Data

This data release contains tabular data and photographs from avian surveys of shorebird, predator birds, and other bird species in western Alaska between 1988 and 2012. The data package includes seven tables: 1) characteristics of bird survey sites, 2) habitat classification at survey sites, 3) detections of all birds at survey sites, 4) detections and behaviors of shorebirds and...

These data were compiled for the U.S. Navy and U.S. Fish and Wildlife Service and consist of summary counts at selected population monitoring sites for the Island Night Lizard (Xantusia riversiana), and measurement data (body length, mass) for calculating an index of body condition. Objectives of this study were to provide long-term population trend and health and condition data to the U...

This data release contains rasters of modeled juvenile rearing habitat for spring Chinook salmon in the Willamette River Basin, Oregon for a range of streamflows and for various river corridors. Usable habitat area for juvenile rearing spring Chinook salmon was modeled for two size classes (fry and parr) by pairing outputs from two-dimensional hydraulic models with in-basin observations...

We conducted a study to evaluate the movements and habitat use of juvenile salmonids, including Chinook salmon, in the lower Columbia River Estuary near dredge spoil deposition sites. Fish tagged with JSATS 416.7 kHz acoustic transmitters for upriver dam passage and survival studies were monitored using strategically placed hydrophones throughout the navigation channel, Woody Island...

Individual point estimates of stream density by juvenile salmonid species in two small tributaries to the Salmon River, Lake Ontario, New York were recorded. Enumeration of salmonid species was observed using a backpack electrofisher in order to identify fish species. Stream density estimates were calculated using stream width measurements taken at equally spaced transects. Comparisons...

The Katahdin Woods and Waters (KAWW) National Monument TFG Unit Vegetation Mapping Project was initiated in the fall of 2022 by a grant through the USGS Natural Resource Preservation Program (NRPP) to classify and map vegetation types of the TFG Unit, thereby providing resource managers and biological researchers with useful baseline vegetation information. These data provide the...

This dataset comprises 20 records of length and weight measurements from juvenile Gray Redhorse (Moxostoma congestum) derived from Colorado River, Texas parentage. These individuals were spawned in April 2021 and measured at the time of sacrifice in July 2022. Each record reports common name, scientific name, total length in millimeters, weight in kilograms, sex and maturity stage...

With mortalities of avian wildlife sometimes inferred to be associated with exposure to harmful algal bloom events, the need for clarifying diagnostic parameters for helping to justify case diagnoses is needed. Hence, adult female mallard ducks (Anas platyrhynchos) were exposed to a controlled administration of microcystin-LR, and their liver cells were studied for biomarkers of exposure...

This data release contains results from 2019-2023 for bed material and suspended sediment samples collected at USGS 07374525 Mississippi River at Belle Chasse gage in association with the Louisiana Coastal Protection and Restoration Authority, Lowermost Mississippi River Management Program. Concentration, percent fines and grain size analysis on bed material and suspended sediment...

Mineral assemblages, frictional properties, and deformation mechanisms were investigated in samples collected from an outcrop exposure of the Pütürge segment of the East Anatolian Fault Zone, Turkey (Türkiye). X-ray diffraction (XRD) analysis was performed on five samples to determine the minerals present. Triaxial shearing experiments were conducted at the USGS Rock Physics Laboratory...

This data release contains results from wildfire ash samples collected in burn areas within the Russian River watershed in Sonoma County, California, as well as results produced in laboratory experiments using the ash to assess the mobility of the waterborne pathogen Cryptosporidium parvum (C. parvum) and other contaminants. Ash was collected in 2017, 2019, and 2020 following the Tubbs...

This data release provides results from laboratory testing of 49 regolith specimens obtained from landslide-prone terrain in Puerto Rico, USA. Specimens were obtained by hand either from the ground surface or from the subsurface using boreholes and hand-excavated pits to a maximum depth of 110 cm. Specimen depths are reliably indicated in the file “Tests-performed.csv” and less reliably...