Search Results

Researcher measures the length of a Gulf Coast Waterdog
Researcher measures the length of a Gulf Coast Waterdog
Lindy Muse
Data Release Data from a 2015 trapping survey targeting the Gulf Coast Waterdog, Necturus beyeri, in Saint Tammany Parish, Louisiana
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Authors: Glorioso BM, Waddle JH | Date: 2020-06-05 | Format: URL
This dataset provides the data associated with a 2015 project to examine factors affecting the occupancy of Gulf Coast Waterdogs along Bayou Lacombe, Saint Tammany Parish, Louisiana. Data include site locations and distance from headwaters, water data (pH, turbidity, salinity, and depth), and capture data from trap checks. For Necturus beyeri captures, the datatset provides the sex of captures and length and mass measurements. The dataset states whether eggs were visible in females, whether each animal was swabbed for disease and whether tissue was clipped for genetics.
Beaver dam, Oregon.
Beaver dam, Oregon.
Brome McCreary
Data Release Oregon spotted frog (Rana pretiosa) monitoring data for metademographic analysis 2010-2018, Oregon: U.S. Geological Survey Data Release
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Authors: Rowe, JC, Duarte A, Peterson JT, Pearl CA, McCreary B, Galvan SK, Adams MJ | Date: 2020-05-05 | Outlet: ScienceBase | Format: .XLSX
This dataset contains information from surveys conducted 2010-2018 by USGS as part of a long-term Oregon spotted frog monitoring effort in the central Oregon range. Data consist of site, survey, habitat, and species detection covariates, as well as inter-site distance measurements.
Leopard frog in an agricultural wetland in northern Iowa
Leopard frog in an agricultural wetland in northern Iowa
Jennifer Swanson
Data Release Amphibian Occupancy and Effects of Habitat Use on Pesticide Exposure in Iowa Wetlands
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Authors: Swanson, JE, Muths, E, Pierce, CL, Vandever, MW, Smalling, KL | Date: 2018-03-09 | Outlet: US Geological Survey Data Release | Format: URL
Amphibians living in agricultural areas encounter many challenges. Two factors affecting individuals in these landscapes are habitat loss and pesticides. This thesis focuses on amphibians using agricultural wetlands in Iowa, where row crops such as corn and soybeans dominate the landscape. The goal of of the first study was to determine the influences of site characteristics on amphibian presence and success. Occupancy analysis was used to estimate proportion of area occupied by four species as a function of eight covariates hypothesized to affect occupancy: fish abundance, salamander abundance, invertebrate density, vegetative cover, wetland area, water atrazine concentration, surrounding crop land use, and overall wetland health score. We surveyed 27 wetlands in 2015 and 2016. Occupancy analysis results indicate almost all covariates were supported in our model sets although their estimated effects were weak. Direction of predicted effects of covariates on amphibians varied by species and life stage. Results show that wetland site occupancy for species in our study ranged from 0.23 to 0.95. Although we did not find strong evidence that the environmental factors we measured influenced amphibian occupancy, we provide insight on amphibian use of a modified agricultural landscape. The goal of the second study was to understand where and when frogs are most susceptible to pesticide exposure and how that exposure relates to accumulation. We hypothesized habitat use would influence a frog’s exposure to pesticides. We radio tracked 72 Northern Leopard Frogs (Lithobates pipiens) in agricultural wetlands and assessed their survival. We used Passive Sampling Devices (PSDs) to test for differences in pesticide exposure among grassland, wetland, and agricultural habitats. We found that pesticide concentration analyzed from PSDs varied among habitat types (P < 0.01) with concentration greatest in agricultural habitats. Amphibians frequently used wetland habitats early in our study, and transitioned into grassland habitats later in the summer, using agricultural fields rarely. Number and concentration of pesticides were greatest in tissues collected in May, but few pesticides were detected in individuals captured in August (P < 0.01 and P < 0.01, respectively). Our results indicate risk of pesticide accumulation is highest in aquatic habitats earlier in the year.
Alligator snapping turtle ([I] Macrochelys temminckii[/I]) resting on the bank of its native creek before release
Alligator snapping turtle ( Macrochelys temminckii) resting on the bank of its native creek before release
Brad M. Glorioso
Data Release Data from a turtle trapping effort at a release site of head-started alligator snapping turtles, Macrochelys temminckii, in southwest Louisiana in 2018
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Authors: Glorioso BM, Battaglia CD, Streeter J, Waddle JH | Date: 2020-05-01
This dataset contains initial data from head-started alligator snapping turtles released by Louisiana Department of Wildlife and Fisheries (LDWF) from November 2015 to October 2016. In addition, it contains data from a five-day trapping effort at each of seven release sites by the United States Geological Survey (USGS) from late June to early October 2018. Trapping was completed using hoop nets of three sizes. We recaptured eight head-started alligator snapping turtles as well as four individuals native to the creek.
