Stock Status and Escapement Goals for Salmon Stocks in Southeast Alaska PDF Download
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Author: Harold J. Geiger
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 362
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Book Description
Author: Harold J. Geiger
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 362
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Book Description
![Stock Status [i.e. And] Escapement Goals for Chinook Salmon Stocks in Southeast Alaska PDF](https://books.google.com/books/content/images/frontcover/W55yNwAACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 78
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Author:
Publisher:
ISBN:
Category : Coho salmon
Languages : en
Pages : 40
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Author: Andrew W. Piston
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 83
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Book Description
In Southeast Alaska, chum salmon (Oncorhynchus keta) spawn in more than 1,200 streams. The Alaska Department of Fish and Game maintains a standardized survey program to index spawning chum salmon abundance at 87 summer-run and seven fall-run streams. Lower-bound sustainable escapement goals are established for summer-run stocks comprising aggregates of index streams over three broad subregions (Southern Southeast, Northern Southeast Inside, and Northern Southeast Outside) and sustainable escapement goal ranges are established for five fall-run stocks that support directed fisheries (Cholmondeley Sound, Port Camden, Security Bay, Excursion River, and Chilkat River). We reviewed chum salmon escapement goals and recommend that summer-run chum salmon goals continue to be based on the 25th percentiles of historical escapement index counts, primarily due to the uncertainty regarding harvest rates. We recommend reducing the Northern Southeast Inside Subregion lower-bound sustainable escapement goal from 119,000 to 107,000 fish. For fall-run chum salmon stocks, except for the Chilkat River, we also recommend continuing to base escapement goals on the 25th and 75th percentiles of historical escapement index counts, and recommend no changes at this time. Summer-run chum salmon escapement goals were met in four of the past five years in the Southern Southeast and Northern Southeast Outside subregions, and in three of the past five years in the Northern Southeast Inside Subregion. Escapement goals were met for the five fall-run stocks 84% of the time over the past 5 years. The annual common property harvest of chum salmon in Southeast Alaska averaged 6.9 million fish per year since 2007; hatchery-produced fish accounted for an average 85% of that harvest. No Southeast Alaska stocks of chum salmon currently meet the criteria for stocks of concern as defined by the State of Alaska's Policy for Management of Sustainable Salmon Fisheries (5 AAC 39.222).
Author: Douglas Murrell Eggers
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 67
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Book Description
This work represents a review of escapement goals for chum salmon stocks (Oncorhynchus keta) in the Southeast Alaska area.
Author: Douglas Murrell Eggers
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 46
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Book Description
This work represents a review of escapement goals for sockeye salmon stocks (Oncorhynchus nerka) in the Southeast Alaska and Yakutat area.
Author: Leon D. Shaul
Publisher:
ISBN:
Category : Coho salmon
Languages : en
Pages : 88
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Book Description
Reports on the status of coho salmon stocks in Southeast Alaska, which was assessed from information on escapement, smolt abundance, marine survival, and total abundance from coded-wire-tagged indicator stocks and from stocks returning to streams that were surveyed for escapement.
Author: Andrew W. Piston
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 45
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Book Description
During the 1990s and 2000s, pink salmon were harvested in Southeast Alaska at the highest levels since record keeping began in the late 19th century. Since 2006, the average annual harvest has dropped, largely due to poor even-year returns to the Northern Southeast Inside Subregion of Southeast Alaska, but also due to recent declines in odd-year returns. Even-year pink salmon harvests averaged only 20 million fish per year since 2006, primarily due to very low harvests in the Northern Southeast Inside Subregion, which averaged only 2.3 million fish per year during that time. Odd-year harvests to the Northern Southeast Inside Subregion remained strong through 2017, but dropped to approximately 2 million in 2019, which was the lowest odd-year harvest since the late 1970s. Even-year harvests in the Southern Southeast Subregion quickly rebounded after a very low harvest of 3.3 million fish in 2006. The harvest of 33.2 million fish in the Southern Southeast Subregion in 2014 was the largest even-year harvest since 1996 and was approximately double the 1960–2012 average harvest for even years. From 2014 to 2019, the average harvest of 12.3 million in the Southern Southeast Subregion was far below the average harvest of 27.7 million from 1985 to 2014. Pink salmon escapement indices have been consistently within or above escapement goals in the Southern Southeast and Northern Southeast Outside subregions but were below the escapement goal in the Northern Southeast Inside Subregion in four of the past five even years and in three of the past five years overall. We reviewed pink salmon escapement goals and recommend no changes. At this time, no stocks of pink salmon in Southeast Alaska meet the criteria for stocks of concern as defined by the State of Alaska’s Policy for Management of Sustainable Salmon Fisheries (5 AAC 39.222).
