JTC Annual Technical Reports
NEW!!!Yukon River Salmon 2007 Season Summary and 2008 Season Outlook
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YUKON RIVER SALMON 2006 SEASON SUMMARY AND 2007 SEASON OUTLOOK
Prepared by
THE UNITED STATES and CANADA
YUKON RIVER JOINT TECHNICAL COMMITTEE
May 2007
Regional Information Report No. 3A07-01
Regional Information Reports are available through the Alaska State Library and on the Internet at: http://www.sf.adfg.ak.us/statewide/divreprots/htlm/intersearch.cfm.
This document should be cited as:
JTC (Joint Technical Committee of the Yukon River US/Canada Panel). 2007. Yukon River salmon 2006 season summary and 2007 season outlook. Alaska Department of Fish and Game, Division of Commercial Fisheries, Regional Information Report No. 3A07-01, Anchorage.
Table of Contents
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7.2.5.1 Fishing Branch River Fall Chum Salmon Weir
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7.2.5.2 Porcupine River Fall Chum Salmon Mark–Recapture Program
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7.2.5.3 Stock Identification of Yukon River Chinook and Fall Chum Salmon using Microsatellite DNA Loci
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7.2.7.1 Croucher Creek: Juvenile Chinook Salmon/Beaver Interactions
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7.2.7.2 Klondike River Ground Water Channels: Juvenile Chinook Salmon Utilization
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7.2.7.3 Mickey Creek: Long-term Effects of Forest Fires on Salmon Habitats in Un-glaciated, Permafrost Dominated Landscapes
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8.2.4.1 Upper Yukon Chinook Salmon
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8.2.4.2 Upper Yukon Fall Chum Salmon
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8.2.4.3 Fishing Branch River Fall Chum Salmon
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Development of the current suite of alternatives
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Summary of the Alternatives
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Enforcement Activities in 2006
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Enforcement Activities in 2006
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Planned Activities in 2007
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Enforcement Activities in 2006
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Planned Activities in 2007
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Enforcement Activities in 2006
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Planned Activities in 2007
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Preliminary results from Chinook salmon sampled for Ichthyophonus in 2006, by test methodology, Yukon Area. |
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Preliminary results of infection prevalence by spawn out category for female Chinook salmon sampled for Ichthyophonus on the spawning grounds in 2006, Yukon Area. |
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Estimation of the number of fall chum salmon at Old Crow Y.T. derived from a mark-recapture program. |
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Estimation of the number of fall chum salmon at Old Crow Y.T. derived from a mark-recapture program. |
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Estimated percentage stock composition of fall chum salmon migrating past the fish wheel tagging program at Bio Island, 2006. |
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Estimated percentage stock composition of Chinook salmon migrating past the fish wheel tagging program at Bio Island, 2006. |
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Baseline used to estimate stock compositions of fall chum salmon from the fish wheel tagging program at Bio Island, 2006. |
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Baseline used to estimate stock compositions of Chinook salmon from the fish wheel tagging program at Bio Island, 2006. |
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Preseason drainage-wide fall chum salmon outlooks and observed run sizes for the Yukon River, 1998-2006. |
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Projected return of fall chum salmon based on parent year escapement for each brood year and predicted return per spawner (R/S) rates, Yukon River, 2001-2004. |
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Preseason Upper Yukon Chinook salmon outlooks and observed run sizes for the 1998-2006 period. |
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Preseason Upper Yukon fall chum salmon outlooks and observed run sizes for the 1998-2006 period. |
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Outlook for the 2007 Fishing Branch River fall chum salmon run developed using brood year escapement data, a return/spawner value of 2.5 and an average age composition. |
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Preseason Porcupine River fall chum salmon outlooks and observed run sizes for the 1998-2006 period. |
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Expected 2007 Canadian-origin Upper Yukon Chinook salmon run size with potential US and Canadian and harvests based on different escapement targets. |
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Expected 2007 Canadian-origin Upper Yukon fall chum salmon run size and potential Canadian and US and harvests based on an escapement target of 80,000. |
