Filters: Contacts: Brielle H Heflin (X)
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This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. This dataset includes zooplankton biomass from Prince William Sound, Icy Bay and Yakutat Bay, Alaska. Zooplankton were sampled with a ring net (0.6 m diameter with 211 µ mesh) on a 50 m vertical haul or to within 5 m of the bottom in shallow water. Zooplankton samples were identified to species and life stage when possible.
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with data used to validate aerial fish surveys in Prince William Sound, Alaska. Data includes: date, location, latitude, longitude, aerial ID, validation ID, total length and validation method. Various catch methods were used to obtain fish samples for aerial validations, including: cast net, go pro, hydroacoustics, jig, dip net, gill net, purse seine, photo and visual identification. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. This dataset contains catch data from trawls at the sampling stations. We deployed a modified herring trawl in coastal waters within glacier fjords of Alaska. Sampling stations in each fjord were chosen randomly from a 2.5 x 2.5 km grid overlaid on navigable waters in the fjord. The number of stations in each fjord was chosen to achieve a sampling frequency of about 1 sample per 15 km^2, and was based on available resources and logistical constraints (weather, navigational hazards and vessel time).
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z Multiple tables (one for each sample station and frequency) with echointegration data from forage fish survey transects in Prince William Sound, Alaska. Each file contains analysis exports from EchoView Software Pty Ltd. ver. 7.1.29.30212. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. This dataset contains physical oceanographic data within four fjords in the coastal area of the Gulf of Alaska. Data were collected with a Seabird Electronics conductivity-temperature-depth profiler equipped with external sensors and a water sampler. Glacier runoff provides a link between terrestrial systems and nearshore coastal processes, whereby freshwater input influences the physical oceanographic properties and circulation of fjords (Arimitsu et al. 2016).
Categories: Data;
Tags: Alaska,
Aquatic Biology,
Biota,
Conductivity,
Conductivity-temperature-depth profiler,
This data package includes 10 child items with data about the distribution, abundance, and morphology of forage fish, zooplankton, and predators, and oceanographic conditions during summer surveys in Prince William Sound, Alaska. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
Categories: Data;
Tags: Acoustic backscatter,
Age composition,
Alaska,
Animals/Invertebrates,
Animals/Vertebrates,
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with the concentrations of inorganic nutrients (NO2, NO3, PO4, and SiOH4) in water samples collected during summer from multiple depths at sampling stations throughout Prince William Sound, Alaska. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. These data describe marine bird and mammal surveys conducted in glacial fjords of coastal Alaska. Data were collected to document the at-sea distribution and abundance of marine birds and mammals in Glacier Bay National Park (2004), Prince William Sound (2010), Icy Bay (2011) and Yakutat Bay (2011). Following standard US Fish and Wildlife protocols for strip surveys.
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. This dataset includes zooplankton displacement volume sampled in Glacier Bay National Park during summer of 2004. Zooplankton were sampled with a multinet with a 0.5 m^2 mouth opening and 335 µ mesh.
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. In order to understand marine ecosystem responses to a range of habitat variability in coastal zones modified by glacial freshwater outflows, biophysical data were collected in three study regions that included four major glacial fjord systems around the Gulf of Alaska. Each of 172 discrete stations within the three study regions was sampled once during the peak ice-melt season in summer. A suite of geographic, oceanographic, nutrient and biological attributes was sampled at each station (see Arimitsu et al. 2008, Renner et al. 2012, Arimitsu et al. 2016 for details). This dataset includes station information, including date, time,...
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with fish morphology measurements from a sample of each fish species caught at each sampling station during summer surveys in Prince William Sound, Alaska. The data include: date, time, latitude, longitude, fishing method, fish common name, total length, fork length, weight, and whether or not that fish was saved. Various catch methods were used to obtain fish samples for aerial and hydroacoustic validations, including: modified herring trawl, purse seine, beach seine, gillnet, cast net, dip net, and jig. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September...
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with zooplankton biomass data from samples collected in the upper 50 m of the water column during summer surveys in Prince William Sound, Alaska. Data include: date, time, latitude, longitude, depth, species identification, and biomass. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with fish catch data from summer surveys in Prince William Sound, Alaska. The data include: date, time, latitude, longitude, fish common name, and fish count. Various catch methods were used to obtain fish samples for aerial and hydroacoustic validations, including: modified herring trawl, purse seine, beach seine, gillnet, cast net, dip net, and jig. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. This dataset contains nutrient data collected at stations within four fjords in the coastal area of the Gulf of Alaska. Sea water samples were collected with a Seabird Electronics Ecosampler SBE55 attached to a conductivity-temperature-depth profiler. Bottles were fired at the surface (0 m) and from 8 m (in Glacier Bay, AK in 2004) or 10 m (in Prince William Sound, AK in 2010 and in Icy Bay and Yakutat Bay, AK in 2011). Samples were processed for nitrite (NO2), nitrate (NO3), ammonium (NH4), phosphate (PO4), and silicic acid (SIOH4).
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with several physical oceanographic measures at sampling stations throughout Prince William Sound, Alaska. Data were collected with a Seabird Electronics conductivity-temperature-depth (CTD) profiler equipped with various sensors and data were processed with Seabird Electronics software. Data include: date, time, latitude, longitude, depth, conductivity, temperature, salinity, turbidity, fluorescence, density, oxygen, pH, Par, sound velocity, beam attenuation and transmission at one meter increments. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September...
This data package includes seven child items with data from environmental and biological statistics collected in fjords in the coastal areas of the Gulf of Alaska from 2004-2011. Child Item 1: "Oceanographic Profile Data from Gulf of Alaska Fjords, 2004-2011". This dataset contains physical oceanographic data within four fjords in the coastal area of the Gulf of Alaska. Child Item 2: "Marine Bird and Mammal Surveys in Gulf of Alaska Fjords, 2004-2011". This dataset describes marine bird and mammal surveys conducted in glacial fjords of coastal Alaska. Child Item 3: "Near-surface Nutrients Data from Gulf of Alaska Fjords, 2004-2011". This dataset contains nutrient data collected at stations within four fjords in...
Categories: Data;
Tags: Alaska,
Alaska Coastal Current,
Ammonium,
Animals/Vertebrates,
Aquatic Biology,
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with the results from surveys conducted to document the summer at-sea distribution and abundance of marine birds and mammals in Prince William Sound, Alaska. Surveys followed standard U.S. Fish and Wildlife protocols for strip surveys. Data include: transect ID, date, time, latitude, longitude, record number, data type, animal species, count, behavior, plumage, distance, observers, observer conditions, the altitude of the survey, ice presence, trip ID, Beaufort, transect type, transect width, and comments. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised:...
Categories: Data;
Tags: Alaska,
Animals/Vertebrates,
Aquatic Biology,
Aquatic birds,
Aquatic mammals,
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table, providing echointegration data of macrozooplankton from three regions of Prince William Sound, Alaska that typically contain foraging aggregations of humpback whales. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
Categories: Data;
Tags: Acoustic backscatter,
Alaska,
Animals/Invertebrates,
Aquatic Biology,
Biomass,
This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with age, length, weight, dry mass energy density, and dry mass of forage fish (Pacific sand lance and capelin) captured in July in Prince William Sound, Alaska. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)
Categories: Data;
Tags: Age composition,
Alaska,
Animals/Vertebrates,
Aquatic Biology,
Bioenergetics,
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