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Filters Date Range Past year (31) Past month (6) Past week (2) Past day (0) Custom range... To   Search Extensions Shapefile (3) Types Map Service (4) OGC WFS Layer (4) OGC WMS Layer (4) Downloadable (3) Shapefile (3) OGC WMS Service (2) Contacts Western Ecological Research Center Sarah H Peterson Josh T Ackerman Jonathan P Rose Michael P Chenaille More... Categories Data (27) Tag Types Theme (33) Place (29) USGS Scientific Topic Keyword (32) Harvest Set (33) Tag Schemes USGS Thesaurus (31) None (13) ISO 19115 Topic Category (32) Common geographic areas (17) Geographic Names Information System (3) Marine Realms Information Bank (MRIB) keywords (4) Coastal and Marine Ecological Classification Standard (3) Alexandria Digital Library Feature Type Thesaurus (3) Getty Thesaurus of Geographic Names (1) Geographic Names Information System (GNIS) (1) View Results as: JSON ATOM CSV

Survival Data for Translocated Adults and Captive-Reared Juvenile Giant Gartersnakes in Sacramento County, California (2018-2021) The dataset consists of two csv files one for adult snakes and one for captive-reared juvenile snakes. The data contains start times (when snakes entered the study) and end times (when snakes died or were censored from the study) for survival analysis. The data also contains general information about the individual snakes (id, snout-vent length, treatment group, whether or not they were translocated), sex (juveniles only since adults were all female), surface activity (and data needed to calculate surface activity), and average distance moved between telemetry resighting. The above information was used as covariates in the survival models. These data support the following publication: Nguyen, A.M., Todd, B.D.... Categories: Data; Tags: California, Ecology, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... ecology, habitats, herpetology, reptiles, wildlife, Fewer tags Maternal Transfer of Mercury to Northern Elephant Seal Pups We used free-ranging northern elephant seals as a model species to investigate maternal transfer of mercury (Hg) to pups in relation to maternal traits, including maternal blood mercury concentrations, and to quantify the links between pup lanugo mercury concentrations and maternal mesopelagic foraging behavior during gestation. We satellite tracked known-age adult females at sea during their seven-month-long foraging trip to determine maternal foraging strategies (geographic locations and diving depths) and quantified mercury concentrations in maternal blood and their pups’ blood and lanugo (which is defined as pup hair grown in utero) early in lactation when seals were hauled out. We then tested how the maternal... Categories: Data; Tags: Ecology, Environmental Health, Marine Oceanic Mesopelagic Layer, USGS Science Data Catalog (SDC), Wildlife Biology, All tags... bioaccumulation, biota, contaminant transport, ecology, ecotoxicology, mercury, mercury contamination, seals, sea lions and walruses, Fewer tags Captures and Trapping Effort for Deer Mice (Peromyscus sonoriensis) at Point Reyes National Seashore, California, USA from 2021 to 2022 These data represent trapping effort and captures of deer mice at Point Reyes National Seashore, Marin County, California. Deer mice were captured and marked with ear tags to allow identification of individuals. The location of captures can be used in a spatially explicit capture recapture model to estimate density of mice and how mouse density varies by site and habitat type. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: California, Ecology, Marin County, Point Reyes National Seashore, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, biota, ecology, mammals, modeling, population and community ecology, restoration, Fewer tags Body Mass of Dabbling and Diving Ducks Harvested in California Body mass data (measured in grams) of dabbling and diving ducks harvested in three regions of California: Sacramento Valley, Suisun Marsh, and San Joaquin Valley during the 2014/2015, 2015/2016, 2016/2017, 2018/2019, and 2019/2020 hunting seasons. In addition to mass, the flattened length of right wing, species, sex, age, and date of harvest were also recorded. These data support the following publication: Herzog, M.P, Ackerman, J.T., Kohl, J.D., Fettig, B.L., Hartman, C.A., Peterson, S.H., Casazza, M.L., and