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Base level escapement to the Fishing Branch weir with the 2007 escapement targets for one, two and three cycle rebuilding options. |
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Expected 2007 Fishing Branch River fall chum salmon run size with the total allowable catch based on one, two and three cycle escapement targets. |
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Yukon River escapement goals set for Chinook salmon in 2005 were continued in 2006 and will be in effect for 2007. |
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Yukon River escapement goals set for summer chum salmon in 2005 were continued in 2006 and will be in effect for 2007. |
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Yukon River escapement goals set for fall chum salmon in 2005 were continued in 2006 and will be in effect for 2007. |
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Alaska portion of the Yukon River drainage showing communities and fishing districts. |
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Daily test fish CPUE for Chinook salmon test fish sites 2006 compared to the 1989-2005 average (above). Cumulative test fish CPUE for Chinook salmon test fish sites in 2006 (below) compared to the1989-2005 average CPUE. |
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Daily Pilot Station sonar passage counts attributed to fall chum salmon in 2006 (top), compared to 1995 and 1997 through 2005 average. Cumulative Pilot Station sonar passage counts attributed to fall chum salmon in 2006 (bottom), compared to 1995 and 1997 though 2005 average. |
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Schematic representation of the approximate river profile in 2005 and associated nominal beam-width of the DIDSONTM and split-beam sonar of the first sampling stratum on the left bank. |
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Yukon River mainstem Canadian Chinook salmon spawners versus estimated returns and the 1:1 replacement line. |
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Sockeye and chum salmon catch in the South Peninsula June fishery, 1980-2006. |
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World Chinook salmon catch, 1952-2003. |
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World chum salmon catch, 1952-2004. |
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Number of wild and hatchery chum salmon in the North Pacific Ocean 1925-2002. |
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Statistical reporting areas and chum salmon savings area for the US groundfish fisheries in the Bering Sea. |
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Statistical reporting areas and Chinook salmon saving areas for the US groundfish fisheries in the Bering Sea. |
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Exvessel value of the catch in the commercial fisheries off Alaska by species in millions, 1982-2006. |
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Salmon bycatch in the Gulf of Alaska and Bering Sea Groundfish fishery, 1990-2006. |
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Coded wire tagged Chinook salmon from the Whitehorse hatchery recovered from the domestic and research catches in the Bering Sea, and high seas tagged Chinook salmon recovered in the Yukon River. |
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The Convention prohibits direct fishing for anadromous fish (chum, coho, pink, sockeye, Chinook, and cherry salmon, and steelhead trout) in the Convention Area.. |
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U.S. BASIS sampling stations, juvenile Chinook salmon catches, juvenile chum salmon catches, and immature chum salmon catches in 2006. |
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(A) Stock composition of ocean age-1 chum salmon mixture caught in the western North Pacific Ocean. (B) Stock composition of ocean age-2-5 chum salmon mixtures caught in the Gulf of Alaska. |
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Comparison of stock composition estimates of young chum salmon (ocean age-1) caught in the western North Pacific Ocean during winter 2006 using mtDNA and SNP markers. |
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Spatial distribution of high seas salmon tagging operations (number of operations in 2° latitude by x 5° longitude area strata), 1954-2005. |
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Distribution of releases of tagged fish (% of total releases) by region, 1954-2005. |
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Number of releases of tagged salmon (1,000s of fish) by month, 1954-2005. |
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Number of salmon released (top) during high seas tagging experiments, 1954-2005 (total = 413,216 fish); number of reported tagged salmon recoveries (bottom) in the AYK region (Norton Sound, Yukon, Kuskokwim), 1956-2006 (total = 347 fish). |
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Number of tagged fish released by species and ocean region, 1954-2005. |
