Download Full eBooks in PDF
The Incidence Of Anadromy And Season Estuary Use Of Native Atlantic Salmon And Brook Charr And Invasive Brown Trout Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of The Incidence Of Anadromy And Season Estuary Use Of Native Atlantic Salmon And Brook Charr And Invasive Brown Trout book. This book definitely worth reading, it is an incredibly well-written.
Author : Dwight S. Danie,Joan G. Trial,Jon G. Stanley
Publisher : Unknown
Page : 32 pages
File Size : 52,8 Mb
Release : 1984
Category : Coastal ecology
ISBN : UOM:39015086472217
Author : Peter A. Bisson
Publisher : Unknown
Page : 36 pages
File Size : 48,6 Mb
Release : 2006
Category : Atlantic salmon
ISBN : MINN:31951D02974977N
This report describes the evidence for invasion of Pacific Northwest streams by Atlantic salmon (Salmo salar) that have escaped from marine salmon farms, and assesses the potential impact of farmed salmon invasion on native fishes inhabiting streams on National Forest System lands. The current risk to streams on National Forest lands in the Pacific Northwest from Atlantic salmon invasions appears to be low and is limited to a few areas in northwest Washington and southeast Alaska. However, long-term risks may be substantial if fish continue to escape from marine rearing pens or freshwater hatcheries. The two greatest threats appear to be that (1) Atlantic salmon could transmit a serious disease or parasite to native fishes, and (2) escaped salmon could eventually adapt to local conditions, leading to self-sustaining populations. If Atlantic salmon populations are eventually established, this species preference for swiftly flowing stream habitats could facilitate competition with currently at-risk species such as steelhead (Oncorhynchus mykiss). This could result in a pattern of expansion similar to that observed in other nonnative aquatic plants and animals, in which a prolonged early colonization period is followed by a rapid phase of exponential growth as breeding populations adapt to local conditions.
Author : Bror Jonsson,Nina Jonsson
Publisher : Springer Science & Business Media
Page : 720 pages
File Size : 55,5 Mb
Release : 2011-05-03
Category : Science
ISBN : 9789400711891
Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Author : Jon G. Stanley,Joan G. Trial,United States. National Biological Service
Publisher : Unknown
Page : 28 pages
File Size : 42,8 Mb
Release : 1995
Category : Atlantic salmon
ISBN : ERDC:35925003190391
Model was developed by evaluating individual suitability indices of 17 environmental variables that have been shown to affect productivity or survival of nonmigratory freshwater life history stages of Atlantic salmon (Salmo salar L.).
Author : Jeffrey Christopher Laufle,Gilbert B. Pauley,Michael F. Shepard
Publisher : Unknown
Page : 32 pages
File Size : 40,5 Mb
Release : 1986
Category : Coastal ecology
ISBN : UOM:39015086472472
Author : Michael Francis O'Connell
Publisher : Unknown
Page : 670 pages
File Size : 54,8 Mb
Release : 1982
Category : Brook trout
ISBN : OCLC:455947757
Author : National Research Council Canada,Canada. Department of Fisheries and Oceans
Publisher : NRC Research Press
Page : 276 pages
File Size : 47,9 Mb
Release : 1993
Category : Technology & Engineering
ISBN : 0660149540
Up-to-date information, knowledge and research in progress in scientific fields related to natural production of juvenile Atlantic salmon and some other ecologically similar fluvial salmonids is contained in the 25 papers and 12 abstracts contained in this publication, which were prepared for an international symposium held in St. John's, Newfoundland. Studies relate to stream ecology, invertebrates and predators, habitat improvement, competitive effects, behaviour and dispersal, habitat and production of juvenile salmon, population dynamics and relationships of juvenile salmon estimates to smolt yields. A list of participants at the conference is also provided.
Author : Patrick W. Bley,John R. Moring
Publisher : Unknown
Page : 32 pages
File Size : 41,9 Mb
Release : 1988
Category : Anadromous fishes
ISBN : PURD:32754004389692
Author : Javier Lobón-Cerviá,Nuria Sanz
Publisher : John Wiley & Sons
Page : 821 pages
File Size : 45,7 Mb
Release : 2017-12-18
Category : Technology & Engineering
ISBN : 9781119268314
Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.
Author : Patrick W. Bley
Publisher : Unknown
Page : 36 pages
File Size : 51,5 Mb
Release : 1987
Category : Atlantic salmon
ISBN : MINN:31951002952985W
Author : Dwight S. Danie,Joan G. Trial,Jon G. Stanley
Publisher : Unknown
Page : 19 pages
File Size : 46,7 Mb
Release : 1984
Category : Atlantic salmon
ISBN : OCLC:11749795
Author : National Research Council,Division on Earth and Life Studies,Ocean Studies Board,Board on Environmental Studies and Toxicology,Committee on Atlantic Salmon in Maine
Publisher : National Academies Press
Page : 308 pages
File Size : 49,9 Mb
Release : 2004-10-07
Category : Technology & Engineering
ISBN : 0309091357
Because of the pervasive and substantial decline of Atlantic salmon populations in Maine over the past 150 years, and because they are close to extinction, a comprehensive statewide action should be taken now to ensure their survival. The populations of Atlantic salmon have declined drastically, from an estimated half million adult salmon returning to U.S. rivers each year in the early 1800s to perhaps as few as 1,000 in 2001. The report recommends implementing a formalized decision-making approach to establish priorities, evaluate options and coordinate plans for conserving and restoring the salmon.
Author : E. Kamler
Publisher : Springer Science & Business Media
Page : 279 pages
File Size : 43,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401123242
Among the fishes, a remarkably wide range of biological adaptations to diverse habitats has evolved. As well as living in the conventional habitats of lakes, ponds, rivers, rock pools and the open sea, fish have solved the problems of life in deserts, in the deep sea, in the cold Antarctic, and in warm waters of high alkalinity or of low oxygen. Along with these adaptations, we find the most impressive specializations of morphology, physiology and behaviour. For example we can marvel at the high-speed swimming of the marlins, sailfish and warm-blooded tunas, air breathing in catfish and lungfish, parental care in the mouth-brooding cichlids and viviparity in many sharks and toothcarps. Moreover, fish are ofconsiderable importance to the survival ofthe human species in the form of nutritious and delicious food of numerous kinds. Rational exploitation and management of our global stocks of fishes must rely upon a detailed and precise insight of their biology. The Chapman and Hall Fish and Fisheries Series aims to present timely volumes reviewing important aspects of fish biology. Most volumes will be of interest to research workers in biology, zoology, ecology and physiology, but an additional aim is for the books to be accessible to a wide spectrum ofnon specialist readers ranging from undergraduates and postgraduates to those with an interest in industrial and commercial aspects of fish and fisheries.
Author : Thomas J. Hassler
Publisher : Unknown
Page : 20 pages
File Size : 48,7 Mb
Release : 1987
Category : Coastal ecology
ISBN : MINN:30000010627150
Author : William Landram McFarland
Publisher : Unknown
Page : 212 pages
File Size : 41,6 Mb
Release : 1925
Category : Atlantic salmon
ISBN : CORNELL:31924002868945