Fleskes, J.P., 2024. Body mass changes of dabbling and diving ducks wintering in California. Journal of Wildlife Management, e22650. https://doi.org/10.1002/jwmg.22650 Categories: Data; Tags: California, California, California, Central Valley, Central Valley, All tags... Ecology, Sacramento Valley, San Joaquin Valley, Suisun Marsh, USGS Science Data Catalog (SDC), Wildlife Biology, biota, body mass, dabbling ducks, datasets, diving ducks, migratory species, natural resources, winter, wintering waterfowl, Fewer tags Greater Sage-Grouse Habitat Selection, Survival, Abundance, and Space-Use in the Bi-State Distinct Population Segment of California and Nevada Greater sage-grouse (Centrocercus urophasianus; hereinafter sage-grouse) is a sagebrush obligate species and widely considered an indicator species for sagebrush ecosystems and other sagebrush-dependent species (Hanser and Knick, 2011; Prochazka and others, 2023). Sagebrush ecosystems are threatened by a wide range of disturbances and anthropogenic factors, including climate change, severe drought, altered wildfire regimes, expansion of invasive species, and anthropogenic development. Collectively, these threats have led to reduced ecological integrity and sage-grouse habitat quality within the sagebrush biome (Doherty and others, 2022). Steady and long-term declines in sage-grouse populations have led to large-scale... Tags: Bi-State, California, Ecology, Land Use Change, Nevada, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, animal behavior, biota, demographic response, ecology, greater sage-grouse, habitat selection, life stages, native species, reproduction, shrubland ecosystems, survival, Fewer tags San Francisco Gartersnake Fecundity Data from San Mateo County, California Collected from 2019-2022 Adult female San Francisco gartersnakes (Thamnophis sirtalis tetrataenia) were captured and examined using an ultrasound device to determine if they were gravid and count the number of embryos in those that were. Morphological data including length and mass were collected for each snake, along with the date of capture and a study site identifier. These data support the following publication: Rose, J.P., Kim, R., Schoening, E.J., Lien, P.C., and Halstead, B.J., 2023. Comparing reintroduction strategies for the endangered San Francisco gartersnake (Thamnophis sirtalis tetrataenia) using demographic models. PLoS ONE 18(10): e0292379. https://doi.org/10.1371/journal.pone.0292379 Categories: Data; Tags: Ecology, San Mateo County, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... herpetology, natural resource management, Fewer tags Data for: A conservation planning tool for greater sage-grouse using indices of species distribution, resilience, and resistance Managers require quantitative yet tractable tools that can identify areas for restoration yielding effective benefits for targeted wildlife species and the ecosystems they inhabit. A spatially explicit conservation planning tool that guides effective sagebrush restoration for sage-grouse can be made more effective by integrating baseline maps describing existing (pre-restoration) habitat suitability, and the distribution and abundance of breeding sage-grouse. Accordingly, we provide two rasters. The first is a floating point raster file informed by lek data, and derived from: 1) utilization distributions weighted by lek attendance, and 2) a non-linear probability of space-use relative to distance to lek. The second... Tags: Bi-State, California, Conservation Planning Tool, Nevada, USGS Science Data Catalog (SDC), All tags... biota, environment, greater sage-grouse, Fewer tags Timing of Occurrence of Waterfowl in U.S. Counties and Canadian Counties, Boroughs, Census Districts, and Other Populated Area Designations with Modeled Exposure Status to Highly Pathogenic Avian Influenza Virus in 2021-2022 This data provides county level occurrence information for all individuals used in modelling potential exposure and spread of highly pathogenic avian influenza (HPAIv) from the 2021-2022 North American outbreak. The data set contains individual identifiers and taxa information, an indicator of exposure, exposure status (Susceptible, Exposed by HPAIv detection in the county, or Exposed by secondary contact with an exposed bird), and date of first occurrence of each individual bird and that bird's exposure status within each visited county. Herein, county refers to any county, parish, borough, census area, or geographic region identified in the associated geospatial data US_CAN_AI.shp (ESRI shapefile format). Occurrence... