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  • 1
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    (Table 4) Mesozooplankton abundance and biomass and relative percentage of key zooplankton groups along the Bulgarian coast, Black Sea
    PANGAEA
    In:  Supplement to: Stel'makh, Lyudmila V; Babich, I I; Tugrul, Suleyman; Moncheva, Snejana; Stefanova, Kremena (2009): Phytoplankton growth rate and zooplankton grazing in the western part of the Black Sea in the autumn period. Translated from Okeanologiya, 2009, 49(1), 90-100, Oceanology, 49(1), 83-92, https://doi.org/10.1134/S000143700901010X
    Details
    Publication Date: 2023-05-12
    Description: Results of studies during Project of an international expedition onboard R/V Vladimir Parshin in September-October 2005 are presented. Intensive development of Bacillariophyceae and Dynophyceae was recorded in coastal waters of Bulgaria, Turkey, and in the Danube River delta during period of investigations. Increase in algae population was accompanied by rising of chlorophyll a concentration up to 2.0-5.5 µg/l. In the deep water region it did not exceed 0.5 µg/l. Phytoplankton growth rate in the surface water layer varied from 0.1 to 1.0 1/day. This parameter and NO2+NO3 concentration, as well as the silicon concentration were correlative, as was described by the Michaelis-Menten equation. Phytoplankton growth was affected by basic nutrients. Zooplankton grazing varied from 0.10 to 0.69 1/day and average values in different regions varied by 1.5 times. Microalgae size range is one of major factors of grazing regulation. Rate of phytoplankton consumption was decreasing with increasing the largest diatom Pseudosolenia calcar-avis impact on total biomass of nano- and microphytoplankton.
    Keywords: Archive of Ocean Data; ARCOD; Biomass determination using Chislenko nomograms; Black Sea; Calculated; Chaetognatha; Copepoda; Counting; Depth, bottom/max; Depth, top/min; DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; Meroplankton; Mesozooplankton; Mesozooplankton, biomass; Mesozooplankton, other groups; VP05-P1KR; VP05-P1VA; VP05-P3VA; VP05-P4KR; VP05-P4VA; VP05-P6KR; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 72 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Chlorophyll a concentration in plankton, biomass of different taxonomic phytoplankton groups, dominating algae species, and some parameters of coastal surface waters of the Black Sea
    PANGAEA
    In:  Supplement to: Stel'makh, Lyudmila V; Babich, I I (2003): Seasonal changes in the organic carbon to chlorophyll a ratio in the phytoplankton of the coastal Black Sea waters off Sevastopol. Translated from Okeanologiya, 2003, 43(6), 875-884, Oceanology, 43(6), 823-831
    Details
    Publication Date: 2023-05-12
    Description: Based on data obtained at three stations in coastal waters of the Black Sea off Sevastopol in 2000 and 2001, we present seasonal dynamics of the carbon to chlorophyll a ratio in nano- and microphy-toplankton. This parameter varied approximately tenfold throughout the year. Its maximum values (442-500) were obtained in summer (July), when Pyrrophyta dominated in phytoplankton. Minimum values (36-56) were observed in winter (December),when diatomaceous species predominated. We derive a regression relating the carbon to chlorophyll a ratio to proportion of Pyrrophyta in total phytoplankton biomass, doing so separately for warm and cold seasons. Regression equations demonstrate coupled action of irradiance, temperature, and nutrient availability on the carbon to chlorophyll a ratio. For Pyrrophyta phytoplankton assemblage R**2 = 0.95, and for diatomaceous one R**2 = 0.87.
    Keywords: Algae, biomass as carbon; Ammonium; Archive of Ocean Data; ARCOD; Black Sea; Carbon biomass estimation (unspec.); Chlorophyll a; Colorimetry; Date; Depth, bottom/max; Depth, top/min; DEPTH, water; Diatoms, biomass as carbon; Elevation of event; Event label; Latitude of event; Light intensity; Longitude of event; Microscopy; Nitrate; Phosphate; Photometry; Pyrophites, biomass as carbon; Sev-StBab-1; Sev-StBab-2; Sev-StBab-3; Species; Temperature, water; Thermometer; Time of day; Titration; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 437 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
    Electronic Resource
    Electronic Resource
    Dynamics of the sorption of hydrogen chloride and ammonia on the carboxyl group-containing fibre VION KN-1 (1988)
    Springer
    Fibre chemistry 19 (1988), S. 438-441 
    Details
    ISSN: 1573-8493
    Source: Springer Online Journal Archives 1860-2000
    Topics: Technology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Conclusions Using a dynamic assembly of the “Mikrogaz” type for the preparation of gas mixtures of known composition, the sorption of hydrogen chloride and of ammonia has been studied in the concentration range from 0.5 to 1000 mg/m3, under dynamic conditions on the nonwoven chemisorptive fibrous material VION, type KN-1. Regimes for the desorption of these materials and regeneration of the sorbent have been selected. The possibility of fine clean-up of gas discharges of hydrogen chloride and of ammonia on VION KN-1 has been demonstrated, plus the conditions for effecting it, as well as the possibility of using this material for mean shift and mean daily quantitative air sampling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00544931
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    Paper (German National Licenses)
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