12752 – Bull Trout Restoration in Crater Lake National Park, Oregon

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

Bull Trout Restoration in Crater Lake National Park, Oregon

 

Report Number: 12752

Permit Number: CRLA1994AMDL

Date Received: Jan 01, 1998

Reporting Year: 1994

Principal Investigator: Mark Buktenica, National Park Service, Crater Lake, Oregon

Additional investigator(s): Dr Gary Larson

Park-assigned Study Id. # CRLA1994AMDL

Permit Expiration Date: Jan 01, 1998

Permit Start Date: Jan 01, 1998

Study Starting Date: Jan 01, 1994

Study Ending Date: Jan 01, 1994

Study Status: Completed

Activity Type: Other

Subject/Discipline: Fish / Ichthyology

Objectives: Restore native bull trout to historic numbers and distribution in Sun Creek, within the park, remove non-native brook trout, and prevent re-invasion of non-native species in the future.

Findings and Status: The number of adult bull trout counted in Sun Creek increased from approximately 58 adults in 1993 to 120 adults in 1994. This increase is in part a result of improved census techniques.

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: 37000

Funding provided this reporting year by other sources: 5000

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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