Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017
The number of mature salmon migrating from the marine environment to freshwater streams is defined as escapement. Escapement data are the enumeration of these migrating fish as they pass upstream, and are a widely used index of spawning salmon abundance. These data are important for fisheries manage...
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2017
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dataone:doi:10.5063/F1VQ30W7 2024-06-03T18:47:06+00:00 Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 Alaska Department of Fish and Game, Division of Commercial Fisheries Alaska ENVELOPE(-176.0,-131.0,78.0,47.0) BEGINDATE: 1921-01-01T00:00:00Z ENDDATE: 2017-01-01T00:00:00Z 2017-10-25T00:00:00Z https://doi.org/10.5063/F1VQ30W7 unknown Knowledge Network for Biocomplexity Oncorhynchus Oncorhynchus tshawytscha Oncorhynchus Oncorhynchus keta Oncorhynchus Oncorhynchus kisutch Oncorhynchus Oncorhynchus gorbuscha Oncorhynchus Oncorhynchus nerka Oncorhynchus tshawytscha Oncorhynchus keta Oncorhynchus kisutch Oncorhynchus gorbuscha Oncorhynchus nerka Dataset 2017 dataone:urn:node:KNB https://doi.org/10.5063/F1VQ30W7 2024-06-03T18:11:39Z The number of mature salmon migrating from the marine environment to freshwater streams is defined as escapement. Escapement data are the enumeration of these migrating fish as they pass upstream, and are a widely used index of spawning salmon abundance. These data are important for fisheries management, since most salmon harvest occurs in freshwater rivers during this migration. Escapement data are collected in a variety of ways. Stationary projects utilize observers stationed along freshwater corridors who count salmon as they pass upriver through weirs or past elevated towers. Sonar equipment placed in the river can also give a stationary escapement count. These counts usually represent a sample, and are expanded to represent a 24h period. Escapement data can also be collected using aerial surveys, where observers in an aircraft provide an index to estimate escapement. In general, escapement counts do not represent total abundance, but instead an index of abundance. Surveys are usually timed to coincide with peak spawning activity, generally in the summer, but in the case of Coho salmon in the fall as well. This dataset contains salmon escapement data extracted from the Alaska Department of Fish and Game's OceanAK database, and contains data from multiple regions in Alaska. Dataset Oncorhynchus gorbuscha Alaska Knowledge Network for Biocomplexity (via DataONE) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(-176.0,-131.0,78.0,47.0) |
institution |
Open Polar |
collection |
Knowledge Network for Biocomplexity (via DataONE) |
op_collection_id |
dataone:urn:node:KNB |
language |
unknown |
topic |
Oncorhynchus Oncorhynchus tshawytscha Oncorhynchus Oncorhynchus keta Oncorhynchus Oncorhynchus kisutch Oncorhynchus Oncorhynchus gorbuscha Oncorhynchus Oncorhynchus nerka Oncorhynchus tshawytscha Oncorhynchus keta Oncorhynchus kisutch Oncorhynchus gorbuscha Oncorhynchus nerka |
spellingShingle |
Oncorhynchus Oncorhynchus tshawytscha Oncorhynchus Oncorhynchus keta Oncorhynchus Oncorhynchus kisutch Oncorhynchus Oncorhynchus gorbuscha Oncorhynchus Oncorhynchus nerka Oncorhynchus tshawytscha Oncorhynchus keta Oncorhynchus kisutch Oncorhynchus gorbuscha Oncorhynchus nerka Alaska Department of Fish and Game, Division of Commercial Fisheries Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
topic_facet |
Oncorhynchus Oncorhynchus tshawytscha Oncorhynchus Oncorhynchus keta Oncorhynchus Oncorhynchus kisutch Oncorhynchus Oncorhynchus gorbuscha Oncorhynchus Oncorhynchus nerka Oncorhynchus tshawytscha Oncorhynchus keta Oncorhynchus kisutch Oncorhynchus gorbuscha Oncorhynchus nerka |
description |
The number of mature salmon migrating from the marine environment to freshwater streams is defined as escapement. Escapement data are the enumeration of these migrating fish as they pass upstream, and are a widely used index of spawning salmon abundance. These data are important for fisheries management, since most salmon harvest occurs in freshwater rivers during this migration. Escapement data are collected in a variety of ways. Stationary projects utilize observers stationed along freshwater corridors who count salmon as they pass upriver through weirs or past elevated towers. Sonar equipment placed in the river can also give a stationary escapement count. These counts usually represent a sample, and are expanded to represent a 24h period. Escapement data can also be collected using aerial surveys, where observers in an aircraft provide an index to estimate escapement. In general, escapement counts do not represent total abundance, but instead an index of abundance. Surveys are usually timed to coincide with peak spawning activity, generally in the summer, but in the case of Coho salmon in the fall as well. This dataset contains salmon escapement data extracted from the Alaska Department of Fish and Game's OceanAK database, and contains data from multiple regions in Alaska. |
format |
Dataset |
author |
Alaska Department of Fish and Game, Division of Commercial Fisheries |
author_facet |
Alaska Department of Fish and Game, Division of Commercial Fisheries |
author_sort |
Alaska Department of Fish and Game, Division of Commercial Fisheries |
title |
Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
title_short |
Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
title_full |
Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
title_fullStr |
Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
title_full_unstemmed |
Daily salmon escapement counts from the OceanAK database, Alaska, 1921-2017 |
title_sort |
daily salmon escapement counts from the oceanak database, alaska, 1921-2017 |
publisher |
Knowledge Network for Biocomplexity |
publishDate |
2017 |
url |
https://doi.org/10.5063/F1VQ30W7 |
op_coverage |
Alaska ENVELOPE(-176.0,-131.0,78.0,47.0) BEGINDATE: 1921-01-01T00:00:00Z ENDDATE: 2017-01-01T00:00:00Z |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(-176.0,-131.0,78.0,47.0) |
geographic |
Keta |
geographic_facet |
Keta |
genre |
Oncorhynchus gorbuscha Alaska |
genre_facet |
Oncorhynchus gorbuscha Alaska |
op_doi |
https://doi.org/10.5063/F1VQ30W7 |
_version_ |
1800876060922871808 |