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  • 1
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    Zooplankton collected in the ice covered Chupa Inlet (White Sea) on 6-7 April 2002
    PANGAEA
    In:  Supplement to: Kosobokova, Ksenia N; Ratkova, Tatyana N; Sazhin, Andrey F (2003): Zooplankton in the ice-covered Chupa Inlet (White Sea) in the early spring of 2002. Translated from Okeanologiya, 2003, 43(5), 734-743, Oceanology, 43(5), 694-703
    Details
    Publication Date: 2023-05-12
    Description: Size-, species- and age composition of zooplankton was studied in the ice-covered Chupa Inlet (White Sea, Kandalksha Bay) in early April 2002. The species composition of zooplankton was poor and typical for the end of the winter season, and abundance and biomass were considerably lower than in summer. In terms of biomass two species of copepods (Calanus glacialis and Pseudocalanus minutus) prevailed. Both species were already feeding on ice algae available and began to reproduce. Such early reproduction of Calanus glacialis was noted in the White Sea for the first time. Obtained results show that secondary production in the White Sea starts well before thawing of the ice cover.
    Keywords: Archive of Ocean Data; ARCOD; Chupa-2002-1; Chupa-2002-2; MULT; Multiple investigations; White Sea
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 2
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    Contribution of different algae groups to their total biomass and infusoria biomass in under ice water (2004)
    PANGAEA
    In:  Supplement to: Ratkova, Tatyana N; Sazhin, Andrey F; Kosobokova, Ksenia N (2004): Unicellular inhabitants of the White Sea underice pelagic zone during the early spring period. Translated from Okeanologiya, 2004, 44(2), 259-266, Oceanology, 44(2), 240-246
    Details
    Publication Date: 2023-07-09
    Description: Samples of under ice water were collected at 4 stations not far from the White Sea Biological Station of the Zoological Institute RAS (Chupa Inlet, Kandalaksha Bay) in April 2002. For the first time it was shown that in winter numerous phototrophic and heterotrophic flagellates together with diatoms inhabited water column under sea ice. Abundance and biomass of these small algae was comparable with similar summer data. Biomass of algae in 2-40 m layer in early April 2002 exceeded 300 mg C/m**2, increasing up to 0.69-2.9 g C/m**3 just under ice. Sinking of the algae was insignificant, may be due to active grazing in the thin upper layer of the water column. High abundance of heterotrophic flagellates and dinoflagellates may indicate importance of the microbial food chain. From obtained data it may be concluded that the vegetation season, as well as the season of high activity of nano- and microheterotrophs starts in the White Sea far earlier, than it was supposed before.
    Keywords: Algae, biomass as carbon; Archive of Ocean Data; ARCOD; Calculated; Calculated from cell volumes and abundance; Chupa-2002-1; Chupa-2002-2; Chupa-2002-3; Chupa-2002-4; Date/Time of event; DEPTH, water; Diatoms, biomass as carbon; Elevation of event; Event label; Flagellates, biomass as carbon; Infusoria, biomass as carbon; Latitude of event; Longitude of event; MULT; Multiple investigations; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 65 data points
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  • 3
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    (Table 4a) Biomass of different groups of auto- and heterotrophic protozoans in the lower layer of sea ice at Stations Chupa-2002-1 and Chupa-2002-2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Archive of Ocean Data; ARCOD; Calculated from wet weight/volume; Chupa-2002-1; Chupa-2002-2; Ciliates, biomass as carbon; Date/Time of event; Diatoms, biomass as carbon; Elevation of event; Event label; Flagellates, heterotrophic, biomass as carbon; Flagellates, phototrophic, biomass as carbon; Latitude of event; Longitude of event; Microplankton, biomass as carbon; MULT; Multiple investigations; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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  • 4
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    (Table 4b) Biomass of different groups of auto- and heterotrophic protozoans in the water column at Stations Chupa-2002-1 and Chupa-2002-2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: Archive of Ocean Data; ARCOD; Calculated from wet weight/volume; Chupa-2002-1; Chupa-2002-2; Ciliates, biomass as carbon; Date/Time of event; DEPTH, water; Diatoms, biomass as carbon; Elevation of event; Event label; Flagellates, heterotrophic, biomass as carbon; Flagellates, phototrophic, biomass as carbon; Latitude of event; Longitude of event; Microplankton, biomass as carbon; MULT; Multiple investigations; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 48 data points
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  • 5
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    Contribution of different algae groups in their total biomass and biomass of Infusoria and Nematoda (2004)
    PANGAEA
    In:  Supplement to: Sazhin, Andrey F; Ratkova, Tatyana N; Kosobokova, Ksenia N (2004): Inhabitants of the White Sea coastal ice during the early spring period. Translated from Okeanologiya, 2004, 44(1), 92-100, Oceanology, 44(1), 82-89
    Details
    Publication Date: 2023-07-09
    Description: In April 2002 at four stations located in the vicinity of the White Sea Biological Station, Zoological Institute, Russian Academy of Sciences (Chupa Inlet, Kandalaksha Bay) ice samples were taken. It was shown that phototrophic and heterotrophic flagellates inhabit White Sea ice together with diatoms and dinoflagellates. In addition to three well-known communities, namely, assemblages of the lower ice surface, assemblages of pore channels, and interstitial communities, an infiltration assemblage and that of melt ice pools not described for the White Sea before were found in the White Sea ice. Biomass of ice algae varied from 130 to 1400 mg C/m**2. Maximum biomass was observed in the lower part of ice (from 2.5 to 36 g C/m**3 or 50-720 mg C within the lower 2-4 cm layer). It is shown that beginning of spring algal growth in the White Sea should be related not to the period of release of the sea from ice and subsequent water warming, but to the period of ice melting at the sea-ice interface and, correspondingly, to increase in its illumination. Sea-ice algae entering water from ice long before beginning of spring ''bloom'' of typical pelagic phytoplankton are grazed by planktonic heterotrophs directly under sea ice and serve at this period as a basis for the pelagic food chain.
