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Author : Thomas D. Wright
Release : 1982
Genre : Biology
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Potential Biological Impacts of Navigation Traffic by : Thomas D. Wright
Download or read book Potential Biological Impacts of Navigation Traffic written by Thomas D. Wright. This book was released on 1982. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Release : 1990
Genre :
Kind : eBook
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Book Synopsis TRAFFIC: An Information Retrieval System to Evaluate the Environmental Impacts of Commercial Navigation Traffic by :
Download or read book TRAFFIC: An Information Retrieval System to Evaluate the Environmental Impacts of Commercial Navigation Traffic written by . This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt: The software system, TRAFFIC, was developed to provide technical information and literature on the physical effects of navigation traffic, particularly on selected riverine organisms. The TRAFFIC software program has been designed to run on an IBM-PR or compatible microcomputer with a minimum of 256 K of computer memory and type of video card and monitor. TRAFFIC is easy to use and requires no knowledge of computers. Depending upon the program selections made by the user, either a bibliographic listing or a technical discussion of the effects of a physical navigation system on a selected riverine organism can be obtained. The results can be read directly from the computer monitor or output to an IBM or Epson compatible printer. This programs considers the environmental impact of water waves, suspended sediments, turbulent flow and erosion of banks caused by the traffic.
Author : William D. Pearson
Release : 1989
Genre :
Kind : eBook
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Book Synopsis Environmental Impact Research Program: Environmental Effects of Navigation Traffic: Studies on Fish Eggs and Larvae by : William D. Pearson
Download or read book Environmental Impact Research Program: Environmental Effects of Navigation Traffic: Studies on Fish Eggs and Larvae written by William D. Pearson. This book was released on 1989. Available in PDF, EPUB and Kindle. Book excerpt: Adult and juvenile fishes are usually capable of detecting and avoiding or withstanding most of the environmental effects of navigation traffic. However, since larval fishes are less capable of avoidance movements and more susceptible to environmental disturbances, they can be negatively affected by navigation traffic. Reported direct effects of traffic on larval fishes include turbulence, shear forces, currents, hull and propeller impacts, abrasion, wave and drawdown effects, and resuspension of sediments. Indirect effects of navigation traffic include releases of fuel, oils, exhaust gases, and other wastes associated with the operation of each tow; the construction and operation of more or larger lock and dam facilities needed for increased traffic; and the greater risk of catastrophic spills of toxic materials. Laboratory experiments were designed to investigate the effects of selected disturbances (turbulence, resuspension of sediment, and atmospheric exposure) on four species of larval fishes: paddlefish, channel catfish, grass carp, and common carp. Keywords: Commercial navigation traffic; Environmental impact; Laboratory simulation; Shipping; Physical effects studies. (kt).
Author :
Release : 1982
Genre : Canals
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Final Supplement to the Environmental Impact Statement by :
Download or read book Final Supplement to the Environmental Impact Statement written by . This book was released on 1982. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Barry S. Payne
Release : 1987
Genre : Freshwater mussels
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Environmental Effects of Navigation Traffic by : Barry S. Payne
Download or read book Environmental Effects of Navigation Traffic written by Barry S. Payne. This book was released on 1987. Available in PDF, EPUB and Kindle. Book excerpt: Navigation traffic can intermittently increase turbulence and suspended solids in rivers. Freshwater mussels are essentially sessile filter-feeders and could be susceptible to physiological disruption as a result of exposure to these potential effects of navigation traffic. In laboratory studies, cyclic increases in water velocity and turbulence at a level and frequency that can be caused by routine navigation traffic led to reduced feeding rates and slightly increased reliance on endogenous and nonproteinaceous energy reserves. However, continuous or near-continuous disruption, such as might be associated with barge fleeting activities, led to virtually complete reliance on endogenous energy reserves. These results suggest that proposed areas of barge fleeting be evaluated on a site-specific basic to ensure that important mussel populations are not situated in nearby habitats that will be exposed to sustained periods of turbulence and suspended solids above ambient conditions. In addition, these laboratory studies confirm the utility of sublethal physiological indices of stress, such as oxygen: nitrogen and flesh: shell mass ratios, in field studies aimed at monitoring environmental impacts on natural mussel populations. Keywords: Environmental impact; Aquatic biology.
