Filters: Tags: Population dynamics (X) > Date Range: {"choice":"year"} (X) > partyWithName: U.S. Geological Survey, Alaska Science Center (X)

Filters Date Types (for Date Range) Contacts Arimitsu, M.L. (ORCID: 0000-0001-6982-2238) Marsteller, C.E. (ORCID: 0000-0002-2430-0708) Piatt, J.F. (ORCID: 0000-0002-4417-5748) Schoen, S.K. (ORCID: 0000-0002-5685-5185) Flint, Paul L. (ORCID: 0000-0002-8758-6993) More... Categories Data (4) Tag Types Theme (8) Place (8) Tag Schemes None (8) NASA GCMD Earth Science Keyword Thesaurus (8) USGS Thesaurus (8) USGS Geographic Names Information System (GNIS) (7) USGS CSA Biocomplexity Thesaurus (8) ISO 19115 Topic Category (8) NGA GEOnet Names Server (1) More... View Results as: JSON ATOM CSV

Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico This data package includes two folders of data from Pacific Black Brant (Branta bernicla nigricans) during winter and migration periods. One folder has data from brant wintering along the Baja California Peninsula and Sonoran coasts of Mexico. The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. The other folder has data from brant tagged with VHF radio transmitters in July 1999 on the Yukon Kuskokwim Delta, Alaska and detected in the following two years during their annual migration. Data include: 1) one table with attributes of the tagged brant, 2)... Tags: Animal populations, Animals/Vertebrates, Bahía San Quintín, Baja California, Baja California Sur, All tags... Biota, Birds, Black Brant, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS:ASC533, Waterfowl, Wildlife, Fewer tags Population Plots at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with annual counts from population plots of Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Black-legged Kittiwakes, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Environment, Gulf of Alaska, Indicator species, Kachemak Bay, Marine ecosystems, Population dynamics, Rissa tridactyla, Uria aalge, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags Aerial Photo Imagery from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019 The imagery and annotations presented here were generated while testing an aerial photographic survey design to improve repeatability, transparency, and estimation of variance for annual population estimates of geese staging at Izembek Lagoon, Alaska. This dataset includes 1) 131,031 .JPG images captured from a small fixed-wing occupied aircraft, usually at an altitude of about 457 m, over Izembek Lagoon; 2) annotations of objects (geese, ducks, and gulls) assigned by an automated algorithm, and 3) manually corrected annotations that were edited by project staff for only those photos automatically identified as containing geese of any species. The photos were captured at predetermined points to systematically sample... Tags: Aerial photography, Aerial surveys, Alaska, Alaska Peninsula, Animals/Vertebrates, All tags... Anser canagicus, Aquatic ecosystems, Biota, Birds, Branta bernicla, Branta hutchinsii, Coastal ecosystems, Ducks/Geese/Swans, Environment, Estuarine habitat, Image collections, Izembek Lagoon, Izembek National Wildlife Refuge, Migratory birds, Migratory species, Photography, Population dynamics, Relative abundance analysis, Tundra ecosystems, USGS:ASC449, Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Fewer tags Nesting Productivity of Black-Legged Kittiwakes and Common Murres at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with annual nesting productivity estimates for Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Black-legged Kittiwakes, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Environment, Gulf of Alaska, Indicator species, Kachemak Bay, Marine ecosystems, Population dynamics, Rissa tridactyla, USGS:ASC378, Uria aalge, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags Data and Model-Based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska These data are in two tables relating to fall age ratios (number of juvenile birds : total birds aged) of Black Brant (Branta bernicla nigricans) staging in Izembek Lagoon, Alaska, since 1963. The first table is observation data for the age classes of Black Brant during surveys, and associated survey characteristics. The second table contains model-based estimates of age ratios by year along with Standard Error (SE), and 95% Bayesian credible intervals around estimates. Tags: Alaska, Animal populations, Animals/Vertebrates, Biota, Birds, All tags... Black Brant, Brent Goose, Computational methods, Ecological dynamics, Environment, Izembek Lagoon, Izembek National Wildlife Refuge, Mathematical modeling, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS:ASC256, Waterfowl, Wildlife biology, Fewer tags Waterfowl Lead Exposure Data in Alaska and Russia This dataset identifies lead (Pb) concentration found in the blood of waterfowl sampled in western and northern Alaska and eastern Russia between 1993 and 2022. Data include age, sex, body measurement, capture location, presence or absence of lead shot on x-rays, and blood lead levels. Because the study took place over a number of years at the same study sites, many of the same birds were sampled in multiple years. Tags: Alaska, Animals/Vertebrates, Aythya marila, Biota, Birds, All tags... Clangula hyemalis, Coastal ecosystems, Colville River Delta, Common eider, Ducks/Geese/Swans, Environment, Environmental Conditions, Freshwater ecosystems, Greater scaup, Indigirka River, Kashunuk River, King eider, Lead, Long-tailed duck, Polysticta stelleri, Population Dynamics, Prudhoe Bay, Russia, Somateria fischeri, Somateria mollissima, Somateria spectabilis, Species Life History, Spectacled eider, Steller's eider, USGS:ASC54, Wetland ecosystems, Yukon Delta, Yukon Delta National Wildlife Refuge, Fewer tags Predation of Common Murre Eggs at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with egg predation data from Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Bald Eagle, Biota, Birds, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Egg production, Environment, Glaucous-winged Gull, Gulf of Alaska, Haliaeetus leucocephalus, Herring Gull, Indicator species, Kachemak Bay, Larus argentatus, Larus glaucescens, Marine ecosystems, Nesting behavior, Nesting success, Population dynamics, Reproductive success, Uria aalge, Use/Feeding habitat, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags Population Counts at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with annual population counts (censuses) for Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Black-legged Kittiwakes, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Environment, Gulf of Alaska, Indicator species, Kachemak Bay, Marine ecosystems, Population dynamics, Rissa tridactyla, Uria aalge, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags