Filters: Tags: {"scheme":"None"} (X) > partyWithName: U.S. Geological Survey - ScienceBase (X) > partyWithName: Josh T Ackerman (X)

Filters Date Range Past year (11) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Ecosystems Western Ecological Research Center Sarah H Peterson Diann J Prosser U.S. Geological Survey More... Categories Data (20) Tag Types Theme (78) Place (19) Tags (with Scheme=None) avian influenza (3) duck incubation recess (3) california (2) incubation constancy (2) mercury (2) methyl mercury (2) pacific flyway (2) More... View Results as: JSON ATOM CSV

Historical methyl mercury in San Francisco Bay San Francisco Bay, California is considered a mercury-impaired watershed. Elevated concentrations of mercury are found in water and sediment as well as fish and estuarine birds. Sources of mercury to the watershed since 1845 include sediment-associated mercury from mercury mining, mercury losses from gold amalgamation activities in mines of the Sierra Nevada, aerial deposition of mercury from global and regional emissions to air, and the direct discharge of mercury to Bay waters associated with the urbanization and industrialization of the estuary. We assessed historical trends in mercury bioaccumulation by measuring mercury concentrations in feathers of the endangered California Ridgway’s rail (formerly California... Categories: Data; Tags: California Ridgway's Rail, Feathers, Ice Cores, Lake Tahoe, Mercury, All tags... San Francisco Bay, Sediment, Structural Equation Model, USGS Science Data Catalog (SDC), Wyoming, Fewer tags Predator Movements and Duck Nests in Relation to Habitat Features in Suisun Marsh, CA (2016-2019) This dataset describes mesopredator locations (raccoons and striped skunks), dabbling duck nest locations (mallard, gadwall, and cinnamon teal), northern harrier nest locations, and random locations in relation to a set of habitat features in Suisun Marsh, California during 2016 through 2019. We designed a series of questions to link fine-scale predator movements and vulnerability of dabbling duck nests to predator encounters and egg predation. We conducted our study over a 4-year period using 41 GPS-collared raccoons and striped skunks, two of the most widespread mammalian predators of waterfowl eggs in North America, and more than 2000 monitored duck nests. Each night of movement for mesopredators contains the... Categories: Data; Tags: California, Suisun Marsh, USGS Science Data Catalog (SDC), Wildlife Biology, animal behavior, All tags... biota, environment, wetland ecosystems, Fewer tags Mercury Contamination of Red-legged Kittiwakes in the Western Subarctic Pacific Ocean This dataset contains mercury concentrations and locations of wintering red-legged kittiwakes in the western subartic Pacific Ocean. These data support the following publication: Fleishman, AB, RA Orben, N Kokubun, A Will, R Paredes, JT Ackerman, A Takahashi, AS Kitaysky, and SA Shaffer. 2019. Wintering in the Western Subarctic Pacific increases mercury contamination of red-legged kittiwakes. Environmental Science and Technology, in press. Categories: Data; Tags: Pacific Ocean, USGS Science Data Catalog (SDC), Wildlife Biology, biogeography, biota, All tags... birds, contaminant exposure, distribution, hierarchical clustering, isotopic analysis, marine isoscape, mercury contamination, mesopelagic predator, migration (organisms), non-breading, seabird, seabird sentinels, stable isotopes, western subartic, Fewer tags Breeding Waterbird Populations in South San Francisco Bay 2005-2019 The dataset includes three separate excel spreadsheets which provides waterbird (and predator) observations within individual survey units during the May 2019 breeding waterbird survey of south San Francisco Bay (2019WaterbirdSurveyFullData.xlsx), the total number of American avocets, black-necked stilts, and Forster's terns within each pond unit surveyed during the May 2019 survey (2019WaterbirdSurveyPondModel.xlsx), and the annual total number of nests for American avocets, black-necked stilts, and Forster's terns in south San Francisco between 2005 and 2019 (SouthBayWaterbirdNests2005-2019.xlsx). These data support the following publication: