Length, Weight, Energy Density, and Isotopic Values of Fish from Rivers in Northwest Alaska, 2015-2019

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This dataset contains length, weight, energy density, and isotope values of fish collected in northwest Alaskan rivers during summer and fall 2015-2019.

Fish Species Composition and Diet Information in Lakes of the Arctic Coastal Plain, Alaska, 2011-2013

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This dataset provides information on fish species composition and their diet information for 16 lakes and 16 ponds at two locations on the central Arctic Coastal Plain, Alaska. In one table, we provide the presence of fish species and the total species count for each lake or pond sampled. This table also includes metrics of surface water connectivity to the stream network. In a second table, stomach content information is provided for fish collected during summer sampling periods (late June to mid-August) over three years (2011–2013). The third table includes stable carbon isotope and stable nitrogen isotope signature data for fish species and snails (the baseline organism) from 16 water bodies at one study location in 2013.

Fish Species Composition and Diet Information in Lakes of the Arctic Coastal Plain, Alaska, 2011-2013

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This dataset provides information on fish species composition and their diet information for 16 lakes and 16 ponds at two locations on the central Arctic Coastal Plain, Alaska. In one table, we provide the presence of fish species and the total species count for each lake or pond sampled. This table also includes metrics of surface water connectivity to the stream network. In a second table, stomach content information is provided for fish collected during summer sampling periods (late June to mid-August) over three years (2011–2013). The third table includes stable carbon isotope and stable nitrogen isotope signature data for fish species and snails (the baseline organism) from 16 water bodies at one study location in 2013.

Concentrations of environmental DNA (eDNA) during sockeye salmon spawning in 2016, Hansen Creek, Alaska, USA

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This dataset contains environmental DNA (eDNA) concentrations and spawning adult abundances for sockeye salmon (Oncorhynchus nerka) in Hansen Creek, a small tributary in the Wood River watershed, southeast Alaska, USA. We took temporally- and spatially-replicated eDNA samples during the spawning period (mid-July through August), along with fish counts (live, naturally dead, and killed), dissolved oxygen (DO), discharge, and temperature data at each time of sampling. Samples were collected at each site before adults entered the stream, and then continued to be collected daily or every other day for the next three weeks.

Concentrations of environmental DNA (eDNA) during sockeye salmon spawning in 2016, Hansen Creek, Alaska, USA

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This dataset contains environmental DNA (eDNA) concentrations and spawning adult abundances for sockeye salmon (Oncorhynchus nerka) in Hansen Creek, a small tributary in the Wood River watershed, southeast Alaska, USA. We took temporally- and spatially-replicated eDNA samples during the spawning period (mid-July through August), along with fish counts (live, naturally dead, and killed), dissolved oxygen (DO), discharge, and temperature data at each time of sampling. Samples were collected at each site before adults entered the stream, and then continued to be collected daily or every other day for the next three weeks.

Nearshore Fish Isotope Values, Beaufort Sea, Alaska, 2017-2019

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This dataset contains isotope results of stable isotope (δ13C and δ15N) and radicoarbon (F14C) analyses of muscle tissue from fish collected in the nearshore Beaufort Sea, Alaska in summers 2017-2019.

Nearshore Fish Isotope Values, Beaufort Sea, Alaska, 2017-2019

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This dataset contains isotope results of stable isotope (δ13C and δ15N) and radicoarbon (F14C) analyses of muscle tissue from fish collected in the nearshore Beaufort Sea, Alaska in summers 2017-2019.

Fish Nutritional Quality, Biomarkers, Communities, and Environmental Data from the Nearshore Beaufort Sea, Alaska, 2021-2023

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This data release contains information derived from fishing efforts and sampled fish from the nearshore Beaufort Sea, Alaska, 2021-2023, as part of a study investigating red-throated loon productivity and diet. The datasets include six tables comprising 1) catch per unit effort (CPUE) data, 2) field-measured lengths of fish (mm), 3) the energy density (kJ/g) and whole-body energy (kJ) of 16 species of forage-sized fish (≤200 mm), 4) taxonomic details of captured fish, 5) temperature (°C), raw electrical conductivity (μS/cm), and salinity (psu) as recorded by data loggers, and 6) the specifications of surface trawl fishing sets.

Fish presence and stream habitat data from Southeast Alaska from 2017-05-09 to 2020-10-13 (NCEI Accession 0242074)

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This archive information package contains fish presence and stream habitat data collected in southeast Alaska, between May 2017 and October 2020 to identify anadromous fish stream habitat. During this time the Alaska Department of Fish and Game Habitat Section staff completed 1,051 stream surveys in remote and urban areas, using backpack electrofisher, fish traps, clinometers, tape measures, and rangefinder/hypsometer. Data collected include fish species presence, notable fish habitat features, substrate characteristics, fish barriers, and other additional notes. These data are provided in both Excel spreadsheet and ESRI shapefile formats.

Abundance and run timing of adult salmon in the Andreafsky River at Yukon Delta National Wildlife Refuge, Alaska

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Hourly counts of all fish species observed at the Andreafsky Weir. Data are derived from weir video feed for available years 2015-2023. Counts were done hour by hour for 24 hours a day unless maintenance was required or conditions disrupted the video feed. NA delineates times in which the video feed was not active while 0 delineates that no fish were counted for that hour. All species have been standardized and counted every year since the implementation of the video feed.