Filters: partyWithName: Ecosystems (X) > partyWithName: Western Ecological Research Center (X) > partyWithName: Christopher A Hartman (X)

Filters Date Range Past year (1) Past month (1) Past week (0) Past day (0) Custom range... To   Search Contacts Josh T Ackerman U.S. Geological Survey - ScienceBase Rebecca L Croston U.S. Geological Survey, Western Ecological Research Center U.S. Geological Survey Mark P Herzog Christopher A Hartman Categories Data (5) Tag Types Theme (5) USGS Scientific Topic Keyword (5) Harvest Set (5) Place (4) Tag Schemes None (5) USGS Thesaurus (4) ISO 19115 Topic Category (5) Common geographic areas (1) View Results as: JSON ATOM CSV

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 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 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 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