Search Results - "KALCHEV, R. K"

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  1. 1

    Trophic relations in two lakes from the Bulgarian Black Sea coast and possibilities for their restoration by KALCHEV, R. K, PEHLLVANOV, L. Z, BESHKOVA, M. B

    Published in Water Science & Technology (01-01-2002)
    “…Based on quantitative data on nutrients, light penetration, phytoplankton, zooplankton and zoobenthos obtained in the period 1992-1994 the relations between…”
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    Conference Proceeding Journal Article
  2. 2

    Long-term eutrophication development in five coastal lakes of the bulgarian black sea region by Kalchev, R.K., Botev, I.S.

    Published in Water Science & Technology (01-01-1999)
    “…Referring to data for orthophosphate phosphorus and soluble inorganic nitrogen consisting of NO 3 1− and NH 4 1+ ions, an attempt was made to estimate the…”
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    Journal Article Conference Proceeding
  3. 3

    Some allometric and non-allometric relationships between chlorophyll-a and abundance variables of phytoplankton by KALCHEV, R. K, BESHKOVA, M. B, BOUMBAROVA, C. S, TSVETKOVA, R. L, SAIS, D

    Published in Hydrobiologia (01-12-1996)
    “…Samples collected from Iskar, Koprinka and Pchelina reservoirs collected between 1986 and 1991 were analysed for phytoplankton composition, average individual…”
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    Journal Article
  4. 4

    Long-term eutrophication development in five coastal lakes of the Bulgarian black sea region by Kalchev, R. K., Botev, I. S.

    Published in Water science and technology (01-04-1999)
    “…Referring to data for orthophosphate phosphorus and soluble inorganic nitrogen consisting of NO31− and NH41+ ions, an attempt was made to estimate the trophic…”
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    Journal Article