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Canada, Ecology, Remote Sensing, USGS Science Data Catalog (SDC), United States, All tags... Wildlife Disease, avian influenza, biogeography, biota, birds, disease vectors, economy, geoscientificInformation, location, maps and atlases, migratory species, Fewer tags Egg Membrane Thickness in 13 Waterbird Species Eggshells of 13 waterbird species were divided in half longitudinally and the outer eggshell membrane was removed from one of the halves. Eggshell thickness was measured for both eggshell halves, both with and without the outer eggshell membrane. The eggshell membrane thickness was calculated by taking the difference between the two thickness measurements. These data support the following publication: Santolo, G.M., Peterson, S.H., Cooney, B., Hartman, C.A., Herzog, M.P. and Ackerman, J.T., 2024. Eggshell membrane thickness and its contribution to total eggshell thickness for 13 waterbird species. The Wilson Journal of Ornithology. https://doi.org/10.1676/23-00017 Categories: Data; Tags: American avocet, American coot, Black skimmer, Black-necked stilt, California gull, All tags... Caspian tern, Double-crested cormorant, Ecology, Forster's tern, Green heron, Killdeer, Pied-billed grebe, Snowy plover, USGS Science Data Catalog (SDC), Western grebe, Wildlife Biology, biota, egg, egg masses, morphology (biological), Fewer tags Egg Mercury Concentration and Egg Size in Two Songbird Species This dataset includes egg total mercury concentrations, egg total mercury burden, egg length, egg width, predicted egg volume, and predicted fresh wet weight according to egg position in the laying sequence for tree swallow and house wren eggs from the Cache Creek Settling Basin and Cosumnes River Preserve, in California's Central Valley during 2018. These data support the following publication: Hartman, C.A., Ackerman, J.T., Cooney, B., and Herzog, M.P., 2024. Egg mercury concentration and egg size varies with position in the laying sequence in two songbird species. Environmental Toxicology and Chemistry. Categories: Data; Tags: Cache Creek Settling Basin, Cosumnes River Preserve, Ecology, Environmental Health, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, biota, ecotoxicology, egg, house wren, mercury contamination, songbird, tree swallow, Fewer tags Assessing Connectivity among Coastal and Interior Cactus Wrens in California using Population Genomics (2021) The Coastal Cactus Wren is a species of high conservation concern in southern California. The goal of this project was to obtain taxonomic resolution of subspecies boundaries between coastal and desert populations of Cactus Wrens. We collected genetic samples from Cactus Wrens at California desert sites and combined this dataset with previously collected samples from coastal populations to resolve the distribution of subspecies and to determine distinct genetic lineages, gene flow, genetic diversity and effective population size of desert populations. Understanding these relationships will assist managers with development and implementation of a conservation and management strategy that could aim to avoid state... Categories: Data; Tags: California, DNA sequencing, Ecology, Genetics, USGS Science Data Catalog (SDC), All tags... biota, capturing (animals), endangered species, genetics, Fewer tags Bird use of Winter-Flooded Rice Fields in the Sacramento Valley, California Bird and habitat surveys were conducted in winter-flooded rice fields in the Sacramento Valley, California, USA during the fall and winters of 2021-2022 (Oct 2021 through February 2022) and 2022-2023 (December 2022 through February 2023). Rice field sampling consisted of (1) a bird survey that was followed by (2) an overall habitat assessment and (3) a more detailed habitat transect survey. Rice farms in the Sacramento Valley are organized into separate rice fields that each consist of multiple smaller rice checks. This dataset contains 253 surveyed rice checks with the observed bird abundances for each rice check, calculated diversity metrics, and measured habitat variables. Categories: Data; Tags: Ecology, USGS Science Data Catalog (SDC), agricultural sites, biota, birds, All tags... farming, Fewer tags Kelp and Sea Urchin Data Obtained by SCUBA at Shallow Nearshore Sites along the North Pacific Rim from Bering Island to Southeast Alaska Obtained over Multiple Decades Beginning in 1987 Between 1987 and 2021, over 600 nearshore rocky bottom sites were sampled by scuba at 38 locations on the north Pacific Rim ranging from Bering Island, along the Aleutian Island chain and the Alaska Peninsula to southeast Alaska. Sites were plotted at random from along the coasts of islands or areas designated. Hard substrate was targeted. Most sites were sampled more than once, years or decades apart. Many sites in the western Aleutians were resampled several times as sea otter populations densities changed there. Each site was sampled using 20 quadrats along 20-25-foot depth contour. At a subset of sites, 40-foot depths were sampled. Divers counted kelps but non-motile invertebrates, Desmarestia spp. (acid weed),... Tags: Alaska Peninsula National Wildlife Refuge, Aquatic Biology, Ecology, Russia, Southeast Alaska, All tags... Southwest Alaska, USGS Science Data Catalog (SDC), Western Aleutian Islands, benthic ecosystems, biota, geography, location, sea urchins and sand dollars, Fewer tags Movements, Used Habitats, and Available Habitats Identified using Step Selection Processes for Four Species of Waterfowl in California's Central Valley, 2016-2022 Step selection functions use animal movement patterns to estimate habitats available at each step along a movement track. These data were generated from four species of waterfowl (Anser albifrons [greater white-fronted goose], Anser caerulescens caerulescens [lesser snow goose], Anas platyrhynchos [mallard], Anas acuta [northern pintail]) using the Central Valley of California 2016 to 2022 that were fit with tracking devices collecting GPS data every hour (or subset to hourly locations). Observed movements were used to estimate a 2-mixture log-normal step length distribution for each species. The shorter mean step length mixture generally reflected step lengths consistent with individual immobility and GPS errors.... Categories: Data; Tags: California, Central Valley, Ecology, GPS measurement, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, animal movement, animal tracking, biota, birds, functional response, habitat selection, habitat suitability indices, habitats, relative strength of selection, step selection, Fewer tags Microsatellite Genetic Marker Genotypes from Southern Mule Deer (Odocoileus hemionus fuliginatus) Sampled in San Diego County, California Collection of microsatellite genetic data from multiple projects involving southern mule deer (Odocoileus hemionus fuliginatus) in San Diego County, California. Samples were collected 2005-2007, 2010, 2012-2013, 2015, and 2018-2020. These data support the following publication: Mitelberg, A., Smith, J.G., and Vandergast, A.G., 2019, DNA Fingerprinting of Southern mule deer (Odocoileus hemionus fuliginatus) in north San Diego County, California (2018–19): U.S. Geological Survey Open-File Report 2019–1138, 25 p., https://doi.org/10.3133/ofr20191138. Categories: Data; Tags: DNA sequencing, Ecology, Genetics, San Diego, USGS Science Data Catalog (SDC), All tags... biological population management, biota, environment, genetics, genotype, polymerase chain reaction, population and community ecology, wildlife population management, Fewer tags Spatially Explicit Estimates of Greater Sage-Grouse (Centrocercus urophasianus) Survival, Recruitment, and Rate of Population Change in Nevada, 2013-2021 These data are the results of a spatially interpolated integrated population model (SIIPM) fit to count and demographic data collected from populations of Greater Sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) located in Nevada, U.S.A. during 2013-2021. We used a novel framework, using integrated population models (IPMs), to express demographic relatedness among sampled and unsampled populations using geographic principles of spatial autocorrelation (Shepard, 1968; Tobler, 1970). Specifically, the framework pairs relatively inexpensive population count data with spatially interpolated demographic estimates. When conducted within a Bayesian framework, spatially interpolated demographic parameters... Tags: Ecology, Nevada, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... long-term ecological monitoring, native