Hartman, C.A., Ackerman, J.T., Schacter, C.R., Herzog, M.P., Tarjan,... Categories: Data; Tags: San Francisco Bay, USGS Science Data Catalog (SDC), Wildlife Biology, biota, birds, All tags... estuarine ecosystems, land use change, long-term ecological monitoring, migratory species, population dynamics, wetland ecosystems, Fewer tags Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a citizen science framework. Categories: Data; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, Aquatic Biology, All tags... Battle Creek Cypress Swamp, Bear Creek Lake Park, Bear Meadows Natural Area, Big Bend National Park, Big Cypress National Park, Big Thicket National Preserve, Buffalo National River, Cape Cod National Seashore, Capitol Reef National Park, Carl Sandburg Home National Historic Site, Channel Islands National Park, Chickasaw National Recreation Area, Colorado National Monument, Congaree National Park, Cuyahoga Valley National Park, Death Valley National Park, Delaware Water Gap National Recreation Area, Denali National Park and Preserve, Devils Tower National Monument, East Inlet Natural Area-Connecticut Lakes Nature Preserve, Ecology, Environmental Health, Everglades National Park, Fort Worth Nature Center and Refuge National Natural Landmark, Gateway National Recreation Area, Glacier Bay National Park & Preserve, Glacier National Park, Glen Canyon National Recreation Area, Golden Gate National Recreation Area, Grand Canyon National Park, Grand Portage National Monument, Grand Teton National Park, Great Basin National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Hawaii Volcanoes National Park, Homestead National Historic Site, Hot Springs National Park, Indiana Dunes National Park, Isle Royale National Park, Jean Lafitte National Historical Park and Preserve, John Day Fossil Beds National Monument, Katahdin Woods and Waters National Monument, Katmai National Park and Preserve, Kenilworth Park & Aquatic Gardens, Klondike Gold Rush National Historical Park, Knife River Indian Villages National Historic Site, Lake Clark National Park, Lassen Volcanic National Park, Lewis and Clark National Historical Park, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Maurice National Wild & Scenic River, Minute Man National Historical Park, Mississippi National River & Recreation Area, Monocacy National Battlefield, Montezuma Castle National Monument, Mount Rainier National Park, Natchez Trace Parkway and National Scenic Trail, Niobrara National Scenic River, North Cascades National Park, Olympic National Park, Oregon Caves National Monument, Ozark National Scenic Riverway, Padre Island National Seashore, Pictured Rocks National Lakeshore, Pinnacles National Park, Pipestone National Monument, Prince William Forest Park, Pu'ukohola Heiau National Historic Site, Redwood National Park, Richmond National Battlefield Park, Rock Creek Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint Croix National Scenic Riverway, Saint-Gaudens National Historic Site, San Juan Island National Historical Park, Santa Monica Mountains National Recreation Area, Saugus Iron Works National Historic Site, Sequoia & Kings Canyon National Parks, Shenandoah National Park, Sleeping Bear Dunes National Lakeshore, Tallgrass Prairie National Preserve, Timucuan Ecological Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), Upper Delaware Scenic and Recreational River, Valles Caldera National Preserve, Voyageurs National Park, Water Quality, Weir Farm National Historic Site, Wildlife Biology, Wind Cave National Park, Women’s Rights National Historical Park, Yellowstone National Park, Yosemite National Park, Zion National Park, biota, environment, mercury contamination, Fewer tags How Mallard and Gadwall Hens Nesting in Grizzly Island Wildlife Area Respond when Flushed (2015 - 2018) This dataset describes responses to flushes by surveyors and predators for mallard and gadwall hens nesting on the Grizzly Island Wildlife Area, Suisun Marsh, California in 2015 through 2018. It includes the start time and duration of recesses, as well as the cause of recess initiation and responses of hens to various trapping activities at the nest site. These data support the following publication: Croston, R., Hartman, C.A., Herzog, M.P., Peterson, S.H., Kohl, J.D., Overton, C.T., Feldheim, C.L., Casazza, M.L. and Ackerman, J.T., 2021. Interrupted incubation: How dabbling ducks respond when flushed from the nest. Ecology and Evolution. Categories: Data; Tags: Suisun Bay, USGS Science Data Catalog (SDC), Wildlife Biology, biota, duck incubation recess Nocturnal Incubation Recess and Flushing Behavior by Duck Hens Nesting in Grizzly Island Wildlife Area 2015-2018 This dataset describes nocturnal incubation recess behavior for mallard and gadwall hens nesting in Grizzly Island Wildlife Area in breeding seasons 2015-2018. It includes the frequency, start time and duration of recesses, and details a method for determining whether a recess was initiated in response to a predator at the nest using nest temperature data. These data support the following publication: Croston, R.L., Peterson, S.E., Hartman, C.A., Herzog, M.P., Feldheim, C.L., Casazza, M.L., Ackerman, J.T., 2021. Nocturnal incubation recess and flushing behavior by duck hens. Ecology and Evolution Categories: Data; Tags: California, Suisun Marsh, USGS Science Data Catalog (SDC), Wildlife Biology, animal behavior, All tags... biota, duck incubation recess, 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. 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 Incubation recess times for mallard and gadwall hens nesting in Grizzly Island Wildlife Area 2015 - 2017 This dataset describes incubation recess timing for mallard and gadwall hens nesting in Grizzly Island Wildlife Area in breeding seasons 2015-2017. It includes the start time, end time, and duration of recesses. This data supports the following publication: Croston, R., Hartman, C.A., Herzog, M.P., Casazza, M.L., Feldheim, C.L. and Ackerman, J.T., 2020. Timing, frequency, and duration of incubation recesses in dabbling ducks. Ecology and Evolution. https://doi.org/10.1002/ece3.6078. Categories: Data; Tags: Suisun Bay, USGS Science Data Catalog (SDC), Wildlife Biology, biota, birds, All tags... duck incubation recess, ecosystem monitoring, organism growth and development, wildlife biology, Fewer tags Mercury, Cortisol, and Blood Biomarkers in Adult Female Northern Elephant Seals from 2011 to 2021 This dataset represents 179 unique adult female northern elephant seals that were sampled between 2011 and 2021 during four different life history states (early breeding, late breeding, early molting, and late molting) at the Ano Nuevo colony in California, USA. Some individual seals were sampled multiple times, resulting in a total of 313 tissue samples. Tissue samples were collected from seals and quantified for total mercury (whole blood and muscle), cortisol (serum), and 10 blood biomarkers (total thyroxine, total triiodothyronine, reverse triiodothyronine, immunoglobulin E, immunoglobulin G, immunoglobulin M, interleukin-6, interleukin-1-beta, progesterone, and estradiol). These data support the following... Categories: Data; Tags: Ecology, Environmental Health, USGS Science Data Catalog (SDC), Wildlife Biology, bioacumulation, All tags... biota, contamination and pollution, ecotoxicology, marine mammal, mercury contaminaion, methyl mercury, stress physiology, Fewer tags Avian Eggshell Thickness for 12 Species in the Western U.S. from 2014 to 2018 Eggshell thickness was measured at the egg equator and poles (sharp pole and blunt pole) for 12 avian species. Eggshell thickness was related to egg morphometrics (egg length and width), embryonic development, egg status, and mercury contamination. Individual eggshells each have up to 3 thickness measurements, linked by the eggshell identification. Each measurement has the corresponding egg length, egg width, egg status, mercury concentration, and nest identification. Additionally, eggshell thickness was measured at 5 equally spaced positions along the longitude of the egg (sharp pole, quarter egg, half egg, three quarter egg, and blunt pole) in a subset of Forster's tern (Sterna forsteri) eggs. These data support... