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25 record(s) found.

Data Release Capture-mark-recapture data for Oregon spotted frogs [Rana pretiosa] along the Deschutes River, Oregon, 2016-2019
Authors: Jennifer C Rowe; Adam Duarte; Christopher A Pearl; Brome McCreary; P K Haggerty; Michael J Adams
Date: 2021-06-04 | Outlet: Ecosphere, v. 12, no. 6, p. e03634
Altered flow regimes can contribute to dissociation between life history strategies and environmental conditions, leading to reduced persistence reported for many wildlife populations inhabiting regulated rivers. The Oregon spotted frog [Rana pretiosa] is a threatened species occurring in floodplains, ponds, and wetlands in the Pacific Northwest with a core range in Oregon, USA. All life stages of [R. pretiosa] are reliant on aquatic habitats, and inundation patterns across the phenological timeline can have implications for population success. We conducted capture–mark–recapture (CMR) sampling of adult and subadult [R. pretiosa] at three sites along the Deschutes River downstream from two dams that regulate flows. We related the seasonal extent of inundated habitat at each site to monthly survival probabilities using a robust design CMR model. We also developed matrix projection models to simulate population dynamics into the future under current river flows. Monthly survival was strongly associated with the extent and variability of inundated habitat, suggesting some within-season fluctuations at higher water levels could be beneficial. Seasonal survival was lowest in the winter for all three sites, owing to limited water availability and the greater number of months within this season relative to other seasons. Population growth for the two river-connected sites was most strongly linked to adult survival, whereas population growth at the river-disconnected site was most strongly tied to survival in juvenile stages. This research identifies population effects of seasonally limited water and highlights conservation potential of enhancing survival of particularly influential life stages.
Data Release Data from a turtle trapping effort targeting alligator snapping turtles (Macrochelys temminckii) in the Atchafalaya Basin beginning in 2019
Authors: Brad M Glorioso; J Hardin Waddle
Date: 2021-10-25 | Outlet: ScienceBase
This dataset contains data from an ongoing trapping effort beginning in 2019 targeting alligator snapping turtles (Macrochelys temminckii) in the Atchafalaya Basin of south-central Louisiana.
Data Release Data from a 2019 occupancy survey of alligator snapping turtles, Macrochelys temminckii, in south-central Louisiana
Authors: Brad M Glorioso; J Hardin Waddle
Date: 2021-09-14 | Outlet: ScienceBase
This dataset contains data on trapping methodology, turtle captures, and environmental variables from a trapping effort targeting alligator snapping turtles (Macrochelys temminckii) in south-central Louisiana in 2019.
Data Release Amphibian Occupancy and Effects of Habitat Use on Pesticide Exposure in Iowa Wetlands
Authors: Don Dennerline
Outlet: USGS
Data used in manuscript applying occupancy analysis to estimate presence of four anuran species at wetlands in northern Iowa as a function of eight environmental
covariates hypothesized to affect occupancy.
Data Release Survival and sublethal effects of amphibians exposed to NaCl and brines from energy production
Authors: B J Tornabene; Creagh W Breuner; Blake R Hossack
Date: 2019-06-25 | Outlet: PANGAEA Data Publisher for Earth & Environmental Science
We investigated the influence of brines and NaCl alone at commensurate concentrations on three larval amphibian species that occur in areas with energy-related brine contamination. The dataset contains size information (mass in grams, snout-vent length in millimeters) of larval Boreal Chorus Frogs (Pseudacris maculata) and Leopard Frogs (Rana pipiens) and Barred Tiger Salamanders (Ambystoma mavortium) taken during 96-h lethal-concentration-50 experiments. Larvae were generally exposed to concentrations of brine or NaCl ranging from 0–8,000 mg/L increasing by 1,000 mg/L increments. Other associated dataset: https://doi.pangaea.de/10.1594/PANGAEA.913836
Data Release Corticosterone Mediates Lethal and Sublethal Effects and a Growth-Survival Tradeoff for a Larval Amphibian Exposed to Increased Salinity
Authors: B J Tornabene; Blake R Hossack; E J Crespi; Creagh W Breuner
Date: 2018-11-06 | Outlet: PANGAEA Data Publisher for Earth & Environmental Science
We investigated the influence of increased salinity on survival, growth, water content, and Corticosterone responses of larval Northern Leopard Frogs (Rana pipiens) by exposing them to environmentally-relevant salinity treatments for 24 days. We also inhibited Corticosterone for half of the replicates using mifepristone to determine if Corticosterone mediates effects of salinity and tradeoffs between traits. Other associated datasets:
https://doi.pangaea.de/10.1594/PANGAEA.919212
https://doi.pangaea.de/10.1594/PANGAEA.919211
https://doi.pangaea.de/10.1594/PANGAEA.919209
Data Release Hatching success, survival, size and development, and behavioral data for two amphibian species exposed to NaCl and energy-related saline wastewaters
Authors: B J Tornabene; Creagh W Breuner; Blake R Hossack
Date: 2021-09-24 | Outlet: figshare
We investigated the relative effects of NaCl and energy-related saline wastewaters on hatching success, survival, size and development, and behaviors of northern leopard frogs ([i]Rana pipiens[/i]) and boreal chorus frogs ([i]Pseudacris maculata[/i]). Eggs were exposed and responses were tracked through hatching for 24 days. Five datasets are included. (1) Includes hatching and survival data for leopard frog eggs and larvae. (2) Includes hatching and survival data for chorus frog eggs and larvae. (3) Includes behavioral responses of both species monitored daily from day 9–24. (4) Includes morphology measurements from larval leopard frogs taken at the end of the experiment on day 24. (5) Includes morphology measurements from larval leopard frogs taken at the end of the experiment on day 24.
Data Release Aldosterone and corticosterone of a larval amphibian exposed to increased salinity
Authors: B J Tornabene; Creagh W Breuner; Blake R Hossack; E J Crespi
Date: 2021-09-29 | Outlet: figshare
We exposed larval leopard frogs to increased salinity and RU486 (a glucocorticoid receptor antagonist) and tested their influence on waterborne corticosterone (baseline and stress-induced) and aldosterone and relationships between the two adrenal steroid hormones.
Data Release California Red-Legged Frogs in Point Reyes coastal dune drainages (2015)
Authors: Brian J Halstead; Patrick M Kleeman
Date: 2017-05-22 | Outlet: USGS - Science Base
California Red-legged Frogs (Rana draytonii) are typically regarded as inhabitants of permanent ponds, marshes, and slow-moving streams, but their ecology in other habitats, including coastal dunes, remains obscure. To avoid and minimize potential negative effects of dune restoration activities, we studied the spatial ecology, habitat selection, and survival of California Red-legged Frogs in coastal dune drainages at Point Reyes National Seashore, California. Frogs remained in their home drainages throughout the summer, and, with some notable exceptions, most remained close to water. Home ranges of California Red-legged Frogs in dunes were generally small, and they selected areas near water with logs that served as refuge from environmental extremes and predators. California Red-legged Frogs avoided invasive dune plants, and had high survival rates in coastal dune drainages. Whether frogs will use dunes dominated by native species in the same manner as they use dunes degraded by non-native plants, and whether a more dynamic dune ecosystem will maintain the microhabitats necessary to support California Red-legged Frog populations in the future remains unknown.
Data Release Data realease for manuscript: A statistical forecasting approach to metapopulation viability analysis
Authors: P E Howell; Blake R Hossack; Erin L Muths; Brent H Sigafus; A Chenevert-Steffler; R B Chandler
Date: 2020 | Outlet: Ecological Applications 2020: e02038
Data release and code for Ecological Applications paper: A statistical forecasting approach to metapopulation viability analysis
Data Release Data from a 2015 trapping survey targeting the Gulf Coast Waterdog, Necturus beyeri, in Saint Tammany Parish, Louisiana
Authors: Brad M Glorioso; J Hardin Waddle
Date: 2020-06-05
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.
Data Release Oregon spotted frog (Rana pretiosa) monitoring data for metademographic analysis 2010-2018, Oregon: U.S. Geological Survey Data Release
Authors: Jennifer C Rowe; Adam Duarte; James T Peterson; Christopher A Pearl; Brome McCreary; Stephanie K Galvan; Michael J Adams
Date: 2020-05-05 | Outlet: ScienceBase
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.
Data Release Amphibian Occupancy and Effects of Habitat Use on Pesticide Exposure in Iowa Wetlands
Authors: J E Swanson,; Erin L Muths; Clay L Pierce; M Vandever; Kelly L Smalling
Date: 2018-03-09 | Outlet: US Geological Survey Data Release
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 https://0.23 to https://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 < https://0.01 and P < https://0.01, respectively). Our results indicate risk of pesticide accumulation is highest in aquatic habitats earlier in the year.
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
Authors: Brad M Glorioso; Charles D Battaglia; J Streeter; J Hardin Waddle
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
Authors: Blake R Hossack
Date: 2015
Data release for manuscript summarizing responses of Rocky Mountain Tailed Frogs to the 2003 Robert Fire in Glacier National Park.
Data Release Annotated bibliography of grazing effects on amphibians and their habitats
Authors: Jennifer C Rowe; Christopher A Pearl; Michael J Adams; Brome McCreary
Date: 2020-03-04 | Outlet: Science Base
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.
Data Release Cascades frog (Rana cascadae) historical site surveys in the Oregon Cascade Range, 2018-2019
Authors: Michael J Adams; Christopher A Pearl; Brome McCreary; Jennifer C Rowe
Date: 2019-10-11 | Outlet: Science Base
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.
Data Release Foothill yellow-legged frog (Rana boylii) surveys in Oregon 2019
Authors: Michael J Adams; Christopher A Pearl; Jennifer C Rowe; Brome McCreary; Matthew B Laramie; David S Pilliod
Date: 2019-11-01 | Outlet: Science Base
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.
Data Release Oregon spotted frog (Rana pretiosa) telemetry and habitat use at Klamath Marsh National Wildlife Refuge in Oregon, USA
Authors: Christopher A Pearl; Jennifer C Rowe; Brome McCreary; Michael J Adams
Date: 2019-12-13 | Outlet: Science Base
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.
Data Release Telemetry and habitat data for Oregon spotted frogs (Rana pretiosa) in Oregon, USA
Authors: Christopher A Pearl; Brome McCreary; Jennifer C Rowe; Michael J Adams
Date: 2018-09-27 | Outlet: Science Base
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.