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Fish collections made at Buck Island Reef National Monument with the ichthyocide rotenone in 2001 at 58 stations followed by 10 days each in April 2011 and January 2012 surveying poorly sampled shoreline habitats with rotenone and clove oil and inland streams with seine.
Categories: Data;
Types: Citation;
Tags: Caribbean,
Fish,
Saint Croix,
St. Croix,
USGS Science Data Catalog (SDC),
These data include water chemistry from springs, streams, rivers, and shallow groundwater collected in the Arctic National Wildlife Refuge in northern Alaska. Chemical analyses were performed for hydrochemical parameters including field parameters, major ions, nutrients, metals, stable isotopes of water, and tritium, as well as for dissolved gases useful for determining the timescale over which the water was in the subsurface (i.e. age dating tracers), including noble gases and chlorofluorocarbons.
Categories: Data;
Tags: Aichilik River,
Alaska,
Arctic National Wildlife Refuge,
Canning River,
Dissolved gas,
This data package is comprised of eight tables relating to surveys of eelgrass beds in Izembek and Kinzarof Lagoons, Izembek National Wildlife Refuge, Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass. Version History: First release:October 2021 Revised: March 2023 (ver. 2.0) Revised: April 2023 (ver. 3.0) Revised: May 2023 (ver. 3.1) Revised: June 2024 (ver. 4.0)
Categories: Data;
Tags: Alaska,
Alaska Peninsula,
Angiosperms (flowering plants),
Animal and plant census,
Animals/Invertebrates,
This release provides results of an environmental DNA (eDNA) study of fish identified in seven Alaskan lakes, three streams, and a positive control. Samples included replicates for multiple sampling dates and locations. The reference list and conserved primer sets to identify species present were developed using publicly available data (https://www.ncbi.nlm.nih.gov/genbank/). Highly conserved primers which could differentiate species of interest were developed for three portions of mtDNA genes (12S, 16S and COI).
Gavia Species Identification and Diet Composition from Feces, Central North Slope, Alaska, 2012-2014
This data set is comprised of one table with sampling information and NCBI BioProject accession numbers for sequence information of this amplicon-based study targeting Loon (Gavia sp.) and fish species expected in lake systems of the North Slope of Alaska from fecal samples. Highly conserved primers which could differentiate species of interest were developed for five portions of gavia mtDNA genes (COXI, CytB, ND1, ND2, and ND5) and two portions of fish mtDNA genes (12S, and CytB). The reference sequences and conserved primer sets to identify species present were developed using publicly available data from NCBI GenBank.
This dataset is derived from images from a variety of Earth observing satellite imagery sources collected at known walrus coastal haulouts in Alaska and Chukotka, Russia. Earth observing imagery sources used in this data release include (but are not limited to) optical imagery collections by: (1) the European Space Agency's Sentinel-2 mission, (2) the Plant Labs Planet Scope constellation, and (3) Maxar satellites, as well as synthetic aperture radar imagery collected by: (1) European Space Agency's Sentinel-1 mission, (2) the DLR (German Aerospace Agency) TerraSAR-X satellite, (3) the Umbra Space satellite constellation, (4) the Canadian Radarsat-2 satellite, (5) the Capella Space satellite constellation and (6)...
These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset is comprised of six comma separated values (.csv) file exported from a relational database. The data consist of: 1) transect summary, 2) nest details, 3) egg float and stage data, 4) chicks diets, 5) chick diet taxonomy, and 6) Gulf Watch Alaska contributors. Version History: First release: April 2017 Revised: November 2023 (ver. 2.0)
This data release has been SUPERSEDED. No data are provided here. Data from Gulf Watch Alaska nearshore water and air temperature sampling data releases have been appended to U.S. Geological Survey data release: https://doi.org/10.5066/F7WH2N3T. This data is part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. The data consists of date, time, and temperature measurements from intertidal rocky sampling sites. The dataset is 5 comma separated files exported from a download from the HOBO temperature logger. Sites are in Alaska and include locations in Katmai National Park and Preserve, Kenai Fjords National Park and northern and western Prince William Sound. There are five...
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package includes four tables of data from Pacific Black Brant (Branta bernicla nigricans) 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. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0)
Categories: Data,
Data Release - Revised;
Tags: Animal populations,
Animals/Vertebrates,
Bahia San Quintín,
Baja California,
Baja California Sur,
This data set is comprised of one table with sampling information and allele sizes for 69 individual Northern Fulmars (Fulmarus glacialis) from Chagulak Island, Alaska and Hafnarey Island, Iceland. Fulmar allele sizes are provided for 10 previously published and 26 novel microsatellite loci. Additionally, allele sizes for the 26 microsatellite loci developed in this study are included for Arctic Terns (Sterna paradisaea, n=4), Common Murres (Uria aalge, n=6), Crested Auklets (Aethia cristatella, n=6), Fork-tailed Storm Petrels (Oceanodroma furcata, n=5), Marbled Murrelets (Brachyramphus marmoratus, n=5), Common Gulls (Larus canus, n=5), Pelagic cormorants (Phalacrocorax pelagicus, n=5), and Thick-billed Murres (Uria...
Categories: Data;
Tags: Alaska,
Albatrosses/Petrels and Allies,
Alleles,
Animals,
Animals/Vertebrates,
This data release has been SUPERSEDED. No data are provided here. Data from HABs sampling data releases have been appended to U.S. Geological Survey data release: https://doi.org/10.5066/P9MLNP9H. This data set is comprised of two tables with results of algal toxin screening for saxitoxin and domoic acid. We used enzyme-linked immunosorbent assay (ELISA) and high-performance liquid chromatography (HPLC) to screen seabirds, forage fish, and marine invertebrates from the Gulf of Alaska, 2015-2017.
