1 / 14

An Assessment and Management Protocol for Arundo donax in the Salinas Valley Watershed

An Assessment and Management Protocol for Arundo donax in the Salinas Valley Watershed. by Alana J. Oakins May 2001. What is Arundo ?. invasive non-native species introduced in the 1800’s rated 1 of 5 top species of concern by CALEPPC many associated environmental problems. culm.

idalee
Download Presentation

An Assessment and Management Protocol for Arundo donax in the Salinas Valley Watershed

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. An Assessment and Management Protocol for Arundo donax in the Salinas Valley Watershed by Alana J. Oakins May 2001

  2. What is Arundo? • invasive non-native species • introduced in the 1800’s • rated 1 of 5 top species of concern by CALEPPC • many associated environmental problems culm rhizomes roots

  3. out-competes native vegetation inability to provide habitat and food for native species negatively affects stream flow and morphology water intensive Why Should We Care?

  4. What can we do? • federal, state and local “weed” laws (e.g. Clinton’s Executive Order and SB1740 & AB1168) • economic and ethical implications to different stakeholders like landowners, agricultural community, and nurseries • research (e.g. mapping studies)

  5. Study Objectives • to assess the feasibility of mapping Arundo using remote sensing • to offer a policy recommendation for Monterey County

  6. Assessing Arundo using Remote Sensing • Why map Arundo? -it’s the first step -locating made easier -assess quantity -assess invasiveness -gives future direction • Therefore… Can Arundo be differentiated from similar vegetation?

  7. Study Site Levee Road • near Gonzales, CA River-Gonzales Road Salinas River

  8. Methods • Acquired imagery…Color-IR • Groundtruthed the image • Created training classes • Trained computer in TnTmips (MicroImages, 1999) • Supervised classification

  9. Results -Arundo is significantly different than similar vegetation

  10. Mapped Arundo with an accuracy of 95% Salinas River Legend Green-Arundo Red-Willow Pink-Cottonwood Purple-Oak Yellow-Grasses and Shrubs White-Bare Ground Dark Blue-Water (deep) Light Blue-Water (shallow) *Black polygons-groundtruth data and training classes

  11. Discussion • use a Color-IR • nominal pixel size of 2 m • supervised classification • red and green light reflectance bands

  12. A proposed policy… • Arundo be included in the Monterey County Weed Management Plan • funds be allocated for further Arundo research (e.g. mapping entire infestation)

  13. An Effective policy... • completely understand why Arundo even exists in Monterey County • look to successful management examples as a guide • public and private collaboration

  14. Acknowledgements • Scott Hennessy • The Watershed Institute • Dr. Lars Pierce • Dr. David Takacs • Lee Johnson • Bruce Delgado

More Related