Herring Spawning Surveys In Southeastern Alaska
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Herring Spawning Surveys In Southeastern Alaska
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Author : Bernard Einar Skud
language : en
Publisher:
Release Date : 1959
Herring Spawning Surveys In Southeastern Alaska written by Bernard Einar Skud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Atlantic herring categories.
Aerial surveys to observe milt clouds produced by spawning herring in Southeastern Alaska waters hold promise as a method for assessing the extent of spawn deposition. Flights are conducted at altitudes of 500 to 700 feet and at cruising speeds of 120 knots. The mileage of beach utilized for spawning is recorded on reduced prints of navigation charts. The surveys have resulted in the discovery of 80 previously unreported spawning beaches. Observations during these preliminary flights have also added valuable information on the time of spawning and the physical characteristics of the beaches.
Preliminary Forecasts Of Catch And Stock Abundance For Alaska Herring Fisheries
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Author :
language : en
Publisher:
Release Date : 1991
Preliminary Forecasts Of Catch And Stock Abundance For Alaska Herring Fisheries written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Herring fisheries categories.
Herring Spawning Surveys In Southeastern Alaska
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Author : Bernard Einar Skud
language : en
Publisher:
Release Date : 1959
Herring Spawning Surveys In Southeastern Alaska written by Bernard Einar Skud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Pacific herring categories.
Aerial surveys to observe milt clouds produced by spawning herring in southeastern Alaska waters hold promise as a method for assessing the extent of spawn deposition. Flights are conducted at altitudes of 500 to 700 feet and at cruising speeds of 120 knots. The mileage of beach utilized for spawning is recorded on reduced prints of navigation charts. The surveys have resulted in the discovery of 80 previously unreported spawning beaches. Observations during these preliminary flights have also added valuable information on the time of spawning and the physical characteristics of the beaches.
Herring Spawning Surveys In Southeastern Alaska Classic Reprint
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Author : Bernard Einar Skud
language : en
Publisher: Forgotten Books
Release Date : 2017-10-29
Herring Spawning Surveys In Southeastern Alaska Classic Reprint written by Bernard Einar Skud and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-29 with Business & Economics categories.
Excerpt from Herring Spawning Surveys in Southeastern Alaska The purpose of this report is (l) to describe the procedures of the aerial survey and (2) to record preliminary information gained from surveys of the past three years. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Herring Spawning Survey In Southeastern Alaska
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Author : Bernard Einer Skud
language : en
Publisher:
Release Date : 1959
Herring Spawning Survey In Southeastern Alaska written by Bernard Einer Skud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with categories.
Aerial surveys to observe milt clouds produced by spawning herring in southeastern Alaska waters hold promise as a method for assessing the extent of spawn deposition. Flights are conducted at altitudes of 500 to 700 feet and at cruising speeds of 120 knots. The mileage of beach utilized for spawning is recorded on reduced prints of navigation charts. The surveys have resulted in the discovery of 80 previously unreported spawning beaches. Observations during these preliminary flights have also added valuable information on the time of spawning and the physical characteristics of the beaches.
Statistics Of The Alaska Herring Fishery 1878 1956
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Author : Bernard Einar Skud
language : en
Publisher:
Release Date : 1960
Statistics Of The Alaska Herring Fishery 1878 1956 written by Bernard Einar Skud and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Pacific herring fisheries categories.
Herring Spawning Surveys Southern Bering Sea
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Author : Irving M. Warner
language : en
Publisher:
Release Date : 1977
Herring Spawning Surveys Southern Bering Sea written by Irving M. Warner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Fishes categories.
Southeast Alaska 2020 Herring Stock Assessment Surveys
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Author : Kyle Peter Hebert
language : en
Publisher:
Release Date : 2022
Southeast Alaska 2020 Herring Stock Assessment Surveys written by Kyle Peter Hebert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Fish stock assessment categories.
