Status of Columbia River Blueback Salmon Runs, 1951 (Classic Reprint) PDF Download
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Author: U. S. Fish and Wildlife Service Publisher: Forgotten Books ISBN: 9781333863371 Category : Business & Economics Languages : en Pages : 40
Book Description
Excerpt from Status of Columbia River Blueback Salmon Runs, 1951 Extremely high water in 19h8 limited surveys to only a portion of the area. The areas that could be counted were compared with counts of 19h? And a similar ratio applied to obtain an estimate for 19l8. 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.
Author: U. S. Fish and Wildlife Service Publisher: Forgotten Books ISBN: 9781333863371 Category : Business & Economics Languages : en Pages : 40
Book Description
Excerpt from Status of Columbia River Blueback Salmon Runs, 1951 Extremely high water in 19h8 limited surveys to only a portion of the area. The areas that could be counted were compared with counts of 19h? And a similar ratio applied to obtain an estimate for 19l8. 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.
Author: R. R. French Publisher: ISBN: 9781332776788 Category : Science Languages : en Pages : 26
Book Description
Excerpt from Salmon Runs Upper Columbia River, 1956-57 The rate of travel of blueback salmon between Rock Island Dam and Zosel Dam established from tagging experiments was found to be days for the 145 miles distance or miles per day. The difference in time between peaks of abundance at Rock Island and Zosel Dalm also indicated that about lo'hys were required for fish to travel between the two points. 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.
Author: Harold A. Gangmark Publisher: Forgotten Books ISBN: 9780666304834 Category : Business & Economics Languages : en Pages : 28
Book Description
Excerpt from Fluctuations in Abundance of Columbia River Chinook Salmon 1928-54 The above rule applied to spring and summer fishing. No zero catches were estimated in the fall since chi nook fishing usually comes to a standstill for the year as soon as the catches drop off to the point where fishermen can do better using smaller meshed nets for silvers (9. Kisutch), and chinook catches thus become incidental. 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.
Author: Willis Horton Rich Publisher: ISBN: Category : Pacific salmon fisheries Languages : en Pages : 45
Book Description
Exceptional data are available for the study of the salmon runs of the Columbia River in 1938. Detailed figures on catch were supplied by Oregon and Washington in such form that they could readily be combined with the counts at Bonneville Dam to provide a basis for estimating the escapement. Tables show the catch of each species for each week in each of six zones, and the counts at Bonneville and Rock Island dams. The general course of the run of each species is shown. The numbers of fish bound for the spawning grounds above Rock Island Dam are estimated as follows: Chinook salmon entering Columbia River before May 1, 4 percent; during May, 6 percent; June and July, 15 percent; and August to December, 1 percent. Blueback salmon entering the river during the above periods, 40 percent. Steelhead trout entering the river during June to September, 1 percent; during the rest of the year, 10 percent. Fishing intensities are shown by escapement to catch ratios. Percentages of chinook salmon escapement are less than 15 during May; 17 during June and July; and 33 during the remainder of the year. The June and July runs are now greatly depleted, and an important part of these runs spawns above Rock Island Dam. The blueback salmon escapement is about 20 percent, and of steelhead trout about 33 percent. Weekly and seasonal closed periods are shown to be almost entirely ineffective for increasing the spawning escapement. Exploitation is further increased by the intensive troll fishery conducted from Monterey Bay to southeastern Alaska. Chinook salmon are also subjected to a sport fishery of considerable importance. Main runs of salmon to the Columbia River are practically unprotected and are fished with destructive intensity.
Author: Robert R. French Publisher: Forgotten Books ISBN: 9781333092177 Category : Sports & Recreation Languages : en Pages : 28
Book Description
Excerpt from Biology of Chinook and Blueback Salmon and Steelhead in the Wenatchee River System The Wenatchee River contains important runs of salmon and steelhead trout. Peak yearly adult counts at Tumwater Dam for 1955 - 1957 were blueback salmon. 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.
Author: Leonard A. Fulton Publisher: Forgotten Books ISBN: 9781333761677 Category : Sports & Recreation Languages : en Pages : 56
Book Description
Excerpt from Spawning Areas and Abundance of Chinook Salmon (Oncorhynchus Tshawytscha) In the Columbia River Basin: Past and Present Spawn in intermediate and large tribu taries and in middle reaches of the main stem. Spring-run chinook salmon Spawn in some lower Columbia River tributaries such as the Willamette, Cowlitz, and Kalama Rivers. They also are distributed in middle tributaries of the Columbia and Snake Rivers. (fall-run chinook salmon, discussed later in the report, share spawning grounds in some sections of the Cowlitz and Kalama Rivers.) These are not all of the areas in which such duplications occur but are cited as examples. 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.
Author: John B. Branson Publisher: Department of Interior National Park Service Lake Clark National Park & Preserve ISBN: 9780979643217 Category : Bristol Bay (Alaska) Languages : en Pages : 264
Author: U. S. Fish and Wildlife Service
Author: U. S. Fish and Wildlife Service
Author: R. R. French
Author: Ivan Donaldson
Author: Harold A. Gangmark
Author: Willis H. RICH
Author: Willis Horton Rich
Author: Robert R. French
Author: Leonard A. Fulton
Author: John B. Branson
Author: Joachim Carolsfeld