Christopher A Pearl
I am a Wildlife Biologist at the USGS Forest and Rangeland Ecosystem Science Center in Corvallis, OR.
I work on research and monitoring studies for a variety of aquatic and terrestrial species in the Pacific Northwest. I am particularly interested in restoration of wetland and riparian systems, herpetology, and interactions between native and invasive species.
Professional Experience
2001-Present: Wildlife Biologist, USGS Forest and Rangeland Ecosystem Science Center, Corvallis, OR
The Nature Conservancy
Faculty Research Associate, Oregon State University, Corvallis, OR
Education and Certifications
M.S., Environmental Studies, University of Oregon (1999)
B.S., Community Forestry and Horticulture, University of Vermont, Burlington, VT (1988)
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 19
No Result Found
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 69
Fire and amphibians in North America Fire and amphibians in North America
Information on amphibian responses to fire and fuel reduction practices is critically needed due to potential declines of species and the prevalence of new, more intensive fire management practices in North American forests. The goals of this review are to summarize the known and potential effects of fire and fuels management on amphibians and their aquatic habitats, and to identify...
Authors
D. S. Pilliod, R.B. Bury, E.J. Hyde, C.A. Pearl, P.S. Corn
Behavioral responses of anuran larvae to chemical cues of native and introduced predators in the Pacific Northwestern United States Behavioral responses of anuran larvae to chemical cues of native and introduced predators in the Pacific Northwestern United States
We compared behavioral responses of larvae of three Pacific Northwest anurans from different hydroperiods to water borne cues of native and introduced predators. Two native anurans (Pacific Treefrog, Pseudacris regilla, and Northern Red-Legged Frog, Rana aurora aurora) and introduced Bullfrogs (Rana catesbeiana) responded to water conditioned by native Redside Shiners (Richardsonius...
Authors
Christopher A. Pearl, M. J. Adams, Gerald S. Schuytema, A.V. Nebeker
Ambystoma gracile (Northwestern salamander) egg predation Ambystoma gracile (Northwestern salamander) egg predation
No abstract available.
Authors
Christopher A. Pearl
Rana cascadae (Cascade frog). Cannibalism Rana cascadae (Cascade frog). Cannibalism
No abstract available.
Authors
C.J. Rombough, D.J. Jordan, Christopher A. Pearl
Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest
Increased exposure to ultraviolet-B (UV-B) radiation has been proposed as a major environmental stressor leading to global amphibian declines. Prior experimental evidence from the U.S. Pacific Northwest (PNW) indicating the acute embryonic sensitivity of at least four amphibian species to UV-B has been central to the literature about amphibian decline. However, these results have not...
Authors
Wendy J. Palen, David E. Schindler, M. J. Adams, Christopher A. Pearl, R. Bruce Bury, S. A. Diamond
Ascaphus trueii (Tailed frog). Albinism Ascaphus trueii (Tailed frog). Albinism
No abstract available.
Authors
Christopher A. Pearl, D.J. Major, R. Bruce Bury
Predation by Oregon spotted frogs (Rana pretiosa) on Western toads (Bufo boreas) in Oregon, USA Predation by Oregon spotted frogs (Rana pretiosa) on Western toads (Bufo boreas) in Oregon, USA
Toads of the genus Bufo co-occur with true frogs (family Ranidae) throughout their North American ranges. Yet, Bufo are rarely reported as prey for ranid frogs, perhaps due to dermal toxins that afford them protection from some predators. We report field observations from four different localities demonstrating that Oregon spotted frogs (Rana pretiosa) readily consume juvenile western...
Authors
Christopher A. Pearl, M.P. Hayes
Bufo boreas (western toad). Predation Bufo boreas (western toad). Predation
No abstract available.
