Michael J Adams
I lead the USGS Amphibian Research and Monitoring Initiative (ARMI) and the Herpetological Research Team at the Forest and Rangeland Science Center in Corvallis, Oregon
Research in my lab focuses on amphibian conservation issues. We are currently addressing issues such as invasive species, disease, land use change, and long-term monitoring design for amphibians in North America. We use a combination of comparative surveys and manipulative experiments to understand the factors affecting amphibian distribution and abundance.
Professional Experience
1997 - Present: USGS, Forest and Rangeland Ecosystem Science Center, Supervisory Research Ecologist, Corvallis, OR
Education and Certifications
Ph.D., Wildlife Science, University of Washington, Seattle, WA (1997)
B.S., Wildlife Biology, Colorado State University, Fort Collins, CO (1992)
Science and Products
Herpetological Research Team (FRESC)
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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.
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.
Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring
Integrating bioavailability approaches into waste rock evaluations
Taxonomic and geographic variation in oviposition by tailed frogs (Ascaphus spp)
Sampling protocol for monitoring abiotic and biotic characteristics of mountain ponds and lakes
The U.S. Geological Survey's Amphibian Research and Monitoring Initiative
Estimated ultraviolet radiation doses in wetlands in six national parks
Distribution patterns of lentic-breeding amphibians in relation to ultraviolet radiation exposure in western North America
Amphibian occurrence and aquatic invaders in a changing landscape: Implications for wetland mitigation in the Willamette Valley, Oregon
Evidence of decline for Bufo boreas and Rana luteiventris in and around the northern Great Basin
Diet of introduced bullfrogs (Rana catesbeiana): Predation on and diet overlap with native frogs on Daishan Island, China
Amphibian research and monitoring initiative: Concepts and implementation
Occupancy models to study wildlife
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
To request an interview, contact fresc_outreach@usgs.gov or call (541) 750-1030.
Science and Products
- Science
Herpetological Research Team (FRESC)
The Herpetological Research Team focuses on issues related to conservation and management of amphibians and other aquatic and semi-aquatic species. Among our current studies are effects of invasive species, disease, and land use change on the dynamics of amphibian communities to inform conservation and management decision making.Filter Total Items: 13 - Data
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: 23No Result Found - Multimedia
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.
- Publications
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: 107Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring
From 2001 to 2005, we studied the demography and seasonal movement of Oregon spotted frogs (Rana pretiosa) translocated into created ponds in Dilman Meadow in central Oregon. Our objectives were to inform future monitoring and management at the site, and to elucidate poorly known aspects of the species’ population ecology. Movement rates revealed complementary use of sites seasonally, with one smaAuthorsNathan D. Chelgren, Christopher A. Pearl, Jay Bowerman, M. J. AdamsIntegrating bioavailability approaches into waste rock evaluations
The presence of toxic metals in soils affected by mining, industry, agriculture and urbanization, presents problems to human health, the establishment and maintenance of plant and animal habitats, and the rehabilitation of affected areas. A key to managing these problems is predicting the fraction of metal in a given soil that will be biologically labile, and potentially harmful ('bioavailable').AuthorsJames F. Ranville, E. P. Blumenstein, M. J. Adams, LaDonna M. Choate, Kathleen S. Smith, Thomas R. WildemanTaxonomic and geographic variation in oviposition by tailed frogs (Ascaphus spp)
Tailed frogs (Ascaphus spp.) oviposit in cryptic locations in streams of the Pacific Northwest and Rocky Mountains. This aspect of their life history has restricted our understanding of their reproductive ecology. The recent split of A. montanus in the Rocky Mountains from A. truei was based on molecular differentiation, and comparisons of their ecology are limited. Our objectives were to provideAuthorsNancy E. Karraker, David S. Pilliod, M. J. Adams, Evelyn L. Bull, Paul Stephen Corn, Lowell V. Diller, Marc P. Hayes, Blake R. Hossack, Garth R. Hodgson, Erin J. Hyde, Kirk Lohman, Bradford R. Norman, Lisa M. Ollivier, Christopher A. Pearl, Charles R. PetersonSampling protocol for monitoring abiotic and biotic characteristics of mountain ponds and lakes
