Download or read book A Survey of the Fish Resources of the Great Bear River Northwest Territories 1974 written by R. A. (Robert Alan) Cameron and published by Fisheries and Marine Service [i.e. Department of Fisheries and Oceans]. This book was released on 1980 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Evaluation of the Fish Resources of the Mackenzie River Valley Based on 1974 Data written by C. S. Jessop and published by Department of the Environment, Fisheries and Marine Service, Fisheries Operation Directorate (Central Region), Resource Management Branch, Resource Impact Division. This book was released on 1975 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: In April 1974, the Department of the Environment, Fisheries and Marine Service began the final year of a four year investigation into possible effects of pipeline construction on fish resources of the Mackenzie River valley. The present program includes new and revised findings from the 1974 program. During 1974, emphasis was placed on refining and adding to life history data, particularly migration routes and timing, movements of fry and juveniles and location of overwintering areas. The fish tagging program was intensified on several systems in each study area. A fish fence was constructed in the Trail River to monitor fish movements and to obtain spawning population estimates. Fry traps were used to determine movements of fry and juveniles. A winter survey was conducted to locate significant overwintering areas. Pertinent information on species distribution and migration routes obtained by Fisheries and Marine Service crews based on Richards Island and the Great Bear River also has been incorporated.
Download or read book The Ecology of River Systems written by Bryan R. Davies and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our understanding of the ecology of running waters has come a long way during the past few years. From being a largely descriptive subject, with a few under tones concerned with such things as fisheries, pollution or control of blackflies, it has evolved into a discipline with hypotheses, such as the River Continuum Concept (Vannote et a/. 1980), and even a book suggesting that it offers opportunity for the testing of ecological theory (Barnes & Minshall 1983). However, perusal of the literature reveals that, although some of the very early studies were concerned with large rivers (references in Hynes 1970), the great mass of the work that has been done on running water has been on streams and small rivers, and information on larger rivers is either on such limited topics as fisheries or plankton, scattered among the journals, or not available to the general limnologist. The only exceptions are a few books in this series of publications, such as those on the Nile (Rz6ska 1976), the Volga (Morduckai Boltovskoi 1979) and the Amazon {Sioli 1984), and the recent compendium by Whitton (1984) on European rivers, among which there are a few that rate as large.
Download or read book Canadian Technical Report of Fisheries and Aquatic Sciences written by and published by . This book was released on 1988 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Papers of the University of Alaska written by and published by . This book was released on 1986 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 1983 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report Series CEN T written by Canada. Fisheries and Marine Service. Central Region and published by . This book was released on 1975 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monographiae Biologicae written by Keith F. Walker and published by . This book was released on 1957 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report Series Fisheries Operations Directorate Central Region written by Canada. Fisheries and Marine Service (Central Region). and published by . This book was released on 1975 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Fisheries Research Board of Canada written by Fisheries Research Board of Canada and published by . This book was released on 1979 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1975 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report written by and published by . This book was released on 1978 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1996 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Advances on Anadromous Fish in Arctic Alaska and Canada written by Robert H. Armstrong and published by . This book was released on 1986 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Historical Changes in Large River Fish Assemblages of the Americas written by John N. Rinne and published by . This book was released on 2005 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic changes have occurred in the functioning of larger rivers because of social values and policies, land use, inchannel causes, and alien species. These changes have resulted in the reduction in range and abundance of many native fish species. This book describes the historical changes observed in the fish assemblages of 27 large rivers in North, Central, and South America. A synthesizing chapter highlights common and distinct patterns among the rivers and their stressors. The book focuses on entire fish assemblages, including the many species that do not enter fisheries. It will be of interest to both fishery biologists and aquatic ecologists who are concerned with the status and trends in biodiversity and biointegrity. Contains historical information as well as new research and monitoring results, including research on metapopulations, genetics, and life history strategies.
Download or read book Technical Report Fisheries and Marine Service written by Canada. Fisheries and Marine Service and published by . This book was released on 1978 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
