Aquatic Habitats and Communities Active
The Pacific Northwest includes a patchwork of public lands managed by numerous state and federal agencies. Our research informs and supports these agencies as they conserve and manage native amphibian species, including pre- and post-treatment assessment, decision support, long-term monitoring, population translocation, and habitat restoration.
Many of the systems we work in have altered hydrological regimes, so a focus of our research is understanding native species relationships with timing and amount of water. Examples are studies of amphibian distribution and abundance relative to different water management scenarios and relationships with active beaver dams.
Below are other science projects associated with this project.
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.
Incidence of the fungus Batrachochytrium dendrobatidis in amphibian populations along the northwest coast of North America
Characteristics of Columbia spotted frog (Rana luteiventris) oviposition sites in northeastern Oregon, USA
Sampling protocol for monitoring abiotic and biotic characteristics of mountain ponds and lakes
Estimated ultraviolet radiation doses in wetlands in six national parks
Amphibian Research and Monitoring Initiative (ARMI): A successful start to a national program in the United States
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
Asymmetrical effects of introduced Bullfrogs (Rana catesbeiana) on native Ranid Frogs in Oregon
Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply
Wetland management for amphibians in the Willamette Valley
The endemic headwater stream amphibians of the American Northwest: Associations with environmental gradients in a large forested preserve
- Overview
The Pacific Northwest includes a patchwork of public lands managed by numerous state and federal agencies. Our research informs and supports these agencies as they conserve and manage native amphibian species, including pre- and post-treatment assessment, decision support, long-term monitoring, population translocation, and habitat restoration.
Many of the systems we work in have altered hydrological regimes, so a focus of our research is understanding native species relationships with timing and amount of water. Examples are studies of amphibian distribution and abundance relative to different water management scenarios and relationships with active beaver dams.
- Science
Below are other science projects associated with this project.
- 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.
- 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: 56Incidence of the fungus Batrachochytrium dendrobatidis in amphibian populations along the northwest coast of North America
No abstract available.AuthorsM.J. Adams, S. Galvan, D. Reinitz, Rebecca A. Cole, Sanjay Pyare, M. Hahr, P. GovindarajuluCharacteristics of Columbia spotted frog (Rana luteiventris) oviposition sites in northeastern Oregon, USA
Several western ranid frogs possess a unique strategy of breeding communally over a short temporal window and reusing oviposition sites between years. However, little is published on the characteristics of oviposition sites selected by these explosive breeders. The Columbia spotted frog (Rana luteiventris) is native to northwestern North America and is of conservation concern in the southern portiAuthorsChristopher A. Pearl, M. J. Adams, Wendy WenteSampling 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 GalvanEstimated 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. TonnessenAmphibian Research and Monitoring Initiative (ARMI): A successful start to a national program in the United States
Most research to assess amphibian declines has focused on local-scale projects on one or a few species. The Amphibian Research and Monitoring Initiative (ARMI) is a national program in the United States mandated by congressional directive and implemented by the U.S. Department of the Interior (specifically the U.S. Geological Survey, USGS). Program goals are to monitor changes in populations of amAuthorsGary M. Fellers, Erin Muths, C. Kenneth Dodd, D. Earl Green, William A. Battaglin, P. Stephen Corn, M. J. Adams, Alisa L. Gallant, Robert N. Fisher, Cecil R. Schwalbe, Larissa L. Bailey, Walter J. Sadinski, Robin E. Jung, Susan C. WallsDistribution 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. PearlAsymmetrical effects of introduced Bullfrogs (Rana catesbeiana) on native Ranid Frogs in Oregon
Introduced American Bullfrogs (Rana catesbeiana) have become widely established in the Pacific Northwest over the last century and are thought to be an important predator of native amphibians throughout the western United States. The Northern Red-Legged Frog (Rana aurora aurora) and Oregon Spotted Frog (Rana pretiosa) historically coexisted in portions of the Pacific Northwest now invaded by R. caAuthorsC.A. Pearl, M.J. Adams, R.B. Bury, B. McCrearyOptical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply
Few ecologists would dispute that exposure to high levels of ultraviolet-B radiation (UV-B) is detrimental to organisms. It is well established that UV-B has been a critical factor shaping the physiology (Blum et al. 1949, Hansson 2000), behavior (Pennington and Emlet 1986, van de Mortel and Buttemer 1998), and distribution (Williamson et al. 2001, Leavitt et al. 2003) of many aquatic species. RecAuthorsWendy J. Palen, Daniel E. Schindler, M. J. Adams, Christopher A. Pearl, R. Bruce Bury, S. A. DiamondWetland management for amphibians in the Willamette Valley
Introduction In the past two decades, scientists around the world have increasingly noted losses of amphibian populations. Many of these declines have occurred in protected areas like national parks, where the causes mostly remain mysterious. However, in multipleuse landscapes, resource managers frequently face more obvious conservation problems and must make decisions that will affect amphibiaAuthorsM. J. Adams, Christopher A. Pearl, R. Bruce BuryThe endemic headwater stream amphibians of the American Northwest: Associations with environmental gradients in a large forested preserve
We used a large forested preserve (Olympic National Park, USA) to examine the habitat associations of a unique and environmentally sensitive stream amphibian fauna: Ascaphus truei Stegneger, Rhyacotriton olympicus (Gaige) and Dicamptodon copei Nussbaum. We quantified the relative abundance of stream amphibians and compared them to physical, topographic, climatic and landscape variables. All threeAuthorsM. J. Adams, R. Bruce Bury