This document describes field techniques and procedures used for sampling mountain ponds and lakes. These techniques and procedures will be used primarily to monitor, as part of long-term programs in National Parks and other protected areas, the abiotic and biotic characteristics of naturally occurring permanent montane lentic systems up to 75 ha in surface area. However, the techniques and procedAuthorsRobert L. Hoffman, Torrey J. Tyler, Gary L. Larson, M. J. Adams, Wendy Wente, Stephanie GalvanThe U.S. Geological Survey's Amphibian Research and Monitoring Initiative
The Amphibian Research and Monitoring Initiative (ARMI) began in 2000 as an attempt by the United States Geological Survey to determine the status and trends of amphibians on federal lands in the United States and its territories. ARMI research focuses on determining causes of declines, if observed, developing new techniques to sample populations and analyze data, and disseminating information toAuthorsP. S. Corn, E. Muths, M.J. Adams, C. K. DoddEstimated ultraviolet radiation doses in wetlands in six national parks
Ultraviolet-B radiation (UV-B, 280–320-nm wavelengths) doses were estimated for 1024 wetlands in six national parks: Acadia (Acadia), Glacier (Glacier), Great Smoky Mountains (Smoky), Olympic (Olympic), Rocky Mountain (Rocky), and Sequoia/Kings Canyon (Sequoia). Estimates were made using ground-based UV-B data (Brewer spectrophotometers), solar radiation models, GIS tools, field characterization oAuthorsS. A. Diamond, P.C. Trenham, M. J. Adams, B. R. Hossack, R.A. Knapp, L. Stark, D. Bradford, P. S. Corn, K. Czarnowski, P. D. Brooks, D.B. Fagre, B. Breen, N.E. Dentenbeck, K. TonnessenDistribution patterns of lentic-breeding amphibians in relation to ultraviolet radiation exposure in western North America
An increase in ultraviolet-B (UV-B) radiation has been posited to be a potential factor in the decline of some amphibian population. This hypothesis has received support from laboratory and field experiments showing that current levels of UV-B can cause embryo mortality in some species, but little research has addressed whether UV-B is influencing the distribution of amphibian populations. We compAuthorsM. J. Adams, B. R. Hossack, R.A. Knapp, P. S. Corn, S. A. Diamond, P.C. Trenham, D.B. FagreAmphibian occurrence and aquatic invaders in a changing landscape: Implications for wetland mitigation in the Willamette Valley, Oregon
Despite concern about the conservation status of amphibians in western North America, few field studies have documented occurrence patterns of amphibians relative to potential stressors. We surveyed wetland fauna in Oregon's Willamette Valley and used an information theoretic approach (AIC) to rank the associations between native amphibian breeding occurrence and wetland characteristics, non-nativAuthorsChristopher A. Pearl, M. J. Adams, N. Leuthold, R. Bruce BuryEvidence of decline for Bufo boreas and Rana luteiventris in and around the northern Great Basin
A method is described for the analysis of polychlorinated biphenyl (PCB) compounds in tissue samples. Cleanup by hexane-aceto-nitrile partitioning and Florisil column chromatography are performed on samples before oxidative treatment to convert DDE to DCBP. PCB components are then determined semi-quantitatively by TLC. No prior separation of PCB from chlorinated pesticides is required. The lower lAuthorsW. Wente, M. J. Adams, Christopher A. PearlDiet of introduced bullfrogs (Rana catesbeiana): Predation on and diet overlap with native frogs on Daishan Island, China
We examined diet of introduced Bullfrogs (Rana catesbeiana) and three native frog species (Rana limnocharis, Rana nigromaculata, and Bufo bufo gargarizans) co-occurring at a group of ponds on Daishan Island, east of China, to gain insight into the nature of potential interactions between Bullfrogs and native frog species. For postmetamorphic Bullfrogs, aquatic prey items dominated volumetrically.AuthorsZhengjun Wu, Y. Li, Y. Wang, Michael J. AdamsAmphibian research and monitoring initiative: Concepts and implementation
This report provides the basis for discussion and subsequent articulation of a national plan for the Amphibian Research and Monitoring Initiative (ARMI). The authors were members of a task force formed from within the U.S. Geological Survey (USGS) that included scientists with expertise in biology, cartography, hydrology, and statistics. The assignment of the task force was to extend work begun byAuthorsP. S. Corn, M.J. Adams, W.A. Battaglin, Alisa L. Gallant, D.L. James, M. Knutson, C.A. Langtimm, J.R. SauerOccupancy models to study wildlife
Many wildlife studies seek to understand changes or differences in the proportion of sites occupied by a species of interest. These studies are hampered by imperfect detection of these species, which can result in some sites appearing to be unoccupied that are actually occupied. Occupancy models solve this problem and produce unbiased estimates of occupancy and related parameters. Required data (dAuthorsLarissa Bailey, Michael John AdamsNon-USGS Publications**
Adams, M.J., 1993, Summer nests of the tailed frog (Ascaphus truei) from the Oregon Coast Range: Northwestern Naturalist, v. 74, no. 1, p. 15-18.**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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