Tabular dataset containing enumeration of non-target species observed at the Gisasa weir by the U.S. Fish and Wildlife Service between 1994 and 2023.

Tabular dataset containing enumeration of target species observed at the Gisasa weir by the U.S. Fish and Wildlife Service between 1994 and 2023.

Tabular dataset containing enumeration of target species observed at the Gisasa weir by the U.S. Fish and Wildlife Service between 1994 and 2023.

Tabular dataset containing daily and cumulative counts of all fish species apart from Chum and Chinook salmon detected and recorded at the Andreafsky weir for the years 1994 through 2019, 2021, and 2023. Species included differed year by year depending on what was observed at the weir. Counts were done manually at the weir until the introduction of a video feed in 2007. NA refers to missing data whereas 0 refers to no observation made. Data was compiled by Randy Brown and Jeff Melagari for years 1994 through 2016. For 2017 on, data was taken from post season reports.

Tabular dataset containing daily and cumulative counts of all fish species apart from Chum and Chinook salmon detected and recorded at the Andreafsky weir for the years 1994 through 2019, 2021, and 2023. Species included differed year by year depending on what was observed at the weir. Counts were done manually at the weir until the introduction of a video feed in 2007. NA refers to missing data whereas 0 refers to no observation made. Data was compiled by Randy Brown and Jeff Melagari for years 1994 through 2016. For 2017 on, data was taken from post season reports.

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.

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.

Region(s) of distribution of Humpback Whitefish (Coregonus pidschian) (Gmelin, 1789) in the Arctic as digitized for U.S. Geological Survey Scientific Investigations Report 2016-5038. For details on the project and purpose, see the report at https://doi.org/10.3133/sir20165038. Complete metadata for the collection of species datasets is in the metadata document "Dataset_for_Alaska_Marine_Fish_Ecology_Catalog.xml" at https://doi.org/10.5066/F7M61HD7. Source(s) for this digitized data layer are listed in the metadata Process Steps section. Note that the original source may show an extended area; some datasets were limited to the published map boundary. Distributions of marine fishes are shown in adjacent Arctic seas where reliable data are available. The data were clipped to show only the marine distribution areas although some species also may have an inland presence.

These data were compiled to evaluate the potential impact various environmental conditions may have on native fish populaitons through predation. Introduced warm-water sport fishes present a high predation risk for juvenile native fishes, but observations of juvenile native fish surviving and recruiting in some rare cases led us to question what environmental conditions might be responsible for these trends. These data were compiled to allow for a relative comparison of predation effectiveness between a suite of warm-water predators under a variety of environmental conditions. Mean numbers of prey fish surviving in replicated overnight laboratory predation trials were quantified.

Region(s) of distribution of Ninespine Stickleback (Pungitius pungitius) (Linnaeus, 1758) in the Arctic as digitized for U.S. Geological Survey Scientific Investigations Report 2016-5038. For details on the project and purpose, see the report at https://doi.org/10.3133/sir20165038. Complete metadata for the collection of species datasets is in the metadata document "Dataset_for_Alaska_Marine_Fish_Ecology_Catalog.xml" at https://doi.org/10.5066/F7M61HD7. Source(s) for this digitized data layer are listed in the metadata Process Steps section. Note that the original source may show an extended area; some datasets were limited to the published map boundary. Distributions of marine fishes are shown in adjacent Arctic seas where reliable data are available. The data were clipped to show only the marine distribution areas although some species also may have an inland presence.