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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Sampling a grassland site invaded by spotted knapweed in western Montana. Forest Service
ID: 403
An herbicide solution to knapweed

Station researchers evaluated the effects of a common herbicide treatment on grassland plants in western Montana to determine if and when suppre ...

Principal Investigator : Yvette K. Ortega

Invasive Species2011RMRS
Photo of Adult chipping sparrow banded to allow individual identification (photo by A. Benson) Aubree Benson, University of Montana
ID: 835
Invasive Plant Erodes Bird Song Diversity via Food Chain Effects

Although plant invaders are known for their negative effects on natural systems, the extent of these impacts is often unknown. Forest Service s ...

Principal Investigator : Yvette K. Ortega

Wildlife and Fish
Invasive Species
2015RMRS
Photo of Location of sites in western Montana sampled to determine the invasiveness and impact of 48 exotic plants in the bluebunch wheatgrass habitat type.  USDA Forest Service
ID: 830
Invasiveness and Impact of 48 Exotic Plant Species in Native Grasslands

This study quantified and ranked invasiveness and impact for 48 exotic plant species based on surveys over 20,000 square kilometers (12,427 squa ...

Principal Investigator : Yvette K. Ortega

Invasive Species2015RMRS
Photo of Herbicide treatment targeting the invasive plant, spotted knapweed, in Montana. U.S. Department of Agriculture Forest Service.
ID: 1185
The Bane of Weed Management: Secondary Invasions

Weed management can result in unintentional secondary invasion: an increase in non-target exotics following efforts to suppress targeted invasiv ...

Principal Investigator : Yvette K. Ortega

Invasive Species2016RMRS
Photo of U.S. Forest Service scientists use a greenhouse in Washington State to grow bluebunch wheatgrass as part of their current reciprocal transplant project. This project is one of the largest and most intensive projects of its kind ever attempted.
ID: 1401
The tortoise and the hare: Can the slow native plant win?

It has been suggested that exotic plants will be more successful than native plant species as a result of climate change. This is because exotic ...

Principal Investigator : Yvette K. Ortega

Invasive Species
Resource Management and Use
Water, Air, and Soil
2017RMRS