24750 – Inventory of Amphibians and Reptiles Klamath Parks Network Inventory and Monitoring Program

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

Inventory of Amphibians and Reptiles Klamath Parks Network Inventory and Monitoring Program


Report Number: 24750

Reporting Year: 2002

Permit Number: CRLA-2002-SCI-0010

Current Status: Checked in

Date Received: Mar 31, 2003

Principal Investigator: Dr Bruce Bury, Forest and Rangeland, Ecosystem Science Center, Corvallis, OR

Additional investigator(s): Karen Wegner, Larry Gangle, Ryan Ross, Sean Litrakis

Park-assigned Study Id. #: CRLA-02031

Permit Expiration Date: Dec 31, 2003

Permit Start Date: Jun 01, 2002

Study Starting Date: Jun 01, 2002

Study Ending Date: Dec 31, 2003

Study Status: Continuing

Activity Type: Inventory

Subject/Discipline: Herpetology (Amphibians / Reptiles)

Objectives: (1) To efficiently document the occurrence of the herpetofauna in Crater Lake National Park. We will conduct surveys for species and specialized habitats for known or suspected taxa in the park.

(2) To develop distribution and abundance data for species of special concern regionally such as the Cascades frog and western toad.

(3) To document biodiversity in wetland and aquatic habitats of the parks.

Findings and Status: From 9-12 August 2002, we conducted 14 time-constrained searches (each 2 person-hrs long) with an emphasis on reptiles. These yielded observations of 3 sagebrush lizards, 12 Cascade frogs,and 1 Pacific treefrog. Except visit to a few wet areas (that had the amphibiasn noted), most time was spent in lava fields or open terrain. We were in search of the Short-horned lizard and other reptiles, which have been reported from few records in the park. Although no horned lizards were observed, we found its typical scat (i.e., mostly ant parts) because horned lizard mostly eat ants.

In 2003, we intend to conduct further surveys for reptiles as well as conduct searches along park streams for Cascade frogs and other amphibians.

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: 2000

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


<< previousnext >>