Author: Andrew W. Piston
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 86
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Book Description
In Southeast Alaska, chum salmon (Oncorhynchus keta) spawn in more than 1,200 streams. The Alaska Department of Fish and Game maintains a standardized survey program to index spawning chum salmon abundance at 87 summer-run and seven fall-run streams. Lower-bound sustainable escapement goals are established for summer-run stocks comprising aggregates of index streams over three broad subregions (Southern Southeast, Northern Southeast Inside, and Northern Southeast Outside), and sustainable escapement goal ranges are established for five fall-run stocks that support directed fisheries (Cholmondeley Sound, Port Camden, Security Bay, Excursion River, and Chilkat River). Summer-run chum salmon escapement goals were met in all of the past five years in the Southern Southeast Subregion, four of the past five years in the Northern Southeast Inside Subregion, and three of the past five years in the Northern Southeast Outside Subregion. Escapement goals were met for the five fall-run stocks 83% of the time over the past five years. No Southeast Alaska stocks of chum salmon currently meet the criteria for stocks of concern as defined by the State of Alaska’s Policy for the Management of Sustainable Salmon Fisheries (5 AAC 39.222). We reviewed chum salmon escapement goals and recommend no changes at this time. The annual common property harvest of chum salmon in Southeast Alaska averaged 7.7 million fish per year since 2010; hatchery-produced fish accounted for an average 86% of that harvest. Increased straying of hatchery chum salmon into streams in the Northern Southeast Outside Subregion from a new release site at Crawfish Inlet has complicated the assessment of wild chum salmon in that subregion and additional sampling is needed to determine the variation and geographic extent of straying from the new release site.
Author: Andrew W. Piston
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 44
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Book Description
Since the 1990s, pink salmon have been harvested in Southeast Alaska at the highest levels since record keeping began in the late 19th century. The harvest series in Southeast Alaska has exhibited odd-year dominance since 1999 and the magnitude of this cycle increased dramatically from 2006 to 2014. Even-year pink salmon harvests averaged only 22 million fish per year since 2006, primarily due to very low harvests in the Northern Southeast Inside Subregion, which have averaged only 2.5 million fish per year since 2006. Even-year harvests in the Southern Southeast Subregion quickly rebounded after a very low harvest of 3.3 million fish in 2006. The harvest of 33.2 million fish in the Southern Southeast Subregion in 2014 was the largest even-year harvest since 1996 and was approximately double the 1960?2012 average harvest for even years. Regionwide odd-year pink salmon harvests were below recent averages in 2007 and 2009 but rebounded to 59 million in 2011 and an all-time record harvest of 95 million in 2013. Pink salmon escapement indices have been consistently within or above escapement goals in the Southern Southeast and Northern Southeast Outside subregions but were below goal in the Northern Southeast Inside Subregion in four of the past five even years. We reviewed pink salmon escapement goals and recommend no changes to the three goals for pink salmon between Dixon Entrance and Cape Fairweather; however, we recommend elimination of the Situk River goal in the Yakutat area due to a lack of reliable escapement data. Twelve index streams unsuitable for consistent surveying were eliminated in the Northern Southeast Inside Subregion. At this time, no stocks of pink salmon in Southeast Alaska meet the criteria for stocks of concern as defined by the State of Alaska's Policy for Management of Sustainable Salmon Fisheries (5 AAC 39.222).