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The known ocean distribution of maturing AYK pink salmon by month, as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of maturing AYK coho salmon by month, as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of immature (left) (4 fish) and maturing (right) (9 fish) Yukon (Y) and Kuskokwim (K) sockeye salmon by stock (top), month of release (center), and ocean age group at release (bottom) (X=ocean age unknown), as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of immature Norton Sound (N), Yukon (Y), and Kuskokwim (K) chum salmon by month, ocean age group (left), and stock (right), as indicated by high seas tag experiments 1954-2006. |
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The known ocean distribution of maturing Norton Sound chum salmon by ocean age group and month, as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of maturing Yukon River summer (left) and fall (right) chum salmon by ocean age group and month, as indicated by high seas tag experiments 1954-2006. |
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The known ocean distribution of maturing Kuskokwim River chum salmon by ocean age group and month, as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of maturing (top) and immature Yukon and Kuskokwim Chinook salmon by month, as indicated by high seas tag experiments, 1954-2006. |
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The known ocean distribution of Canadian Yukon hatchery Chinook salmon by month, as determined by marine recoveries of coded wire tagged fish, 1992-2006. |
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| Appendix A Tables, Appendix B Tables and Appendix B Figures |
Appendix A Tables |
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Alaskan commercial salmon sales and estimated harvest by district 2006. |
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Pilot Station sonar project estimates, Yukon River drainage, 1995, 1997-2006. |
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The Yukon River drainage summer chum salmon management plan overview, 2006. |
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The Yukon River drainage fall chum salmon management plan, 5 AAC 01.249, 2006. |
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Canadian weekly commercial catches of Chinook, fall chum and coho salmon in the Yukon River in 2006. |
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Salmon fishery projects conducted in the Alaskan portion of the Yukon River drainage in 2006. |
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List of harvest/escapement monitoring and incubation/rearing projects involving salmon in the Canadian portion of the Yukon River drainage in 2006. |
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Yukon River Canadian Chinook salmon total run by brood year, and escapement by year, 1982-1999 and Return per Spawner (R/S) (8-year-olds for Brood Year 1999 are projected). |
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Chinook salmon age and sex percentages from selected Yukon River escapement projects, 2006. |
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Summer chum salmon age and sex percentages from selected Yukon River escapement projects, 2006. |
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Total Yukon River Chinook salmon harvest proportion by stock group, 1981-2006. |
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Yukon River Chinook salmon harvest proportion by stock group in Alaska, 1981-2006. |
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Upper stock group proportion, by country, from the Yukon River Chinook salmon harvest, 1981-2006. |
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Summary of releases for coded wire tagged Chinook salmon from Whitehorse Hatchery, 1985-2006. |
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Summary of releases of Chinook salmon from Yukon Territory instream incubation/rearing sites 1991-2006. |
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Yukon River fall chum salmon estimated brood year production and return per spawner estimates 1974-2006. |
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Escapement, rebuilding and interim goals for Canadian origin Chinook and fall chum salmon stocks, 1985-2006. |
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June commercial sockeye and chum salmon harvest in South Unimak and Shumagin Islands, all gear combined, by year, 1980-2006. |
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Exvessel value of the catch in the commercial fisheries off Alaska by species group, 1982-2006, (value in $ millions). |
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Total groundfish catch and estimated number of Chinook and other salmon caught by the groundfish fisheries off the coast of Alaska, 1990 through 2006. |
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Coded wire tagged Yukon River Chinook salmon recoveries in the US groundfish fisheries. |
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Alaskan and Canadian total utilization of Yukon River Chinook, chum and coho salmon, 1903-2006. |
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Alaskan catch of Yukon River Chinook salmon, 1961-2006. |
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Alaska catch of Yukon River summer chum salmon, 1961-2006. |
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Alaskan catch of Yukon River fall chum salmon, 1961-2006. |
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Alaskan catch of Yukon River coho salmon, 1961-2006. |
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Alaskan and Canadian total utilization of Yukon River Chinook and fall chum salmon, 1961-2006. |
