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Book Acoustic Estimates of Abundance and Distribution of Spawning Lake Trout on Sheboygan Reef in Lake Michigan

Download or read book Acoustic Estimates of Abundance and Distribution of Spawning Lake Trout on Sheboygan Reef in Lake Michigan written by David M. Warner and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efforts to restore self-sustaining lake trout (Slavelinus namaycush) populations in the Laurentian Great Lakes have had widespread success in Lake Superior; but in other Great Lakes, populations of lake trout are maintained by stocking. Recruitment bottlenecks may be present at a number of stages of the reproduction process. To study eggs and fry, it is necessary to identify spawning locations, which is difficult in deep water. Acoustic sampling can be used to rapidly locate aggregations of fish (like apwning lake trout), we conducted an acoustic survey covering 22 km (2) at Sheboygan Reef, a deep reef (

Book The Lake Charr Salvelinus namaycush Biology Ecology Distribution and Management

Download or read book The Lake Charr Salvelinus namaycush Biology Ecology Distribution and Management written by Andrew M. Muir and published by Springer Nature. This book was released on 2021-03-03 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lake charr Salvelinus namaycush is a ubiquitous member of cold-water lake ecosystems in previously glaciated regions of northern continental U.S., Alaska, and Canada that often support important commercial, recreational, and subsistence fisheries. The lake charr differs from other charrs by its large size, longevity, iteroparity, top-predator specialization, reduced sexual dimorphism, prevalence of lacustrine spawning, and use of deepwater habitat. The species is remarkably variable in phenotype, physiology, and life history, some of which is reflected in its ecology and genetics, with as many as four morphs or ecotypes co-occurring in a single lake. The lake charr is often the top predator in these systems, but is highly adaptable trophically, and is frequently planktivorous in small lakes. The lake charr by their name highlights their common habitat, lakes both large and small, but often frequents rivers and occasionally moves into the Arctic Ocean. Movement and behaviour of lake charr are motivated by access to cool, well-oxygenated water, foraging opportunities, predator avoidance, and reproduction. Owing to their broad distribution and trophic level, the lake charr serves as a sentinel of anthropogenic change. This volume will provide an up-to-date summary of what is currently known about lake charr from distribution to genetics to physiology to ecology. The book provides a compilation and synthesis of available information on the lake charr, beginning with an updated distribution and a revised treatment of the paleoecology of the species. Understanding of ecological and genetic diversity and movement and behaviour of the species has advanced remarkably since the last major synthesis on the species over 40 years ago. Mid-sections of the book provide detailed accounts of the biology and life history of the species, and later sections are devoted to threats to conservation and fishery management practices used to ensure sustainability. A new standard lake charr-specific terminology is also presented. The book will be a valuable reference text for biologists around the world, ecologists, and fishery managers, and of interest to the angling public.

Book Biology of Young Lake Trout Salvelinus Namaycush in Lake Michigan

Download or read book Biology of Young Lake Trout Salvelinus Namaycush in Lake Michigan written by John Van Oosten and published by . This book was released on 1956 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental fishing with gill nets of 5 mesh sizes (2 3/8 to 3 inches) in Lake Michigan in 1930-32 yielded more than 16,000 young lake trout. Data are presented here on age, growth, length-weight relationship, abundance, geographical and bathymetric distribution, and other details of their biology.

Book Hydroacoustic Assessment of Lake Trout Salvelinus Namaycush Populations microform

Download or read book Hydroacoustic Assessment of Lake Trout Salvelinus Namaycush Populations microform written by Trevor A. (Trevor Anthony) Middel and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the use of hydroacoustic sampling methods to assess the abundance and distribution of lake trout in a single lake. Chapter One focuses upon the development of a target-strength to fish-length relationship for lake trout at a frequency of 120 kHz. A significant and positive relationship was found between target-strength and length (TS = 20 log10 (TLEN) - 65.3) which is comparable to relationships found for other physostomous species of fish. The second chapter applies this relationship to data from monthly acoustic surveys conducted from June--September on a lake trout lake for which mark-recapture population estimates of lake trout are available. Abundance estimates calculated from July, August and September surveys compared favourably to each other and to mark-recapture population estimates. The results of this study suggest that more work is required to determine an optimal sampling season and the sampling intensity required to obtain more precise abundance estimates.

Book Acoustic Determination of Fish Distribution and Abundance in Lake Michigan with Special Reference to Temperature

Download or read book Acoustic Determination of Fish Distribution and Abundance in Lake Michigan with Special Reference to Temperature written by Stephen Bernard Brandt and published by . This book was released on 1975 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Summary of Abundance and Density Estimates for Selected Lake Trout Populations in the Alaska Range and an Examination of Trends in Yield

Download or read book A Summary of Abundance and Density Estimates for Selected Lake Trout Populations in the Alaska Range and an Examination of Trends in Yield written by John M. Burr and published by . This book was released on 1992 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report estimating abundance and density of lake trout (Salvelinus namaycush) from seven lakes (Paxson, Sevenmile, Twobit, Glacier, Tangle Lakes, and Butte) in central Alaska, south of Fairbanks.

Book A Model to Link Habitat Supply to Population Dynamics for Lake Trout Salvelinus Namaycush Populations in Western Lake Superior

Download or read book A Model to Link Habitat Supply to Population Dynamics for Lake Trout Salvelinus Namaycush Populations in Western Lake Superior written by John Netto (Ph. D.) and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fisheries Research Report

Download or read book Fisheries Research Report written by and published by . This book was released on 1973 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Preliminary Investigation of Spawning Habitat Conditions and Reproduction of Lake Trout in Eastern Lake Michigan Near Port Sheldon Michigan

Download or read book Preliminary Investigation of Spawning Habitat Conditions and Reproduction of Lake Trout in Eastern Lake Michigan Near Port Sheldon Michigan written by John A. Dorr and published by . This book was released on 1981 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Atlas of the spawning and nursery areas of Great Lakes Fishes

Download or read book Atlas of the spawning and nursery areas of Great Lakes Fishes written by U.S. Fish and Wildlife Service. Office of Biological Services and published by . This book was released on 1982 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Source Abundance and Fate of Lake Trout Eggs on Julian s Reef

Download or read book Source Abundance and Fate of Lake Trout Eggs on Julian s Reef written by William H. Horns and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: