12750 – Plant Materials for Crater Lake National Park Revegetation Project

Investigator’s Annual Reports (IAR’s) for Crater Lake National Park

Plant Materials for Crater Lake National Park Revegetation Project


Report Number: 12750

Permit Number: CRLA1994AMDJ

Date Received: Jan 01, 1998

Reporting Year: 1994

Principal Investigator: Theresa Flessner, USDA Soil Conservation Service, Plant Materials Center, Corvallis, Oregon

Additional investigator(s): Mr Dale Darris, Ms Joan Trindle

Park-assigned Study Id. #: CRLA1994AMDJ

Permit Expiration Date: Jan 01, 1998

Permit Start Date: Jan 01, 1998

Study Starting Date: Jan 01, 1991

Study Ending Date: Jan 01, 1995

Study Status: Completed

Activity Type: Other

Subject/Discipline: Restoration – Natural

Objectives: To collect, evaluate, and increase new plant materials for the Rim Village revegetation project.

Findings and Status: Plants were successfully established from seed for all species studied except manzanita: seed remained viable but dormant after acid scarification and 4 months cold strat. For test plots some grass species established and grew better with incorporation of organic matter and slow-release fertilizer. The effect of straw netting was mixed. Treated plots produced acceptable stand cover for revegetation/soil stabilization purposes.

For this study, were one or more specimens collected and removed from the park but not destroyed during analyses? No

Funding provided this reporting year by NPS: 37300

Funding provided this reporting year by other sources: 0

Full name of college or university: n/a

Annual funding provided by NPS to university or college this reporting year: 0


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