National Park Service

Upper Columbia Basin Network (UCBN)

Early Detection of Exotic & Invasive Plants

Dalmation toadflax is a common exotic & invasive plant
Dalmatian toadflax is a common exotic & invasive plant

Exotic & Invasive Plant Inventory Reports

Exotic & Invasive Plant Monitoring Protocol & Procedures

Lemhi Penstemon & Spotted Knapweed Monitoring Reports

For more information contact: Tom Rodhouse

Parks to Be Monitored

Importance / Issues

  • Invasive plants are one of the greatest threats to natural and cultural resources in all the Upper Columbia Basin Network parks.
  • Invasive exotic plant species are of concern given their ability to quickly expand into new areas, compete with and exclude native species, and alter ecosystem processes across multiple scales.
  • The management and control of invasive non-native species has been identified as a high priority issue within the National Park Service and is an accountable goal under the Government Performance Results Act of 1993.
  • Prevention and early detection of invasive plants is critical. Monitoring status and trend detection of a prioritized list of target invasive species is important and will be accomplished in a cost-effective approach that will rely heavily on integration with other terrestrial vegetation monitoring efforts.

Monitoring Objectives

Our approach to monitoring invasive weeds in the UCBN is to integrate the collection of weed frequency and abundance data with other UCBN vegetation monitoring protocols. We also report incidental observations of high priority or novel invaders collected while traveling among formal survey locations in parks, and make that information available to parks immediately, facilitating rapid management response.

Protocols supporting the formal collection of quantitative information on invasive weeds in the UCBN include sagebrush steppe vegetation, camas lily, aspen, and integrated riparian condition. We also have begun reporting on status and trend in the spotted knapweed infestation at BIHO as part of our Lemhi penstemon monitoring activities. The following objectives guide invasive weed monitoring efforts in the UCBN.

  • Detect incipient populations and new occurrences of selected invasive nonnative plants before they become established.
  • Estimate the status and trend of established target weed species frequency and abundance in UCBN parks.

⇑ To Top of Page

Last Updated: April 05, 2017 Contact Webmaster