species, wildlife, Fewer tags Morphogroups of Biocrusts Following Seasons of Grazing Near Boise, Idaho The data were collected at Morley Nelson, Birds of Prey National Conservation Area (NCA) where known grazing regimes, including the season of grazing, have been in practice for the last 30 years. Surveyed plots were placed to account for intensity of grazing and to avoid confounding disturbances. Data were collected on the morphogroups of biological soil crusts (biocrusts) found within the NCA, and include measurements on soils related to texture, carbon, nitrogen and the abundance of soil aggregating cyanobacteria in the soil. These data support the following publication: Condon, L.A., Rosentreter, R., Veblen, K.E. and Coates, P.S., 2024. Season of grazing interacts with soil texture, selecting for associations... Categories: Data; Tags: BLM AIM data, Birds of Prey National Conservation Area, Ecology, Great Basin, Idaho, All tags... National Canservation Lands, Rangeland Administration System, Soil Sciences, USGS Science Data Catalog (SDC), biological soil crusts, biota, botany, community ecology, cyanobacteria, ecology, farming, lichens, mosses, sagebrush ecosystem, soil sciences, soil texture, vascular plants, Fewer tags Capture Data and SNP Genotypes to Evaluate Subspecies Range Boundaries of the Bell’s vireo (Vireo bellii pusillus and V. b. arizonae) (2010-2022) Genetic samples in the form of a small blood sample were collected from 263 Bell’s vireos (Vireo bellii) in drainages throughout southern and central California, Arizona, southern Nevada, and southwestern Utah. We used population genomic techniques to delineate the range limit between the Least Bell’s Vireo (V. b. pusillus) and its conspecific geographical neighbor, the Arizona Bell’s Vireo (V. b. arizonae). This study provides a taxonomic classification of individuals sampled where the two subspecies meet. Moreover, it allows an estimate of genetic diversity and trends in both taxa, estimates sources and levels of dispersal and gene flow among drainages, and allows us to assess progress of recovery and effectiveness... Categories: Data; Tags: Arizona, California, DNA sequencing, Ecology, Environmental Health, All tags... Genetics, Nevada, USGS Science Data Catalog (SDC), Utah, Wildlife Biology, biota, capturing (animals), endangered species, genetics, genomic, Fewer tags Occupancy Surveys for the Temblor Legless Lizard (Anniella alexanderae) in the San Joaquin Valley, California 2022 to 2023 This dataset contains the survey effort by U.S. Geological Survey (USGS) biologists sampling for Temblor legless lizards (Anniella alexanderae) in 2022 and 2023, the results of those surveys, and environmental covariates relevant to detection and occupancy of this species. At the time of the species description, little was known about the distribution of the Temblor legless lizard beyond a few localities. Surveys were designed to gather information on the distribution of Temblor legless lizards to help inform a Species Status Assessment by the U.S. Fish and Wildlife Service. Binary values for each year indicate whether Temblor legless lizards were detected under cover boards at a site in that year (1) or were not... Categories: Data; Tags: California, Ecology, Fresno County, Kern County, San Joaquin Valley, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, biogeography, biota, ecology, occupancy, reptiles, Fewer tags Cactus Wren Invertebrate Diet Derived from Sequencing of Nestling Fecal Samples in San Diego County, California This dataset contains the invertebrates (identified to Order and Family) present in Cactus Wren nestling fecal samples and found using DNA sequencing (metabarcoding) methods. Nestling fecal samples were collected from one or more handled nestlings per territory collected between April and July of 2015 through 2019 in San Diego, California. The steps to process these data are detailed in the Data Quality section. These data support the following publication: Lynn, S., Houston, A., and Kus, B.E., 2022, Distribution and demography of Coastal Cactus Wrens in Southern California, 2015–19: U.S. Geological Survey Open-File Report 2022-1044, 44 p., https://doi.org/10.3133/ofr20221044. Categories: Data; Tags: DNA sequencing, Genetics, San Diego County, California, USGS Science Data Catalog (SDC), Wildlife Biology, All tags... biota, Fewer tags 1 2 »