Data Release Data release for manuscript IP-083575, Robert Fire Montana Tailed Frog Data_2001-2015
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Author: Hossack, BR | Date: 2015
Data release for manuscript summarizing responses of Rocky Mountain Tailed Frogs to the 2003 Robert Fire in Glacier National Park.
Screenshot showing user-input search tool interface.
Screenshot showing user-input search tool interface.
Data Release Annotated bibliography of grazing effects on amphibians and their habitats
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Authors: Rowe JC, Pearl CA, Adams MJ, McCreary B | Date: 2020-03-04 | Outlet: Science Base | Format: .XLSX
Livestock grazing is one of the most common land uses in the western United States, where multiple amphibians of conservation concern use habitats that are grazed. Despite the common intersection of grazing and sensitive amphibian species, there are very few reviews of research related to the issue. USGS researchers compiled and summarized literature pertaining to livestock grazing effects on amphibians and their habitats, with an emphasis on wetland-breeding species in the western United States. Users of the annotated bibliography can utilize an integrated search tool with user-defined criteria to query records and output results. This tool aids users in synthesizing research related to a range of specific questions and should assist land managers in evaluating and implementing grazing while maintaining habitat for wetland amphibians.
Cascades frog ([I]Rana cascadae[/I]) in the Three Sisters Wilderness, Oregon.
Cascades frog (Rana cascadae) in the Three Sisters Wilderness, Oregon.
Don Ashton
Data Release Cascades frog (Rana cascadae) historical site surveys in the Oregon Cascade Range, 2018-2019
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Authors: Adams MJ, Pearl CA, McCreary B, Rowe JC | Date: 2019-10-11 | Outlet: Science Base | Format: .XLSX
We used visual surveys to document the presence of all life stages of Cascades frog (Rana cascadae) at historically occupied sites. We surveyed 67 sites 1-2 times between May and August of 2018 and 2019. This effort was a continuation of 2001-2004 surveys conducted at the same site pool. This dataset includes counts of amphibians, reptiles, and fish observed during each site survey, as well as habitat covariates.
Collecting water samples for eDNA analysis.
Collecting water samples for eDNA analysis.
Brome McCreary
Data Release Foothill yellow-legged frog (Rana boylii) surveys in Oregon 2019
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Authors: Adams MJ, Pearl CA, Rowe JC, McCreary B, Laramie MB, Pilliod DS | Date: 2019-11-01 | Outlet: Science Base | Format: .XLSX
We used visual surveys and environmental DNA (eDNA) sampling to document the presence of all life stages of foothill yellow-legged frogs (Rana boylii) at historically occupied sites. We visited 52 stream reaches (sites) on federal and private lands between June and September of 2019. This dataset includes counts of amphibians, crayfish, and fish observed during each site survey, as well as habitat and water sampling covariates.
An Oregon spotted frog ([I]Rana pretiosa[/I]) wearing a radio transmitter belt, Oregon.
An Oregon spotted frog (Rana pretiosa) wearing a radio transmitter belt, Oregon.
Brome McCreary
Data Release Oregon spotted frog (Rana pretiosa) telemetry and habitat use at Klamath Marsh National Wildlife Refuge in Oregon, USA
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Authors: Pearl CA, Rowe JC, McCreary B, Adams MJ | Date: 2019-12-13 | Outlet: Science Base | Format: .XLSX
We used radio-telemetry to study late-season movement and habitat use by Oregon spotted frogs (Rana pretiosa) at Klamath Marsh National Wildlife Refuge in Oregon. This data release includes frog location and habitat use data, as well as visualizations of telemetry data. Tracking events occurred roughly weekly between August and December of 2017.
Tracking Oregon spotted frogs using radio telemetry, Oregon.
Tracking Oregon spotted frogs using radio telemetry, Oregon.
Brome McCreary
Data Release Telemetry and habitat data for Oregon spotted frogs (Rana pretiosa) in Oregon, USA
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Authors: Pearl CA, McCreary B, Rowe JC, Adams MJ | Date: 2018-09-27 | Outlet: Science Base | Format: .XLSX
We used radio-telemetry to study late-season movement and habitat use by the Oregon spotted frog (Rana pretiosa) at 9 sites from 4 populations along the Cascade Mountains in Oregon. This dataset includes individual frog morphometrics, location data, and habitat use during each tracking event that occurred roughly weekly between September and January of 2011, 2012, and 2016.