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  • 1
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    Primary production and chlorophyll a in waters of the Kara Sea in September 2007
    PANGAEA
    In:  Supplement to: Mosharov, SA (2010): Distribution of the primary production and chlorophyll a in the Kara Sea in September of 2007. Translated from Okeanologiya, 2010, 50(6), 933-941, Oceanology, 50(6), 884-892, https://doi.org/10.1134/S0001437010060081
    Details
    Publication Date: 2023-05-12
    Description: These studies were performed from September 10 to 29, 2007 in the Kara Sea in transects westward of the Yamal Peninsula, near the St. Anna Trough, in the Ob River estuary (Obskay Guba), and on the adjacent shelf. Concentration of chlorophyll a in the euphotic layer varied from 0.02 to 4.37 µg/l, aver. 0.76 µg/l. Primary production in the water column varied from 10.9 to 148.0 mg C/m**2/day (aver. 56.9 mg C/m**2/day). It was shown that frontal zones divided the Kara Sea into distinct areas with different productivities. Maximum levels of primary production were measured in the deep part of the Yamal transect (132.4 mg C/m**2/day) and the shallow Kara Sea shelf near the Ob River estuary (74.9 mg C/m**2/day). Characteristics of these regions were low salinity of the surface water layer (19-25 psu) and elevated silicon concentration (12.8-28.1 µg-atom/l). It is explainable by river runoff. Frontal zones of the Yamal current within the Yamal and Ob transects showed high assimilation numbers reached to 2.32 and 1.49 mg C/mg Chl/hr, respectively; they were maximal for studied areas.
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4946; AMK54-4948; AMK54-4950; AMK54-4952; AMK54-4954; AMK54-4955; AMK54-4956; AMK54-4957; AMK54-4958; AMK54-4960; AMK54-4961; AMK54-4962; AMK54-4963; AMK54-4964; AMK54-4965; AMK54-4966; AMK54-4967; AMK54-4983; AMK54-4984; AMK54-4986; AMK54-4987; AMK54-4988; AMK54-4989; AMK54-4990; AMK54-4991; AMK54-4993; AMK54-4994; AMK54-4995; AMK54-4996; AMK54-4997; AMK54-4998; AMK54-4999; AMK54-5000; AMK54-5001; AMK54-5002; AMK54-5003; AMK54-5004; Archive of Ocean Data; ARCOD; Kara Sea; MULT; Multiple investigations; Obskaya Guba
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    (Table 1) Chlorophyll a distribution in the Kara Sea in September 2007
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4946; AMK54-4948; AMK54-4950; AMK54-4952; AMK54-4954; AMK54-4955; AMK54-4956; AMK54-4957; AMK54-4958; AMK54-4960; AMK54-4961; AMK54-4962; AMK54-4963; AMK54-4964; AMK54-4965; AMK54-4966; AMK54-4967; AMK54-4983; AMK54-4984; AMK54-4986; AMK54-4987; AMK54-4988; AMK54-4989; AMK54-4990; AMK54-4991; AMK54-4993; AMK54-4994; AMK54-4995; AMK54-4996; AMK54-4997; AMK54-4998; AMK54-4999; AMK54-5000; AMK54-5001; AMK54-5002; AMK54-5003; AMK54-5004; Archive of Ocean Data; ARCOD; Calculated; Chlorophyll a; Chlorophyll a, areal concentration; Date/Time of event; Depth of chlorophyll maximum; Elevation of event; Event label; Fluorometry; Kara Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Obskaya Guba; Ratio; Section
    Type: Dataset
    Format: text/tab-separated-values, 296 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    (Table 2a) Depth with 1% of photosynthetic active radiation in the Obskaya Guba and adjacent Kara Sea in the latest September 2007
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4993; AMK54-4996; AMK54-4997; AMK54-5000; AMK54-5001; AMK54-5003; Archive of Ocean Data; ARCOD; Date/Time of event; Depth with 1% of photosynthetic active radiation; Elevation of event; Event label; Kara Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Obskaya Guba; Photometry
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    (Table 2) Production characteristics of phytoplankton in the Kara Sea in September 2007
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 14C in-situ incubation; Akademik Mstislav Keldysh; AMK54; AMK54-4948; AMK54-4950; AMK54-4956; AMK54-4960; AMK54-4983; AMK54-4986; AMK54-4987; AMK54-4988; AMK54-4990; AMK54-4991; AMK54-4993; AMK54-4996; AMK54-4997; AMK54-5000; AMK54-5001; AMK54-5003; Archive of Ocean Data; ARCOD; Assimilation rate of carbon per chlorophyll a; Calculated; CTD, Sea-Bird; Date/Time of event; Elevation of event; Euphotic layer, thickness; Event label; Kara Sea; Latitude of event; Light attenuation meter; Longitude of event; Mixed layer depth; MULT; Multiple investigations; Obskaya Guba; Primary production, integrated; Primary production of carbon; Salinity; Section; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 144 data points
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    DATA PANGAEA
  • 5
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    Pigments, phytoplankton and its production parameters in the Obskaya Guba and adjacent Kara Sea in the latest September 2007 (2011)
    PANGAEA
    In:  Supplement to: Sukhanova, Irina N; Flint, Mikhail V; Mosharov, SA; Sergeeva, V M (2010): Structure of the phytoplankton communities and primary production in the Ob River estuary and over the adjacent Kara Sea shelf. Translated from Okeanologiya, 2010, 50(5), 785-800, Oceanology, 50(5), 743-758, https://doi.org/10.1134/S0001437010050115
