromus tectorum), red brome (B. rubens), and medusahead (Taeniatherum caput-medusae) to the detriment of wildlife and humans.
The Nature Conservancy works across state borders to preserve natural areas throughout the United States. And, the Conservancy is the leading conservation organization working around the world to protect ecologically important lands and waters for nature and people.
Something troubling is taking hold in Oregon. Strange, exotic plants and animals are showing up in places where they don't belong. They are invasive species, and they're taking over landscapes, driving native wildlife away, and making everyone from ranchers to fishermen to wildlife managers nervous. What are these invaders? Where do they come from? And what can we do to stop them?
Entomological Society of America. Entomology Today.
Spotted-wing drosophila (Drosophila suzukii), is an invasive fruit fly species that causes about $500 million in economic damage to fruit crops in the U.S. each year. A native to southeast Asia, it arrived in the U.S. in Hawaii in the 1980s and in the continental U.S. in California in 2008. It is now widespread through many parts of the U.S. and the world. In a new review article published last week in the Journal of Economic Entomology, Vaughn Walton, Ph.D., of Oregon State University and a multi-university team of experts have created a comprehensive look at how SWD management strategies are evolving to address these challenges.
The U.S. Department of Agriculture grant that funds part of Walton and colleagues SWD research stipulates that they work with industry influencers, and they have been doing this from the beginning. They bring technologies to industry and seek feedback on how well the technologies work in actual practice. "Federal funding is allowing us to listen to and serve our clients—the growers," Walton says. As the Journal of Economic Entomology paper details, many promising control strategies are being developed for this challenging and uniquely adaptable invasive species. With continued advances, researchers can hope that populations of SWD can be controlled and the damage they cause reduced.
Climate change means new and stronger weeds. In this video, University of Wisconsin-Extension weed specialist Mark Renz shows how climate change will turn some of our existing weeds such as Canada thistle into super weeds. Plus, a look at some new weed threats from the south.
Insects and diseases that are damaging and killing trees across the contiguous United States are reducing the ability of the nation's forests to capture and store climate-changing carbon dioxide, according to a new study. The study – published in the journal Frontiers in Forests and Global Change – found that forests damaged by insects sequestered 69% less carbon than undamaged forests. Those affected by disease sequestered 28% less carbon. In total, the study found that the damage currently being caused by insects and diseases across the contiguous US is reducing the sequestration potential of America’s forests by roughly 50 million tons of carbon dioxide each year – the equivalent of emissions from more than 10 million cars.
Kew's UK Overseas Territories (UKOTs) team recently returned from a successful launch of the Tropical Important Plant Areas project in the British Virgin Islands. Tropical Important Plant Areas (TIPAs) are target sites for plant and habitat conservation, identified by the presence of threatened species, threatened habitats and/or high botanical richness. Although TIPAs are not legal designations, they can inform the protection and management of sites for biodiversity conservation.
Invaders with strange sounding names are costing Americans billions of dollars each year. These invasive species will change the way we work and play in the outdoors.
A European aphid that is only known to eat invasive garlic mustard has recently been found in the Midwest. If you see garlic mustard with curled leaves or aphids, help researchers studying this insect by sending in a report. Because the aphids may help control invasive garlic mustard plants, they are working with citizen scientists to map their distribution.