Authors
Christopher A. Pearl
Klamath-Siskiyou herpetofauna: Biogeographic patterns and conservation strategies Klamath-Siskiyou herpetofauna: Biogeographic patterns and conservation strategies
The Klamath-Siskiyou region of southwest Oregon and northwest California (USA) has some of the most complex landscape mosaics and plant communities in western North America, reflecting its marked diversity of precipitation and topography. With 38 native species of amphibians and reptiles, the Klamath-Siskiyou region has the most species-rich herpetofauna of any similarly sized mountain...
Authors
R. Bruce Bury, Christopher Pearl
Science and Products
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 19
No Result Found
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Filter Total Items: 69
Fire and amphibians in North America Fire and amphibians in North America
Information on amphibian responses to fire and fuel reduction practices is critically needed due to potential declines of species and the prevalence of new, more intensive fire management practices in North American forests. The goals of this review are to summarize the known and potential effects of fire and fuels management on amphibians and their aquatic habitats, and to identify...
Authors
D. S. Pilliod, R.B. Bury, E.J. Hyde, C.A. Pearl, P.S. Corn
Behavioral responses of anuran larvae to chemical cues of native and introduced predators in the Pacific Northwestern United States Behavioral responses of anuran larvae to chemical cues of native and introduced predators in the Pacific Northwestern United States
We compared behavioral responses of larvae of three Pacific Northwest anurans from different hydroperiods to water borne cues of native and introduced predators. Two native anurans (Pacific Treefrog, Pseudacris regilla, and Northern Red-Legged Frog, Rana aurora aurora) and introduced Bullfrogs (Rana catesbeiana) responded to water conditioned by native Redside Shiners (Richardsonius...
Authors
Christopher A. Pearl, M. J. Adams, Gerald S. Schuytema, A.V. Nebeker
Ambystoma gracile (Northwestern salamander) egg predation Ambystoma gracile (Northwestern salamander) egg predation
No abstract available.
Authors
Christopher A. Pearl
Rana cascadae (Cascade frog). Cannibalism Rana cascadae (Cascade frog). Cannibalism
No abstract available.
Authors
C.J. Rombough, D.J. Jordan, Christopher A. Pearl
Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest
Increased exposure to ultraviolet-B (UV-B) radiation has been proposed as a major environmental stressor leading to global amphibian declines. Prior experimental evidence from the U.S. Pacific Northwest (PNW) indicating the acute embryonic sensitivity of at least four amphibian species to UV-B has been central to the literature about amphibian decline. However, these results have not...
Authors
Wendy J. Palen, David E. Schindler, M. J. Adams, Christopher A. Pearl, R. Bruce Bury, S. A. Diamond
Ascaphus trueii (Tailed frog). Albinism Ascaphus trueii (Tailed frog). Albinism
No abstract available.
Authors
Christopher A. Pearl, D.J. Major, R. Bruce Bury
Predation by Oregon spotted frogs (Rana pretiosa) on Western toads (Bufo boreas) in Oregon, USA Predation by Oregon spotted frogs (Rana pretiosa) on Western toads (Bufo boreas) in Oregon, USA
Toads of the genus Bufo co-occur with true frogs (family Ranidae) throughout their North American ranges. Yet, Bufo are rarely reported as prey for ranid frogs, perhaps due to dermal toxins that afford them protection from some predators. We report field observations from four different localities demonstrating that Oregon spotted frogs (Rana pretiosa) readily consume juvenile western...
Authors
Christopher A. Pearl, M.P. Hayes
Bufo boreas (western toad). Predation Bufo boreas (western toad). Predation
No abstract available.
Authors
Christopher A. Pearl
Klamath-Siskiyou herpetofauna: Biogeographic patterns and conservation strategies Klamath-Siskiyou herpetofauna: Biogeographic patterns and conservation strategies
The Klamath-Siskiyou region of southwest Oregon and northwest California (USA) has some of the most complex landscape mosaics and plant communities in western North America, reflecting its marked diversity of precipitation and topography. With 38 native species of amphibians and reptiles, the Klamath-Siskiyou region has the most species-rich herpetofauna of any similarly sized mountain...
Authors
R. Bruce Bury, Christopher Pearl