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Nevada, USGS Science Data Catalog (SDC), Washington, biota, All tags... birds, egg measurements, eggshell, laboratory methods, mercury contamination, Fewer tags Mercury contamination in Anna’s hummingbirds Heavy metal contamination (n=17 metals) of feather and tissue samples from live and deceased Anna's hummingbirds (Calypte anna) was evaluated. Feathers taken from live birds are low in sample weight, therefore a novel method was used in feather sample preparation. Feather samples were then analyzed utilizing an inductively coupled plasma mass spectrometry (ICP-MS) assay. In addition, ICP-MS was used to measure heavy metal concentrations in feather and tissue samples from salvaged hummingbird carcasses. Iron, zinc, selenium and mercury concentrations were most commonly elevated in body feathers from live birds with mercury being the metal most likely to be found in elevated concentrations. Because of this, we conducted... Categories: Data; Tags: Anna’s hummingbird, Calypte anna, Mercury contamination, Northern California, Sierra Nevada foothills, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags Nest Attendance, Incubation Constancy, and Onset of Incubation in Dabbling Ducks This dataset includes daily nest attendance (proportion of time females spent at the nest), incubation constancy (proportion of time females maintained their nests at nest-specific incubation temperatures), nest temperature variation, and the duration of individual incubation bouts for three species of dabbling ducks (mallard, gadwall, and cinnamon teal) nesting in Suisun Marsh, California during 2015-2019. These data support the following publication: Hartman, C.A., Ackerman, J.T., Peterson, S.H., Fettig, B., Casazza, M. and Herzog, M.P., 2023. Nest attendance, incubation constancy, and onset of incubation in dabbling ducks. Plos one, 18(5), p.e0286151. https://doi.org/10.1371/journal.pone.0286151. Categories: Data; Tags: Cinnamon teal, Ecology, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... clutch size, dabbling ducks, ecology, gadwall, incubation constancy, mallard, nest attendance, nest temperature, Fewer tags Incubation Constancy, Number of Incubation Recesses, Recess Duration and Mercury Concentrations for Tree Swallows at the Cosumnes River Preserve 2014 These metadata provide data used to examine tree swallow incubation behavior in relation to egg mercury concentration and maternal blood mercury concentration. These data were collected from tree swallows nesting in artificial wooden nest boxes at the Cosumnes River Preserved in California's Central Valley in 2014. Included are two datasets. One dataset provides daily incubation constancy (the proportion of the day the female spent incubating her eggs), the number of incubation recesses (breaks from incubating) taken by the attending female each day and the total mercury concentration of one egg from the female's clutch, and blood total mercury concentrations collected from the mother. Additionally, we include other... Categories: Data; Tags: Cosumnes River Preserve, Tachycineta bicolor, USGS Science Data Catalog (SDC), Wildlife Biology, animal behavior, All tags... biota, incubation behavior, incubation constancy, mercury contamination, tree swallow, Fewer tags Prey fish returned to Forster’s tern colonies in South San Francisco Bay during 2005-2015 Prey fish were collected at 17 Forster’s tern breeding colonies during colony visits from 2005-2015. Prey fish were identified to the lowest taxonomic category. We present relative abundances by colony and year for each of the 10 major species groups. Unidentified fish species or rarely observed species were combined into an “Other” category. We calculated an arithmetic mean, standard deviation (sd), 25th quantile, and 75th quantile for dry standard length (SL; mm) and dry mass (g) for each fish species at each colony. These data support the following publication: Peterson SH, Ackerman JT, Eagles-Smith CA, Herzog MP, Hartman CA (2018) Prey fish returned to Forster’s tern colonies suggest spatial and temporal differences... Tags: San Francisco Bay, South San Francisco Bay, USGS Science Data Catalog (SDC), biota, dietary coomposition, All tags... dropped fish, foraging, migratory species AND fish, prey selection, seabird, Fewer tags Geochemical data for water, sediment, and biota in Lake Combie, California, 2017-2021 This