Download or read book Yellowstone Lake Trout Creel Census 1950 51 written by Harvey L. Moore and published by . This book was released on 1952 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Yellowstone Lake Trout Creel Censuses 1950 51 Classic Reprint written by Harvey L. Moore and published by Forgotten Books. This book was released on 2017-11-28 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Yellowstone Lake Trout Creel Censuses, 1950-51 Because of the problem of increased fishing pressure on Yellowstone Lake, the Fish and Wildlife Service, at the request of the National Park Service, initiated an extensive study to learn the effects of the ih crease, and to make recommendations, based on their findings, for a plan for a sustained yield fishery. This report is concerned with the results of the first two years of creel census studies. The study was initiated in 1950 and expanded in 1951 for collecting data for the determination of total annual fishing mortality. Data were collected in such a.manner that fishing effort and success could be analysed for relative annual and intro-seasonal changes, and for differences between.major fishing areas of the lake. 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.

Download or read book Special Scientific Report written by and published by . This book was released on 1952 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book N O A A Technical Report NMFS SSRF written by and published by . This book was released on 1952 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Progressive Fish Culturist written by U.S. Fish and Wildlife Service and published by . This book was released on 1953 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salmon Research at Deer Creek Calif written by Frederick K Cramer and published by . This book was released on 1952 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Ecology of the Mallard written by and published by . This book was released on 1972 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resource Publication United States Bureau of Sport Fisheries and Wildlife written by and published by . This book was released on 1973 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resource Publication written by and published by . This book was released on 1965 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Research Publications of the U S Bureau of Sport Fisheries and Wildlife 1928 72 written by Paul Henry Eschmeyer and published by . This book was released on 1974 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Research Publications 1928 72 written by Paul H. Eschmeyer and published by . This book was released on 1974 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mortality Studies on Cutthroat Trout in Yellowstone Lake by Orville P Ball and Oliver B Cope written by Orville P. Ball and published by . This book was released on 1961 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a study of the Yellowstone Lake cutthroat trout, Salmo clarki lewisi, by the U.S. Fish and Wildlife Service, effects of environment on mortality of eggs, immature fish, spawners, and postspawners were measured for various components of the population in Yellowstone Lake (Wyoming). Five methods for estimating mortality of adults on spawning runs are described, with counting and tagging as the principal procedures. Of the total number of eggs deposited in the gravel, 60 to 75 percent died before hatching, and 99.6 percent had died by the time the fingerlings enetered Yellowstone Lake. In Arnica Creek runs, 48.6 percent died in the stream, 40.2 died later in the lake of natural causes, 7.6 were taken by fishermen, and 3.6 percent were alive 2 years later. The white pelican is a serious predator on cutthroat trout in Yellowstone Lake. From 1949 to 1953 fishermen caught 11.6 percent of the catchable trout available to them. Migrations of adult fish in Yellowstone Lake were traced through tagging.

Download or read book Creel Census and Expenditure Study North Fork Sun River Montana 1951 written by and published by . This book was released on 1954 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1953 with total page 1500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Creel Census and Expenditure Study Madison River Montana 1950 52 written by and published by . This book was released on 1954 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Equilibrium Yield and Management of Cutthroat Trout in Yellowstone Lake written by Norman Gustaf Benson and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equilibrium yield of the cutthroat trout, Salmo clarki lewisi Girard, in Yellowstone Lake, Wyo., is determined from data on catch and spawning runs from 1945 to 1961. Changes in growth rate, spawning runs, mortality rates, and year-class strength are related to differences in total catch. Three stages of exploitation of the stock are defined and the maximum safe catch or equilibrium yield is estimated at 325,000 trout. Management of the sport fishery according to equilibrium yield is discussed with reference to regulations, distribution of fishing pressure, planting, and interspecific competition. The Yellowstone River fishery is treated briefly.