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##   In a recently published study, FORT scientists and collaborators synthesize data from 26,729 post-burn vegetation plots to determine the effects of fire and climate on non-native plant invasion

      By Fort Collins Science Center      February 26, 2024    

This publication examined patterns and predictors of non-native plant invasion following fire across the western United States by synthesizing data from 26,729 vegetation plots measured after they were burned. 

Read the full publication: Non-native plant invasion after fire in western USA varies by functional type and with climate

The authors found that non-native plant cover was higher in plots measured after wildfires compared to prescribed burns or unburned plots. Cool-season short-lived grasses, such as cheatgrass, composed most of the non-native post-fire vegetation. 

Climate variables were the most influential predictors of the cover of non-native short-lived grasses and forbs after fires, with invasion being more common in areas with drier summers and a higher proportion of yearly precipitation falling in October through March. 

Models using future projected climate for mid (2041–2070) and end (2071–2100) of century showed a potential for increasing post-fire invasion risk at higher elevations and latitudes. These findings highlight priorities for mitigation, monitoring, and restoration efforts to reduce post-fire plant invasion risk across the western United States.

Learn More: Prevéy, J.S., *et al.* Non-native plant invasion after fire in western USA varies by functional type and with climate. *Biol Invasions* (2024). https://doi.org/10.1007/s10530-023-03235-9

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### Contacts

#### Janet Prevéy, PhD

##### Research Ecologist

Fort Collins Science Center

jprevey@usgs.gov

970-226-9249

#### Catherine S. Jarnevich, PhD

##### Research Ecologist

Fort Collins Science Center

jarnevichc@usgs.gov

970-226-9439

#### Ian Pearse, PhD

#####  Research Ecologist

Fort Collins Science Center

ipearse@usgs.gov

970-226-9145

#### Seth Munson, Ph.D.

##### Research Ecologist

Southwest Biological Science Center

smunson@usgs.gov

928-556-7301

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