Invasive Species Program

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More than 6,500 nonindigenous species are now established in the United States, posing risks to native plants, animals, microorganisms, valued ecosystems, and human and wildlife health. In fact, the current annual environmental, economic, and health-related costs of invasive species exceed those of all other natural disasters combined.

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Nonindigenous Aquatic Species (NAS) Database

Nonindigenous Aquatic Species (NAS) Database

The NAS database is a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, distribution maps, and general in

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Robotic DNA Samplers to Detect Invasive Species

Robotic DNA Samplers to Detect Invasive Species

USGS researchers and their collaborators demonstrated the efficacy of using robotic environmental DNA samplers.

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USGS scientists study hundreds of invasive species.

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News

Date published: July 28, 2021

Fort Collins Science Center Ecologists Share Expertise on Invasive Species

Research Ecologists Amy Yackel Adams and Andrea Currylow present “Invasive Reptiles: Lizards, Treesnakes, and Burmese Pythons, Oh My!” lecture

Publications

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Year Published: 2021

Occurrence, fate, and transport of aerially applied herbicides to control invasive buffelgrass within Saguaro National Park Rincon Mountain District, Arizona, 2015–18

The spread of the invasive and fire-adapted buffelgrass (Cenchrus ciliaris L.) threatens desert ecosystems by competing for resources, increasing fuel loads, and creating wildfire connectivity. The Rincon Mountain District of Saguaro National Park addressed this natural resource threat with the use of glyphosate-based herbicides (GBHs). In 2010,...

Paretti, Nicholas V.; Beisner, Kimberly R.; Gungle, Bruce W.; Meyer, Michael T.; Kunz, Bethany K.; Hermosillo, Edyth; Cederberg, Jay R.; Mayo, Justine P.
Paretti, N.V., Beisner, K.R., Gungle, B., Meyer, M.T., Kunz, B.K., Hermosillo, E., Cederberg, J.R., and Mayo, J.P., 2021, Occurrence, fate, and transport of aerially applied herbicides to control invasive buffelgrass within Saguaro National Park Rincon Mountain District, Arizona, 2015–18: U.S. Geological Survey Scientific Investigations Report 2021–5039, 65 p., https://doi.org/10.3133/sir20215039.

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Year Published: 2021

Calcium concentrations in the lower Columbia River, USA, are generally sufficient to support invasive bivalve spread

Dissolved calcium concentration [Ca2+] is thought to be a major factor limiting the establishment and thus the spread of invasive bivalves such as zebra (Dreissena polymorpha) and quagga (Dreissena bugensis) mussels. We measured [Ca2+] in 168 water samples collected along ~100 river-km of the lower Columbia River, USA, between June 2018 and March...

Bollens, Stephen M.; Harrison, John A.; Kramer, Marc G.; Rollwagen-Bollens, Gretchen; Counihan, Timothy; Robb-Chavez, Salvador B.; Nolan, Sean T.

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Year Published: 2021

A chemical and bio‐herbicide mixture increased exotic invaders, both targeted and non‐targeted, across a diversely invaded landscape after fire

QuestionsInvasive‐plant treatments often target a single or few species, but many landscapes are diversely invaded. Exotic annual grasses (EAGs) increase wildfires and degrade native perennial plant communities in cold‐desert rangelands, and herbicides are thus sprayed to inhibit EAG germination and establishment. We asked how EAG target and non‐...

Lazarus, Brynne E.; Germino, Matthew J.