Categories: Data;
Tags: Alaska,
Algal blooms,
Animals/Invertebrates,
Animals/Vertebrates,
Aquatic birds,
These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe mussel sampling and observations conducted in the northern Gulf of Alaska. This dataset consists of six comma separated files (.csv): 1) mussel sampling site layout information, 2) mussel counts for mussels greater than 20 millimeters in a quadrat, 3) mussel size measurements for mussels greater than 20 millimeters in a quadrat, 4) mussel counts for all mussels collected from core samples, 5) mussel size frequencies for all mussels collected from core samples, and 6) list of Gulf Watch Alaska principal investigators and collaborators. This dataset includes previously released data and supersedes the USGS data release (https://doi.org/10.5066/F7WS8RD4)....
Categories: Data,
Data Release - Revised;
Tags: Alaska,
Animals/Invertebrates,
Aquatic Biology,
Aquatic biology,
Aquatic ecosystems,
This dataset contains results of genetic screening for Poecivirus from samples of black-capped chickadees (BCCH; Poecile atricapillus) with and without clinical signs of avian keratin disorder (AKD). Data include information on detection/non-detection of the virus in tissue collected with buccal swabs, cloacal swabs, blood samples, and fecal samples from up to 124 individuals between 2015 and 2017 from various locations in southcentral Alaska. For an additional 17 symptomatic (and one asymptomatic) individual(s) collected between 2001 and 2015 in the same region, data include measurements of viral load in beak tissue measured by qRT-PCR as well as the amount of actively replicating virus detected by 7 negative-strand...
Categories: Data;
Tags: Alaska,
Anchorage,
Animal diseases,
Animals/Vertebrates,
Avian keratin disorder,
These data are is part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Kenai Fjords National Park between 2002 and 2016. Sea otters are a keystone predator, well known for structuring the nearshore marine ecosystem through their consumption of invertebrate prey. The dataset consists of 3 comma delimited files exported from Microsoft Excel. The data consists of 1. Strip transect counts, 2. Intensive Search Unit (ISU) counts, and 3. Transect coordinates. For each aerial survey, a pilot flew an airplane at an altitude of 91m over pre-determined transects while an...
These data consist of the fatty acid composition (percent of mass) of adipose tissue samples from polar bears in Alaska's southern Beaufort Sea. Fat biopsy samples were collected from polar bears that were either captured or biopsy darted along the north coast of Alaska or on offshore ice during March, April, or May from 2004 to 2016. The data also include an identification code unique to an individual bear, sex, age class, and the date of sample collection.
This data release includes three tables containing cosmogenic beryllium-10 and aluminum-26 concentrations and related data from samples collected at four sites in central Alaska in 2020, prepared in 2022 at the University of Vermont (UVM), and measured at the Purdue Rare Isotope Measurement lab (PRIME) in 2022. The file "burialAge_siteLocations_centralAK_bender.csv" contains site locations in the NAD83 reference frame, and burial ages computed from raw data contained in the other files. All files are linked by the site_id_short field.
Categories: Data;
Tags: Alaska,
Aluminum-26 analysis,
Beaver Creek,
Beryllium-10 analysis,
Birch Creek,
These data comprise 505 unique geospatial raster datasets which describe persistent river ice (aufeis) occurrence within floodplains of select rivers and creeks in the 1002 Area of the Arctic National Wildlife Refuge in northern Alaska. Each raster is derived from a historical observation made by one of five Landsat satellites. Surface reflectance in the green and shortwave infrared wavelengths are used to classify the aufeis occurrence within individual pixels. Pixel values of "1" correspond to aufeis presence while "0" corresponds to its absence. Rasters are generated from cloud and snow-filtered images captured between May and September for the years 1985-2022.
This data set provides sample collection information and genetic data used to identify relationships between groups of North American accipiters, including one hybrid. Genetic data includes gender identification, nuclear and mtDNA sequence markers, and microsatellite genotypes derived from 20 autosomal loci (Age1302, Age1303, Age1304, Age1305, Age1306, Age1307, Age1308, Age1309, Age1310, Age1311, Age1312, Age1313, Age1314, Age1316, Age1317, Age1318, Age1319, Age1320, Age1321, and Age1322).
Categories: Data;
Tags: Accipiter cooperii,
Accipiter gentilis,
Accipiter striatus,
Alaska,
Animals/Vertebrates,
This dataset contains 99 electron microprobe analyses of cassiterite, chalcopyrite, galena, pyrite, sphalerite, and tetrahedrite from seven Sheep Creek drill core samples and one outcrop; and a table that describes the textures, mineralogy, and rock type of 15 thin sections of Sheep Creek drill core and observations from our study and from drill core logging by industry. These data were used to compare this prospect with others in the Bonnifield district. The dataset also contains tables of sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon dates, zircon characteristics (crystal shape, external morphology, internal features, color, aspect ratio, and cathodoluminescence zoning), and 139 U-Th-Pb analyses...
Categories: Data;
Tags: Age determinations,
Alaska,
Bonnifield,
Electron microprobe,
GeoScientificInformation,
This data set describes nuclear microsatellite genotypes derived from ten autosomal loci (Aph8, Aph16, Cmo7, Cmo9, Hhi5, Sfi10, Smo4, Smo6, Smo8, Smo12) and nucleotide sequence data derived from one mitochondrial DNA locus (control region). A total of 262 Spectacled Eiders were examined for this study. Samples were collected at Indigirka and Chaun River Deltas, Russia, and Yukon-Kuskokwim Delta, Utqiagvik, Colville River Delta, Prudhoe Bay, Alaska. Samples used in the study originated from blood or feather samples collected in the field from live trapped birds or from tissue taken from dead birds.
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