dataset includes field measurements and laboratory analyses of surface water, bottom water (sediment-water interface), surficial (0-2 cm) sediment, pore water (0-2 cm), and biota collected in Lake Combie, California, from September 2017 through August 2021. The study area includes six sites within the reservoir where discrete samples of surface water, bottom water, sediment, and pore water were taken along the length of the reservoir at the following distances from the spillway: 0.07 miles, 0.5 miles, 0.9 miles, 1.2 miles, 1.3 miles, and 1.4 miles. The within-reservoir sites were sampled during September 2017, February 2018, and May 2018, prior to a large sediment removal operation, and again during September... Categories: Data; Tags: California, Geochemistry, Hydrology, Lake Combie, Limnology, All tags... USGS Science Data Catalog (SDC), Upper Bear, Water Quality, Zooplankton, bioaccumulation, biota, chemical analysis, dissolved metals, environment, field sampling, fish, geoscientificInformation, inlandWaters, mercury, mercury analysis, mercury contamination, methyl mercury, methylmercury, optical methods, reservoir, sediment analysis, suspended material (water), water chemistry, water properties, water quality, Fewer tags Hair and blood total mercury concentrations in raccoons and striped skunks from Suisun Marsh 2016 to 2019 Total mercury concentrations were determined in hair and whole blood of raccoons and skunks in Suisun Marsh from 2016 to 2019. Individual skunks and raccoons were identified by a unique identifier (Animal_ID) and some animals were sampled multiple times. This dataset includes animal sex, age class, the date the sample was collected, animal body mass, head length, and head-to-torso length. These data support the following publication: Peterson, Sarah H., Ackerman, J.T., Hartman, C.A., Casazza, M.L., Feldheim, C.L., and Herzog, M.P. 2020. Mercury exposure in mammalian mesopredators inhabiting a brackish marsh. Environmental Pollution Categories: Data; Tags: California, THg, USGS Science Data Catalog (SDC), Wildlife Biology, bioaccumulation, All tags... biota, blood, capturing (animals), fur, hair, mammals, mercury contamination, wildlife, Fewer tags Data describing infection status and movement ecology of North American waterfowl These data, which support a USGS authored manuscript, describe how active and previous previous infection with avian influenza impacts the movement ecology of several wild waterfowl species that overwinter in California. Results varied by species and demonstrate that the relationships between avian influenza infection and wild bird movements are context- and species-dependent. Categories: Data; Tags: California, Pacific Flyway, USGS Science Data Catalog (SDC), Wildlife Biology, Wildlife Disease, All tags... Wildlife Disease, avian influenza, biota, migration, movement, telemetry, waterfowl, Fewer tags Mercury concentrations in western gulls along the west coast, USA, 2015-2017 We investigated whether foraging habitat, sex, or fidelity to a foraging area effected blood mercury concentrations in western gulls (Larus occidentalis) from three colonies on the west coast of the United States. Dataset includes total mercury concentrations in western gulls from three colony locations and associated foraging habitat of individual gulls. These data support the following publication: Clatterbuck, C.A., Lewison, R.L., Orben, R.A., Ackerman, J.T., Torres, L.G., Suryan, R.M., Warzybok, P., Jahncke, J. and Shaffer, S.A., 2021. Foraging in marine habitats increases mercury concentrations in a generalist seabird. Chemosphere, p.130470. Categories: Data; Tags: Environmental Health, Pacific Ocean, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... contaminant, habitats, islands, mercury, west coast, wildlife, Fewer tags Data describing habitat use and availability for wild waterfowl in California, USA These data describe the overlap of wild waterfowl and domestic poultry operations in California, USA. These data support a paired USGS publication. Categories: Data; Tags: California Central Valley, USGS Science Data Catalog (SDC), Wildlife Disease, avian influenza, biota, All tags... transmission interface, Fewer tags 1 2 »