Download or read book Ecological Studies of Aquatic Systems in the Mackenzie Porcupine Drainages in Relation to Proposed Pipeline and Highway Developments written by G. J. Brunskill and published by . This book was released on 1973 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Studies of Aquatic Systems in the Mackenzie Porcupine Drainages in Relation to Proposed Pipeline and Highway Developments written by and published by . This book was released on 1973 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canada 3 v written by United States. Bureau of Land Management and published by . This book was released on 1975 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Alaska Natural Gas Transportation System Canada 3 v written by United States. EIS Task Force and published by . This book was released on 1975 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alaska Natural Gas Transportation System written by United States. EIS Task Force and published by . This book was released on 1976 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alaska Natural Gas Transportation System written by United States. Bureau of Land Management and published by . This book was released on 1976 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Garrison Diversion Unit Missouri River Basin Project ND SD written by and published by . This book was released on 1974 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report Fisheries Marine Service Research and Development Directorate written by and published by . This book was released on 1976 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of Foreign Government Environmental Reports written by and published by . This book was released on 1976 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alaska Natural Gas Transportation System written by and published by . This book was released on 1976 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mackenzie Valley Pipeline Assessment written by Canada. Pipeline Application Assessment Group and published by Indian Affairs and Northern Development. This book was released on 1974 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A World of Rivers written by Ellen Wohl and published by University of Chicago Press. This book was released on 2010-11-15 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Far from being the serene, natural streams of yore, modern rivers have been diverted, dammed, dumped in, and dried up, all in efforts to harness their power for human needs. But these rivers have also undergone environmental change. The old adage says you can’t step in the same river twice, and Ellen Wohl would agree—natural and synthetic change are so rapid on the world’s great waterways that rivers are transforming and disappearing right before our eyes. A World of Rivers explores the confluence of human and environmental change on ten of the great rivers of the world. Ranging from the Murray-Darling in Australia and the Yellow River in China to Central Europe’s Danube and the United States’ Mississippi, the book journeys down the most important rivers in all corners of the globe. Wohl shows us how pollution, such as in the Ganges and in the Ob of Siberia, has affected biodiversity in the water. But rivers are also resilient, and Wohl stresses the importance of conservation and restoration to help reverse the effects of human carelessness and hubris. What all these diverse rivers share is a critical role in shaping surrounding landscapes and biological communities, and Wohl’s book ultimately makes a strong case for the need to steward positive change in the world’s great rivers.

Download or read book Studies to Determine the Impact of Gas Pipeline Development on Aquatic Ecosystems written by Aquatic Environments Limited and published by [Calgary] : Canadian Arctic Gas Study ; [Anchorage?] : Alaskan Arctic Gas Study Company. This book was released on 1977 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Ephemeroptera Biology written by John F. Flannagan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by and published by . This book was released on 1974 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Toolik Lake written by James J. O'Brien and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The limnological study of Toolik Lake began in the Summer of 1975. This research was an outgrowth of the arctic IBP project which had focused mainly on small Arctic pond ecosystems on the Alaskan Arctic coastal plain. It was thought desirable to study larger, deeper lakes which contained fish to further generalizations developed during the IBP study. Initial research on Toolik Lake and the surrounding lakes and ponds focused on process studies such as annual primary productivity of the lake or the vertical migration patterns of the resident zooplankton. In 1983 the philosophy of the research changed with the funding of a more integrated programme. The fundamental question posed was whether Arctic lake and stream ecosystems are regulated from the bottom up by nutrient availability or from the top down by the density and activity of top predators. In 1987 the Toolik Lake area was designated an LTER (Long-Term Ecological Research) site, one of 18 such sites throughout the United States, Puerto Rico and the Antarctic. The research theme for the Arctic LTER also focuses on the regulation of Arctic ecosystems, whether regulation comes from the top down or bottom up. The Arctic LTER also incorporates a terrestrial component as well as a lake and stream component.