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  • nutrients  (2)
  • 1975-1979  (2)
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  • 1975-1979  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    The physical-chemical limnology of a desert reservoir (1977)
    Springer
    Hydrobiologia 53 (1977), S. 117-129 
    Details
    ISSN: 1573-5117
    Keywords: limnology ; desert reservoir ; water chemistry ; phytoplankton ; nutrients ; trace elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The physical-chemical limnology of a desert lake in central Arizona was investigated from February 1971–July 1973. The reservoir was found to be a warm-monomictic, eutrophic lake which exhibited pronounced thermal stratification during the summer months. Surface water temperatures ranged from a minimum of ca. 9 C in January to a maximum near 30 C in July–August. Chemically the lake may be described as a hard water lake of moderately high alkalinity and salinity. The concentration of the principal ions was affected significantly by precipitation run-off. The primary nutrients N and P were subject to considerable seasonal variability, being influenced most by precipitation and phytoplankton abundance. Trace element concentrations were low and showed comparatively little fluctuation during the study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00029290
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nutrient limitation of phytoplankton in a central Arizona reservoir (1976)
    Springer
    Hydrobiologia 51 (1976), S. 219-224 
    Details
    ISSN: 1573-5117
    Keywords: nutrients ; nutrient limitation ; phytoplankton ; phosphorus ; nitrogen ; carbon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The influence of added nutrients nitrogen, phosphorus and carbon on the phytoplankton of a small recreational reservoir in central Arizona was investigated during the summer, 1974. Polyethylene bags were used to isolate lake water and the natural populations for the addition of nitrogen, phosphorus and carbon individually and in combination. A large increase in phytoplankton numbers, extractable chlorophyll, pH and dissolved oxygen occurred only in bags to which both nitrogen and phosphorus were added, suggesting that both nitrogen and phosphorus levels were limiting to the primary producers. Little alteration in species composition resulted from the addition of the above nutrients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00005747
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    Paper (German National Licenses)
    Fulltext
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