Aquatics task force on environmental assessment of the Atikokn Power Plant: effects on aquatic organisms
Description
Possible impacts of an 800-MW coal-fired power plant to be built near Atikokan, Ontario were evaluated. It is feared that the emissions of SO/sub 2/ will lead to the deposition of sulfuric acid and result in the acidification of freshwaters in nearby parks and wilderness areas. The most obvious biological effects of acidification are damages to populations of fish. Less conspicuous but no less severe damages also occur to other organisms. It appears that all trophic levels are affected: species numbers are reduced, biomasses are altered, and primary production and decomposition are impaired. Field experiments and laboratory experiments indicate that … continued below
Physical Description
19 pages
Creation Information
Hendrey, G.R. November 1, 1978.
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Brookhaven National Laboratory
Place of Publication: Upton, New York
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Description
Possible impacts of an 800-MW coal-fired power plant to be built near Atikokan, Ontario were evaluated. It is feared that the emissions of SO/sub 2/ will lead to the deposition of sulfuric acid and result in the acidification of freshwaters in nearby parks and wilderness areas. The most obvious biological effects of acidification are damages to populations of fish. Less conspicuous but no less severe damages also occur to other organisms. It appears that all trophic levels are affected: species numbers are reduced, biomasses are altered, and primary production and decomposition are impaired. Field experiments and laboratory experiments indicate that microbial activity is reduced and that the recycling of materials is greatly impeded at low pH. This may interfere with nutrient supplies to plants and decrease the microbial biomass available to higher trophic levels. Phytoplankton densities decrease in acidified lakes and there is a reduction in some species of macrophytes. On the other hand, Sphagnum and benthic filamentous algae greatly increase in acidified conditions. The total primary productivity of lakes and streams may actually increase because of such dense growths on the bottom. Zooplankton and benthic invertebrate communities become less complex as acidity increases. This may in part be due to reduced food supplies, but direct inhibition by H/sub 2/SO/sub 4/ has also been demonstrated. This removal of fish food organisms may exacerbate damage to fisheries, especially in the pH range of 5 to 6. When a lake loses all fish because of low pH, a few species of invertebrates may become very abundant. The salamanders Ambystoma jeffersonium and A. maculatum, sensitive to acidity below pH 7.0 and 5.0 respectively, are being eliminated from small ponds or temporary pools in the region around Ithaca, NY because of the impact of acid precipitation. Species of frogs in some lakes are also being eliminated because of acidification. (ERB)
Physical Description
19 pages
Notes
Dep. NTIS, PC A02/MF A01.
Subjects
Keywords
- Acid Rain
- Acidification
- Air Pollution
- Amphibians
- Animals
- Aquatic Organisms
- Atmospheric Precipitations
- Bacteria
- Benthos
- Biological Effects
- Canada
- Chalcogenides
- Chemical Effluents
- Chemical Reactions
- Data
- Data Compilation
- Data Forms
- Deposition
- Earth Atmosphere
- Environmental Impacts
- Environmental Transport
- Fishes
- Fossil-Fuel Power Plants
- Fresh Water
- Frogs
- Hydrogen Compounds
- Information
- Inorganic Acids
- Invertebrates
- Isolated Values
- Management
- Mass Transfer
- Microorganisms
- Nature Reserves
- North America
- Numerical Data
- Ontario
- Oxides
- Oxygen Compounds
- Ph Value
- Plankton
- Plants
- Pollution
- Population Dynamics
- Power Plants
- Productivity
- Rain
- Recreational Areas
- Resources
- Salamanders
- Species Diversity
- Stack Disposal
- Sulfur Compounds
- Sulfur Dioxide
- Sulfur Oxides
- Sulfuric Acid
- Surface Waters
- Thermal Power Plants
- Vertebrates
- Waste Disposal
- Waste Management
- Water 560300* -- Chemicals Metabolism & Toxicology
- Water Pollution
STI Subject Categories
- 20 Fossil-Fueled Power Plants
- 200200 -- Fossil-Fueled Power Plants-- Waste Management
- 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
- 520200 -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)
- 54 Environmental Sciences
- 63 Radiation, Thermal, And Other Environ. Pollutant Effects On Living Orgs. And Biol. Mat.
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- Report No.: BNL-50932
- Grant Number: EY-76-C-02-0016
- Digital Object Identifier: https://doi.org/10.2172/6054057
- Office of Scientific & Technical Information Report Number: 6054057
- Archival Resource Key: ark:/67531/metadc1105816
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Creation Date
- November 1, 1978
Added to The UNT Digital Library
- Feb. 22, 2018, 7:45 p.m.
Description Last Updated
- Aug. 2, 2019, 12:42 p.m.
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Hendrey, G.R. Aquatics task force on environmental assessment of the Atikokn Power Plant: effects on aquatic organisms, report, November 1, 1978; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1105816/: accessed May 9, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.