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Author :
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.3/5 (243 download)
Download or read book Studia Celtica written by and published by . This book was released on 1991 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey L. Kershner
Publisher :
ISBN 13 : 9781934874547
Total Pages : 831 pages
Book Rating : 4.8/5 (745 download)
Download or read book Trout and Char of the World written by Jeffrey L. Kershner and published by . This book was released on 2019 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive look at the taxonomy, life history, and conservation status of the world's trout and char. These are fascinating and beautiful fish that rate high for the angler as well as for tourist and recreational economies. Trout and char also play key roles in the ecology of many lake and river systems around the world. Trout and char are abundant in many regions, but most native species are on the decline. Some are classified as vulnerable, threatened, or endangered. Because of their widespread stocking in regions where they are not native, some trout and char also are the cause for threats to other native species. Loss of habitat, an expanding human population, and rapid climate change are challenging their future as streams warm and waters become more variable in their flows. This book examines trout and char from all these perspectives. Early chapters explore the unique diversity and life history aspects of trout and char and provide information on the taxonomy and systematics while also detailing some of unique life histories. New information is presented about species diversity and distributions by country. Summary chapters explore significant conservation and management challenges of broad interest to scientists, resource managers, anglers, and interested public. Trout and Char of the World end s with a series of essays exploring the future of trout and char over the next 50 years. Trout and Char of the World will be a primary resource for trout and char biologists, conservationists, and anglers in the many countries where trout and char are native or have been introduced, and a resource for anyone interested in learning more about the diversity and distribution of trout and char worldwide.--
Author : Bror Jonsson
Publisher : Springer Science & Business Media
ISBN 13 : 9400711891
Total Pages : 720 pages
Book Rating : 4.4/5 (7 download)
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer Science & Business Media. This book was released on 2011-05-03 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Gwendolyn A. Thunhorst
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (319 download)
Download or read book Wetland Planting Guide for the Northeastern United States written by Gwendolyn A. Thunhorst and published by . This book was released on 1993 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide provides current and available information (characteristics, appearance, wildlife benefits, and hydrology) for most of the trees, shrubs, herbaceous emergents, and submerged and floating aquatic vegetation that dominate the tidal and nontidal wetlands of the northeastern United States. It is organized to be of maximum utility to those individuals that are developing the designs (plans and specifications) for wetland construction, enhancement, and restoration projects.
Author : Robert R. Stickney
Publisher : John Wiley & Sons
ISBN 13 : 9780471131540
Total Pages : 412 pages
Book Rating : 4.1/5 (315 download)
Download or read book Aquaculture of the United States written by Robert R. Stickney and published by John Wiley & Sons. This book was released on 1996-01-12 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture in the United States is a significant agribusiness industry, but it is also a troubled one whose future is clouded by doubt. Many aquaculture practices, such as deliberately introducing exotic species, hatcheries programs, and pen culture in protected waters have come under intense attack from environmentalists. Economic pressures on the industry from the value of coastal land, the unavailability of suitable supplies of water, and the legal costs of regulations have restricted growth. This book looks at the past, present and future of a troubled industry.
Author : I. Chiu Liao
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (318 download)
Download or read book Aquaculture in Asia written by I. Chiu Liao and published by . This book was released on 1993 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. V. K. Sukhdeo
Publisher : Cambridge University Press
ISBN 13 : 9780521485425
Total Pages : 164 pages
Book Rating : 4.4/5 (854 download)
Download or read book Parasites and Behaviour written by M. V. K. Sukhdeo and published by Cambridge University Press. This book was released on 1994 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of Parasitology takes an in depth look at parasitic behaviour.
Author : J J Armistead
Publisher : Legare Street Press
ISBN 13 : 9781022207936
Total Pages : 0 pages
Book Rating : 4.2/5 (79 download)
Download or read book An Angler's Paradise and how to Obtain It written by J J Armistead and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive guide to angling covers everything from choosing the right equipment to finding the best fishing spots. J.J. Armistead provides helpful tips and tricks for both novice and experienced anglers, making this book the perfect companion for any fishing trip. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
