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.
Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest
Association of amphibians with attenuation of ultraviolet-b radiation in montane ponds
Pond permanence and the effects of exotic vertebrates on anurans
Response of hatchling and yearling turtles to thermal gradients: Comparison of Chelydra serpentina and Trachemys scripta
Correlated factors in amphibian decline: Exotic species and habitat change in western Washington
Variation in age at metamorphosis across a latitudinal gradient for the tailed frog, Ascaphus truei
Amphibian and reptile surveys of U.S. Navy lands on the Kitsap and Toandos Peninsulas, Washington
Amphibians of the Fort Lewis Military Reservation, Washington: Sampling techniques and community patterns
- 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: 56Optical 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 been expandedAuthorsWendy J. Palen, David E. Schindler, M. J. Adams, Christopher A. Pearl, R. Bruce Bury, S. A. DiamondAssociation of amphibians with attenuation of ultraviolet-b radiation in montane ponds
Ambient ultraviolet-b (UV-B) radiation (280–320 nm) has increased at north-temperate latitudes in the last two decades. UV-B can be detrimental to amphibians, and amphibians have shown declines in some areas during this same period. We documented the distribution of amphibians and salmonids in 42 remote, subalpine and alpine ponds in Olympic National Park, Washington, United States. We inferred reAuthorsM. J. Adams, Daniel E. Schindler, R. Bruce BuryPond permanence and the effects of exotic vertebrates on anurans
In many permanent ponds throughout western North America, the introduction of a variety of exotic fish and bullfrogs (Rana catesbeiana) correlates with declines in native amphibians. Direct effects of exotics are suspected to be responsible for the rarity of some native amphibians and are one hypothesis to explain the prevalence of amphibian declines in western North America. However, the predictiAuthorsM. J. AdamsResponse of hatchling and yearling turtles to thermal gradients: Comparison of Chelydra serpentina and Trachemys scripta
In laboratory tests, young Chelydra serpentina and Trachemys scripta altered their distribution in the presence of a temperature gradient. Selection of temperatures in the gradient for hatchlings and yearlings showed that body temperatures (Tbs) of C. serpentina were lower than T. scripta, but the difference was insignificant. Relatively low Tbs could allow greater activity range and reduced metabAuthorsR. Bruce Bury, A.B. Nebeker, M. J. AdamsCorrelated factors in amphibian decline: Exotic species and habitat change in western Washington
Amphibian declines may frequently be associated with multiple, correlated factors. In western North America, exotic species and hydrological changes are often correlated and are considered 2 of the greatest threats to freshwater systems. Bullfrog (Rana catesbeiana) introductions are frequently cited as a threat to lentic-breeding anurans native to western North America and are a suspected factor iAuthorsM. J. AdamsVariation in age at metamorphosis across a latitudinal gradient for the tailed frog, Ascaphus truei
Tailed frogs (Ascaphus truei) occur in permanent, cold streams in northwestern North America. Their tadpoles reportedly undergo metamorphosis after 2-4 years. Coastal populations that we examined transformed in 2 yr from the Olympic peninsula in Washington to northern Oregon, but in 1 yr from central Oregon to northern California. One inland site in northern California had a 2-yr period. Age at meAuthorsR. Bruce Bury, M. J. AdamsAmphibian and reptile surveys of U.S. Navy lands on the Kitsap and Toandos Peninsulas, Washington
We inventoried amphibians and reptiles on 5 U.S. Naval holdings located on the Kitsap and Toandos Peninsulas, western Washington. Eight amphibians, including an introduced anuran, and 4 reptiles were detected, resulting in 87 new locality records. Six species were found on the Toandos Peninsula where no previous records exist. Of the species that historically or currently occur on the Kitsap PeninAuthorsM. J. Adams, Stephen D. West, Lorrie KalmbachAmphibians of the Fort Lewis Military Reservation, Washington: Sampling techniques and community patterns
The 27,000 ha Fort Lewis Military Reservation is situated in the Puget lowlands and contains a wide variety of aquatic habitats offering potential refuge for native amphibians. We surveyed amphibians on Fort Lewis from 1992 through 1995 to examine occupancy patterns relative to wetland characteristics. We documented 9 native amphibians and 1 introduced anuran (Rana catesbeiana) that represent 133AuthorsM. J. Adams, R. Bruce Bury, Scott A. Swarts