    Details
    Publication Date: 2023-05-12
    Description: Material was collected in the Ob River estuary and the adjacent shallow Kara Sea shelf between 71°14.0'N and 75°33.0'N at the end of September 2007. Latitudinal zonation in phytoplankton distribution was demonstrated; this zonation was determined by changes in salinity and concentration of nutrients. Characteristic of the phytocenosis in the southern desalinated zone composed of freshwater diatom and green algae species were high population density (1500000 cells/l), biomass (210 ?g C/l), chlorophyll concentration (4.5 ?g/l), and uniform distribution in the water column. High primary production (~40 ?g C/l/day) was recorded in the upper 1.5 m layer. The estuarine frontal zone located to the north had a halocline at depth 3-5 m. Freshwater species with low abundance (250000 cells/l), biomass (24 ?g C/l), and chlorophyll concentration (1.5 ?g/l) dominated above the halocline. Marine diatom algae, dinoflagellates, and autotrophic flagellates formed a considerable part of the phytocenosis below the halocline; community characteristics were two-fold lower as compared with the upper layer. Maximal values of primary production (~10 ?g C/l/day) were recorded in the upper 1.5 m layer. The phytocenosis in the seaward zone was formed by marine alga species and was considerably poorer as compared with the frontal zone. Assimilation rates of carbon per chlorophyll a at the end of the vegetation season within the studied area were low, average 0.4-1.0 ?g C/?g Chl/hour in the upper layer and 0.03-0.1 ?g C/?g Chl/hour below the pycnocline.
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4993; AMK54-4994; AMK54-4995; AMK54-4996; AMK54-4997; AMK54-4998; AMK54-4999; AMK54-5000; AMK54-5001; AMK54-5002; AMK54-5003; AMK54-5004; Archive of Ocean Data; ARCOD; Kara Sea; MULT; Multiple investigations; Obskaya Guba
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 6
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    (Table 1) Abundance and biomass of diatom algae, dinofiagellates, green algae, and flagellates and their percentages in total phytoplankton abundance and biomass in the Obskaya Guba and adjacent Kara Sea in the latest September 2007 (2010)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4993; AMK54-4994; AMK54-4995; AMK54-4996; AMK54-4997; AMK54-4998; AMK54-4999; AMK54-5000; AMK54-5001; AMK54-5002; AMK54-5003; AMK54-5004; Archive of Ocean Data; ARCOD; Calculated; Date/Time of event; Depth, bottom/max; Depth, top/min; Diatoms; Diatoms, biomass as carbon; Dinoflagellates; Dinoflagellates, biomass as carbon; Elevation of event; Event label; Flagellates; Flagellates, biomass as carbon; Green algae; Green algae, biomass as carbon; Kara Sea; Latitude of event; Longitude of event; Microscopy; MULT; Multiple investigations; Obskaya Guba; Phytoplankton; Phytoplankton, biomass as carbon; PLANKTY program of biomass calculation from measured data
    Type: Dataset
    Format: text/tab-separated-values, 240 data points
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    DATA PANGAEA
  • 7
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    (Table 2b) Primary production, chlorophyll a concentration, assimilation rate of carbon per chlorophyll a, and ratio of phaeopigments to chlorophyll a in the Obskaya Guba and adjacent Kara Sea in the latest September 2007 (2010)
    PANGAEA
    Details
    Publication Date: 2024-03-18
    Keywords: 14C in-situ incubation; Akademik Mstislav Keldysh; AMK54; AMK54-4993; AMK54-4996; AMK54-4997; AMK54-5000; AMK54-5001; AMK54-5003; Archive of Ocean Data; ARCOD; Assimilation rate of carbon per chlorophyll a; Calculated; Chlorophyll a; Date/Time of event; DEPTH, water; Elevation of event; Event label; Fluorescence determination; Kara Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Obskaya Guba; Phaeopigments/chlorophyll a ratio; Primary production of carbon
    Type: Dataset
    Format: text/tab-separated-values, 84 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 8
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    (Table 4) Integrated biomass, chlorophyll a and phaeopigments contents, and primary production in the water column in the Obskaya Guba and adjacent Kara Sea in the latest September 2007 (2010)
    PANGAEA
    Details
    Publication Date: 2024-03-18
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4993; AMK54-4994; AMK54-4995; AMK54-4996; AMK54-4997; AMK54-4998; AMK54-4999; AMK54-5000; AMK54-5001; AMK54-5002; AMK54-5003; AMK54-5004; Archive of Ocean Data; ARCOD; Calculated; Chlorophyll a, areal concentration; Date/Time of event; Depth, bottom/max; Depth, top/min; Elevation of event; Event label; Kara Sea; Latitude of event; Longitude of event; MULT; Multiple investigations; Obskaya Guba; Phaeopigments, areal concentration; Phaeopigments/chlorophyll a ratio; Phytoplankton, biomass as carbon, integrated; Primary production of carbon per area, daily
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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