1 / 19

False-brome: A threat to forest and prairie ecosystems

False-brome: A threat to forest and prairie ecosystems. Debbie Johnson Institute for Applied Ecology debbie@appliedeco.org. False-brome can: Replace native vegetation through competition for water, nutrients and light Displace associated species

abrial
Download Presentation

False-brome: A threat to forest and prairie ecosystems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. False-brome: A threat to forest and prairie ecosystems Debbie Johnson Institute for Applied Ecology debbie@appliedeco.org

  2. False-brome can: • Replace native vegetation through competition for water, nutrients and light • Displace associated species • Contribute directly to the decline of threatened and endangered species • Alter wildfire behavior • Diminish recreational values or alter access Taylor’s checkerspot butterfly Photo by Dana Ross

  3. False-brome Distribution in Oregon

  4. OSU McDonald-Dunn Forest closed canopy forest meadow

  5. Priority Species – McDonald Forest

  6. False-brome Management Plan Components • Survey Design • Forest-wide on permanent transects (repeat of 1993 survey method) • Containment • Reduce the amount of seed leaving the forest • Reduce the amount of false-brome in seed when logging occurs • Reduce the amount of seeds spread by recreationists • Reduce the amount of seeds spread by staff • Control • Treat post-harvest for three years in clearcut units • Eliminate isolated populations • Eliminate populations in and around special ecological areas • Education • Expand on Oak Creek kiosk interpretation; add boot-washer • Interpret road and trailside treatment project • Hold periodic field trips • Monitoring • Measure plots in control treatment areas • Remeasure forest-wide survey every 10 years See: Invasive Plant Management Plan for full text at www.cof.orst.edu/cf/forests/mcdonald/plan

  7. Restoration Principles • 1. Eliminate small populations using the most effective control technique known. • Focus control on the protection of special ecological areas and satellite populations initially, rather than the advancing front of the source population. • Educate staff, students, contractors, and recreationists .

  8. Soap Creek ~ 80 acres

  9. Difference in native species richness Decline in Brachypodium (%) -1 0 1 2 3 4 0 -20 -40 -60 -80 -100 -120 glyphosate/surflan (Oct) glyphosate/surflan (Oct) glyphosate (Aug) glyphosate (Aug) mow (Aug)/glyphosate (Oct) mow (Aug)/glyphosate (Oct) glyphosate (Sept) glyphosate (Oct) fusilade med/surflan (Oct) fusilade med/surflan (Oct) glyphosate/pend (Oct) glyphosate/pend (Oct) treatment fusilade med/pendulum (Oct) fusilade med/pendulum (Oct) fusilade high (Oct) fusilade high (Oct) fusilade high (Aug) fusilade high (Aug) fusilade high/pendulum (Oct) fusilade high/pendulum (Oct) fusilade high/pendulum (Aug) fusilade high/pendulum (Aug) fusilade low/pendulum (Oct) fusilade low/pendulum (Oct) fusilade med/pendulum (Aug) fusilade med/pendulum (Aug) control control

  10. www.appliedeco.org/reports

  11. Enemy release hypothesis is supported for pathogens, but not for insects as herbivory is higher in the invaded range • Seed pathogens control B. sylvaticum population growth rates in native range • Rapid evolution has occurred in resistance and water use efficiency • B. sylvaticum is a poor competitor in the sun, but in the shade it outcompetes E. glaucus, S. arundinaceus, D. californica. • Results from the lab of B. Roy, UO

  12. Resources False-brome Working Group Website www.appliedeco.org/invasive-species-resources/FBWG Middle Fork Willamette Watershed Council Invasive Plant Species Working Group http://www.mfwwc.org/nativeplants.html

  13. Training Lambs to be Weed-eaters Experiments on the efficiency of Ovis airies for use in the biological control of Brachypodium sylvaticum- a non-native bunchgrass Ryan Scholz- Junior; Animal Sciences/ Bioresource Research Dr. Howard Meyers- Professor; OSU Dept. Animal Sciences Dr. Deborah Clark- Sr. Instructor; OSU Biology Program

  14. Ryan Scholz

More Related