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  • Springer  (16)
  • 1980-1984  (16)
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Keywords
Publisher
Years
Year
  • 1
    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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  • 2
    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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  • 3
    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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  • 4
    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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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    Factors influencing the species composition, distribution and abundance of benthic invertebrates in the profundal zone of a eutrophic northern lake (1981)
    Springer
    Hydrobiologia 83 (1981), S. 505-510 
    Details
    ISSN: 1573-5117
    Keywords: benthos ; food ; oxygen ; algae ; subarctic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Factors influencing the species composition, distribution and abundance of benthic invertebrates were determined in a eutrophic subarctic lake from April 1978 to April 1979. Collections were made at five stations located at depths of 4 to 13 m. The largest populations of up to 5 × 103 animals m−2 were found in the deepest part of the lake. of the 24 species recorded in this area, the chironomidsProcladius denticulatus, Dicrotendipes modestus, Chironomus decorus andGlyptotendipes barbipes were most common. The strong development of benthos in the profundal zone was attributed to a consistently large supply of food and warm (4 °C) winter temperatures on bottom. Slightly smaller populations (up to 4 × 103 animals, m−2), composed of 19–23 species, occurred in shallower water, a reflection of lower (1.5 °C) winter temperatures. In the anoxic northern part of the lake, only 4–8 species were found in low numbers (400–1 000 animals m−2). This was likely due to low (〈5% saturation) oxygen levels in water and high organic content (18.5%) of the sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187047
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  • 7
    Electronic Resource
    Electronic Resource
    Zooplankton, and related phytoplankton cycles, in a eutrophic lake (1980)
    Springer
    Hydrobiologia 74 (1980), S. 99-104 
    Details
    ISSN: 1573-5117
    Keywords: algae ; cladocerans ; food ; predators ; rotifers ; temperature ; zooplankton
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The seasonal cycles of zooplankton were determined for 18 consecutive months in a sewage-enriched lake in northern Canada and were related to algal availability and utilization, food consumption, temperature and the density of predators. Most of the common species (Daphnia pulex, Daphnia middenorffiana, Keratella cochlearis, Keratella quadrata, Polyarthra vulgaris) increased in abundance in May and June, reached a mid-summer maximum, and declined sharply in the fall. Phytoplankton densities increased sharply in May, peaked early in June and gradually decreased through the summer and fall. Since the quantity of algae in the guts remained constant during this period, algal availability and utilization had no direct impact on the seasonal cycles of any species. Furthermore, the amount of ingested material in D. pulex and D. middendorffiana was similar regardless of time of year, implying that the total quantity of food in the environment did not restrict development. Although temperature was the most important factor influencing variations in the densities of all species, predation by Cyclops spp. probably had little effect on the population dynamics of the fauna.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00014560
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  • 8
    Electronic Resource
    Electronic Resource
    Inter-species variability in the consumption of algae by oligochaetes (1981)
    Springer
    Hydrobiologia 83 (1981), S. 241-244 
    Details
    ISSN: 1573-5117
    Keywords: algae ; food ; oligochaetes ; subarctic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The importance of algae in the diet of the oligochaetesArcteonais lomondi, Uncinais uncinata andLimnodrilus claparedeianus was determined from May 1978 to April 1979 in two lakes located in northern Canada. The lakes were small (130–157 ha), shallow, (〈15 m) and mesotrophic. During summer, algae accounted for up to 57–75% by volume of ingested matter inA. lomondi andU. uncinata depending on lake whereas in winter the corresponding range was 10–22%. Dominant algae found in the gut included the diatomsSurirella robusta, Diploneis puella, Amphora ovalis, Stephanodiscus astraea, Fragilaria construens andAchnanthes minutissima. Although the same taxa were ingested byL. claparedeianus, algae always represented 〈5% by volume of the gut contents. This possibly reflects subsurface feeding in an area where algae were rare. The length distribution of ingested diatoms, ranging from 9 to 250 μm, was similar regardless of species in both lakes. Hence, there was no partitioning of algal food resources among oligochaetes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00008272
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  • 9
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    Influence of water movements and other factors on distribution and transport of heavy metals in a shallow Bay (Canada) (1981)
    Springer
    Details
    Publication Date: 1981-11-01
    Print ISSN: 0090-4341
    Electronic ISSN: 1432-0703
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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  • 10
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    Distribution of heavy metals and radionuclides in sediments, water, and fish in an area of Great Bear Lake contaminated with mine wastes (1981)
    Springer
    Details
    Publication Date: 1981-01-01
    Print ISSN: 0090-4341
    Electronic ISSN: 1432-0703
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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