Pacific herring Clupea pallasii are important prey for many marine species found in Southeast Alaska and are harvested in fisheries for subsistence, personal use, commercial, and research purposes. The Southeast Alaska Herring Management plan (5 AAC 27.190(3)) requires the Alaska Department of Fish and Game to assess the abundance of mature herring for each stock before allowing commercial harvest. Included here are results of stock assessment surveys completed primarily during 2020, including summaries of herring spawn deposition surveys and age-weight-length sampling, which are the principal model inputs used to forecast herring abundance. In 2020, spawn deposition surveys were conducted only for Sitka Sound, Craig, and Revilla Channel area stocks. Spawn deposition surveys were not conducted in several other traditionally major spawning areas due to lack of funding or low levels of observed spawn, although aerial surveys of spawning were continued on a limited basis. The shoreline in state waters where spawn was documented in Southeast Alaska during aerial surveys in 2020, combined for all areas, was 142.6 nautical miles. Post-fishery spawn deposition biomass estimates, combined for all surveyed stocks, totaled 412,794 tons. During the 2019–2020 season, a commercial winter bait fishery was opened in Craig with a guideline harvest level (GHL) of 6,608 tons. A commercial purse seine sac-roe fishery was planned in Sitka Sound with a GHL of 25,824 tons; however, no fishery openings were announced due to high abundance of young, and therefore small, herring that were below desired marketable size. A commercial spawn-on-kelp fishery was open in Craig with an allocation of 10,118 tons of herring, allowing for the highest kelp allocation for pounds. There were no other commercial fisheries opened in 2020. Herring harvested commercially during the 2019–2020 season totaled 896 tons, not including herring pounded for spawn-on-kelp fisheries or spawn-on-kelp products.
Southeast Alaska 2019 Herring Stock Assessment Surveys
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Author : Kyle Peter Hebert
language : en
Publisher:
Release Date : 2020
Southeast Alaska 2019 Herring Stock Assessment Surveys written by Kyle Peter Hebert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Fish stock assessment categories.
Pacific herring Clupea pallasii are important prey for many marine species found in Southeast Alaska and are harvested in commercial fisheries (bait, sac roe, spawn-on-kelp), and for subsistence, personal use, and research purposes. The Southeast Alaska Herring Management plan (5 AAC 27.190(3)) requires the Alaska Department of Fish and Game to assess the abundance of mature herring for each stock before allowing commercial harvest. Included here are results of stock assessment surveys completed primarily during 2019, including summaries of herring spawn deposition surveys and age-weight-length sampling, which are the principle model inputs used to forecast herring abundance. In 2019, spawn deposition surveys were conducted only for Sitka Sound, Craig, and Revilla Channel area stocks. Spawn deposition surveys were not conducted in several other traditionally major spawning areas due to lack of funding, although aerial surveys of spawning were continued on a limited basis. The shoreline in state waters where spawn was documented during aerial surveys in 2019, combined for all areas, was 111.0 nautical miles. Post-fishery spawn deposition biomass estimates, combined for all surveyed stocks, totaled 169,514 tons. During the 2018–2019 season, a commercial winter bait fishery was opened in Craig with a guideline harvest level (GHL) of 2,344 tons. A commercial purse seine sac-roe fishery was planned in Sitka Sound with a GHL of 12,869 tons; however, no openings were announced due to high abundance of young/small herring that were below desired marketable size. A commercial spawn-on-kelp fishery was open in Craig with an allocation of 2,911 tons of herring. There were no other commercial fisheries opened in 2019. Herring harvested commercially during the 2018–2019 season totaled 995 tons, not including herring pounded for spawn-on-kelp fisheries or spawn-on-kelp products.
Southeast Alaska 2018 Herring Stock Assessment Surveys
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Author : Kyle Peter Hebert
language : en
Publisher:
Release Date : 2019
Southeast Alaska 2018 Herring Stock Assessment Surveys written by Kyle Peter Hebert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Fish stock assessment categories.
Pacific herring, Clupea pallasii, are important prey for many marine species found in Southeast Alaska and are also harvested in fisheries for commercial bait, commercial sac roe, commercial spawn-on-kelp, subsistence spawn-on-branches, subsistence spawn-on-kelp, personal use, and research/cost-recovery purposes. The Southeast Alaska Herring Management plan (5 AAC 27.190(3)) requires the Alaska Department of Fish and Game to assess the abundance of mature herring for each stock before allowing commercial harvest. Included here are results of stock assessment surveys completed primarily during 2018, including summaries of herring spawn deposition surveys and age-weight-length sampling, which are the principle model inputs used to forecast herring abundance. In 2018 spawn deposition surveys were conducted only for Sitka Sound and Craig stocks. Spawn deposition surveys were not conducted in several other traditionally major spawning areas in 2018, due to lack of funding resulting from cuts to state budgets, although aerial surveys of spawning were continued on a limited basis. The shoreline in state waters where spawn was documented during aerial surveys in 2018, combined for all areas, was 63.7 nautical miles. In 2018, post-fishery spawn deposition biomass estimates, combined for both surveyed stocks, totaled 78,839 tons.