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  • 1
    Electronic Resource
    Electronic Resource
    Book reviews (1987)
    Springer
    Environmental management 11 (1987), S. 129-140 
    Details
    ISSN: 1432-1009
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01867189
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  • 2
    Electronic Resource
    Electronic Resource
    Book reviews (1982)
    Springer
    Environmental management 6 (1982), S. 361-366 
    Details
    ISSN: 1432-1009
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01875069
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative effects of sediment and water contamination on benthic invertebrates in four lakes (1979)
    Springer
    Bulletin of environmental contamination and toxicology 23 (1979), S. 840-847 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01770052
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  • 4
    Electronic Resource
    Electronic Resource
    Distribution and transport of heavy metals in the sediments of a small Northern Eutrophic lake (1980)
    Springer
    Bulletin of environmental contamination and toxicology 24 (1980), S. 828-833 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01608197
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  • 5
    Electronic Resource
    Electronic Resource
    Seasonal and species-dependent variability in the biological impact of mine wastes in an Alpine River (1980)
    Springer
    Bulletin of environmental contamination and toxicology 25 (1980), S. 524-529 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985566
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of water movements and other factors on distribution and transport of heavy metals in a shallow Bay (Canada) (1981)
    Springer
    Archives of environmental contamination and toxicology 10 (1981), S. 715-724 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Concentrations of heavy metals and cyanide in water and sediments were determined from December 1974 to February 1976 in Yellowknife Bay situated in northern Canada. The bay receives a continuous discharge of liquid waste effluents from an operating gold mine. Arsenic reached a maximum concentration of 3100 mg kg−1 in sediments near the waste source and decreased to a minimum of 〈12 mg kg−1 moving away from this area; corresponding ranges for Pb, Cu, Zn, Hg, and Fe were 13–800 mg kg−1, 45–785 mg kg−1, 23–935 mg kg−1, 35–505 mg kg−1 and 1.9–6.3% respectively. Although most pollutants were recorded at low levels in the water, arsenic and copper rose to 0.75 and 0.29 mg L−1 coincident with maximum discharge from the waste source. Overall, water movement (generated by inflowing rivers and wind) was the most important factor governing the distribution of metals in the bay. Although surrounding islands also restricted the movement of pollutants through the bay, water depth, slope of the bottom and organic content of the substrate did not have a measurable impact on concentrations in sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01054855
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  • 7
    Electronic Resource
    Electronic Resource
    Factors influencing algal consumption and feeding rate in Heterotrissocladius changi Saether and Polypedilum nebeculosum (Meigen) (Chironomidae: Diptera) (1979)
    Springer
    Oecologia 40 (1979), S. 219-227 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Factors influencing the consumption of algae and the rate of feeding by the larvae of Heterotrissocladius changi Saether and Polypedilum nebeculosum (Meigen) (Chironomidae: Diptera) were determined from collections made between July 1975 and May 1977 in Yellowknife Bay, situated in the Canadian subarctic. Although both species fed heavily on algae during the summer, few cells were ingested in the winter, coincident with an overall reduction in feeding intensity. H. changi fed primarily on benthic species (Achnanthes minutissima, Achnanthes pinnata, Fragilaria pinnata, Fragilaria vaucheriae, Navicula spp., Scenedesmus spp.) Whereas P. nebeculosum was restricted to planktonic forms (Dinobryon spp., Scenedesmus spp.). The consumption of algae by H. changi depended largely on the density of the microflora in the environment. This factor had little influence on P. nebeculosum and was replaced by size selection, which prevented the ingestion of many planktonic algal species. The importance of algae to both chironomids also depended on the susceptability of certain algal forms to digestion. Temperature generally regulated the intensity of feeding of both H. changi and P. nebeculosum. However, changing day-length initiated heavy feeding during April and May, despite low water temperatures. The depth of water and the organic content of the substrate had no detectable effect on the amount of material in the guts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00347939
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  • 8
    Electronic Resource
    Electronic Resource
    Some factors effecting algal densities in a eutrophic farmland stream (1977)
    Springer
    Oecologia 29 (1977), S. 257-267 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Population dynamics of attached algae in a eutrophic farmland stream (Wellow Brook, England) were correlated through multiple regression analyses with changes in 7 physico-chemical parameters (temperature, light, water velocity, pH, NO3−N, P2O5−P, SiO2−Si). Samples were taken every 2 weeks for 25 consecutive months between June 1973 and June 1975. The relative significance of the 7 parameters in controlling densities varied widely depending on species. Overall light was most important, accounting for 28 and 17% of density changes in the epipelon and epilithon respectively. While winter flooding caused a sharp reduction in the density of these 2 communities, the concentration of P2O5−P and NO3−N and pH usually had little effect on numbers. The 7 parameters did not exert major control over the epiphyton, normally accounting for 〈30% of densities variation. Grazing by the protozoan Frontonia acuminata may have significantly reduced the density of the epipelon for 2 months during the spring but otherwise was of no importance to any community.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345700
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  • 9
    Electronic Resource
    Electronic Resource
    Importance of algae in the diet of the oligochaetes Lumbriculus variegatus (MÜller) and Rhyacodrilus sodalis (Eisen) (1978)
    Springer
    Oecologia 35 (1978), S. 357-363 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The importance of algae in the diet of the oligochaetes Lumbriculus variegatus and Rhyacodrilus sodalis was determined from cellections made in a eutrophic bay from April 1977 to April 1978. During the summer, algae represented 70–85% of the gut contents of both species. The most frequently ingested algae were Cymatopleura elliptica, Cymbella spp., Epithemia turgida, Pinnularia spp., and Synedra ulna. Almost all species were consumed in proportion to their abundance in the environment. However, Nostoc pruniforme and Nostoc verrucosum were not eaten due to size selection. The high level of algal consumption exhibited by the oligochaetes was primarily related to the large standing crop of algae on the sediments. During the winter, when algal densities were low in the environment, detritus and associated bacteria were the major food source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345142
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  • 10
    Electronic Resource
    Electronic Resource
    Distribution of heavy metals and radionuclides in sediments, water, and fish in an area of Great Bear Lake contaminated with mine wastes (1981)
    Springer
    Archives of environmental contamination and toxicology 10 (1981), S. 329-338 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The concentrations of heavy metals and radionuclides in the sediments and water of Great Bear Lake were determined during 1978 near an operating silver mine and an abandoned uranium mine. Additional information on the level of mercury in fish tissues were also collected. The mines, situated on the same site, deposited tailings and other waste material directly into the lake. The concentrations of mercury, lead, manganese, and nickel in the sediments were highest near the tailings deposit and decreased significantly as the distance from the mine increased. Although there were also significant positive correlations between these metals and the organic content of the sediments, water depth and slope of the bottom had no impact on metal distribution. Since the concentrations of arsenic, cobalt, copper,226radium,210lead and230thorium varied inconsistently throughout the study area, the distribution of these substances could not be related to any of the environmental factors that were measured. There were, however, significant negative correlations between the concentrations of232thorium and228thorium and distance from the mine and organic content of the sediments. Heavy metal and radionuclide levels in water were generally below detectable limits, reflecting the strong chemical bonding characteristics of the sediments. The low concentrations of mercury in the tissues of lake troutSalvelinus namaycush were probably related to low uptake rates and the ability of this species to move into uncontaminated areas of the lake.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01055634
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