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Canadian catch of Yukon River Chinook salmon, 1961-2006. |
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Canadian catch of Yukon River fall chum salmon, 1961-2006. |
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Chinook salmon aerial survey indices for selected spawning areas in the Alaskan portion of the Yukon River drainage, 1961-2006. |
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Chinook salmon escapement counts for selected spawning areas in the Alaskan portion of the Yukon River drainage, 1986-2006. |
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Chinook salmon escapement counts for selected spawning areas in the Canadian portion of the Yukon River drainage, 1961-2006. |
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Summer chum salmon ground based escapement counts for selected spawning areas in the Alaskan portion of the Yukon River drainage, 1973-2006. |
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Fall chum salmon abundance estimates or escapement estimates for selected spawning areas in Alaskan and Canadian portions of the Yukon River Drainage, 1971-2006. |
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Coho salmon passage estimates or escapement estimates for selected spawning areas in the Alaskan portion of the Yukon River Drainage, 1972-2006. |
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Total utilization of salmon, Yukon River, 1961-2006. |
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Alaskan harvest of Chinook salmon, Yukon River, 1961-2006. |
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Alaskan harvest of summer chum salmon 1961-2006. |
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Alaskan harvest of fall chum salmon, Yukon River, 1961-2006. |
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Alaskan harvest of coho salmon, Yukon River, 1961-2006. |
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Canadian harvest of Chinook salmon, Yukon River, 1961-2006. |
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Canadian harvest of fall chum salmon, Yukon River, 1961-2006. |
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Total utilization of Chinook salmon, Yukon River, 1961-2006. |
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Chinook salmon ground based escapement estimates for selected tributaries in the Alaska portion of the Yukon River drainage, 1986-2006. |
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Chinook salmon escapement data for selected spawning areas in the Canadian portion of the Yukon River drainage, 1961-2006. |
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Summer chum salmon ground based escapement estimates for selected tributaries in the Alaska portion of the Yukon River drainage, 1980-2006. |
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Fall chum salmon escapement estimates for selected spawning areas in the Alaskan portion of the Yukon River drainage, 1971-2006. |
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Fall chum aerial survey data for selected spawning areas in the Canadian portion of the Yukon River drainage, 1971-2006. |
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Fall chum salmon escapement estimates for spawning areas in the Canadian portion of the Yukon River drainage, 1971-2006. |
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Estimated total Chinook salmon spawning escapement in the Canadian portion of the mainstem Yukon River drainage, 1982-2006. |
SYMBOLS AND ABBREVIATIONS
The following symbols and abbreviations, and others approved for the Système International d'Unités (SI), are used without definition in the following reports by the Divisions of Sport Fish and of Commercial Fisheries: Fishery Manuscripts, Fishery Data Series Reports, Fishery Management Reports, Special Publications and the Division of Commercial Fisheries Regional Reports. All others, including deviations from definitions listed below, are noted in the text at first mention, as well as in the titles or footnotes of tables, and in figure or figure captions.
Symbols and Abbreviations
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all standard mathematical signs, symbols and abbreviations
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alternate hypothesis |
H A |
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expected value |
E |
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null hypothesis |
H O |
base of natural logarithm |
e |
greater than |
> |
percent |
% |
catch per unit effort |
CPUE |
greater than or equal to |
³ |
probability |
P |
coefficient of variation |
CV |
harvest per unit effort |
HPUE |
probability of a type I error (rejection of the null hypothesis when true) |
a |
common test statistics |
F, t, c 2, etc. |
less than |
< |
probability of a type II error (acceptance of the null hypothesis when false) |
b |
confidence interval |
CI |
less than or equal to |
£ |
second (angular) |
" |
correlation coefficient (multiple) |
R |
logarithm (natural) |
ln |
standard deviation |
SD |
correlation coefficient (simple) |
r |
logarithm (base 10) |
log |
standard error |
SE |
covariance |
cov |
logarithm (specify base) |
log 2, etc. |
variance population |
Var |
degree (angular ) |
° |
minute (angular) |
' |
variance sample |
var |
degrees of freedom |
df |
not significant |
NS |
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