    Keywords: Algae, biomass as carbon; Archive of Ocean Data; ARCOD; Calculated; Carbon biomass estimation (unspec.); Chupa-2002-1; Chupa-2002-2; Chupa-2002-3; Chupa-2002-4; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Diatoms, biomass as carbon; Elevation of event; Event label; Flagellates, biomass as carbon; Infusoria, biomass as carbon; Latitude of event; Longitude of event; MULT; Multiple investigations; Nematoda, biomass as carbon; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 96 data points
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  • 6
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    Biomass of the most abundant taxons and phytoplankton groups in the Keret' River estuary (White Sea) in September 2000 (2002)
    PANGAEA
    In:  Supplement to: Dolotov, Yury S; Kovalenko, V N; Lifshits, V Kh; Petrov, M P; Platonov, A V; Prego, Ricardo; Ratkova, Tatyana N; Filatov, N N; Shevchenko, Vladimir P (2002): On the dynamics of water and suspension in the Keret' River estuary (Karelian coast of the White Sea). Translated from Okeanologiya, 2002, 42(5), 765-774, Oceanology, 42(5), 731-740
    Details
    Publication Date: 2023-07-09
    Description: In September 2000 we carried out a comprehensive study of dynamics of water and suspension in the area south of the Chupa Bay adjacent to the Keret' Archipelago and the estuary of the Keret' River (Karelian coast of the White Sea) onboard R/V Ekolog. The entire study area can be divided into three estuary zones characterized by different dynamic regimes: marine, intermediate, and near-mouth zones. Autumn stratification of the water column is particularly distinct in the most dynamic marine zone. The strongest mixing of the upper layer is also observed in the marine zone. The most intensive dilution and the largest thickness of the diluted water layer are found in the near-mouth zone. On the whole in the near-mouth zone concentration of suspended matter is higher than in the intermediate and marine zones. The highest phytoplankton abundance is observed in the marine zone, whereas the lowest one is confined to the near-mouth zone. At all the stations both abundance and biomass of flagellates dominate.
    Keywords: Archive of Ocean Data; ARCOD; Chaetoceros socialis, biomass as carbon, integrated; Choanoflagellates, biomass as carbon, integrated; Chrysomonadina, biomass as carbon, integrated; Depth, bottom/max; Depth, top/min; DEPTH, water; Diatoms, biomass as carbon, integrated; Dinoflagellates, biomass as carbon, integrated; Ek-00-01; Ek-00-05; Ek-00-06; Ek-00-29; Ek-00-B-1; Ek-00-B-2; Euglenophyta, biomass as carbon, integrated; Event label; Flagellates indeterminata, biomass as carbon, integrated; Latitude of event; Longitude of event; Phytoplankton, biomass as carbon, integrated; Picophytoplankton, biomass as carbon, integrated; Prymnesiophyceae, biomass as carbon, integrated; Water sample; White Sea; WS
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
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  • 7
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    (Table 2) Species-, age- and size compositions of under ice zooplankton at Station Chupa-2002-1 at full flood-tide and ebb-tide and contribution of individual species to abundance and biomass (2003)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Acartia longiremis; Aeginopsis laurentii; Aglantha digitale; Appendicularia, fecal pellets; Archive of Ocean Data; ARCOD; Beroe cucumis; Calanus glacialis; Chupa-2002-1; Copepoda, fecal pellets; Depth, bottom/max; Depth, top/min; DEPTH, water; Fritillaria borealis; Gastropoda, larvae; Harpacticoida; Metridia longa; Microsetella norvegica; MULT; Multiple investigations; Neoscolecithrix farrani; Nudibranchia sp., larvae; Oikopleura vanhoeffeni; Oithona similis; Oncaea borealis; Parathemisto abyssorum; Pleurobrachia pileus; Plotocnide borealis; Polychaeta, larvae; Pseudocalanus minutus; Sagitta elegans; Tide; Time of day; Tisbe furcata; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 94 data points
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  • 8
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    (Table 3) Abundance and percentage of mature and carying egg sacks females of Pseudocalanus minutus of their total abundance at different depths at Station Chupa-2002-1 (2003)
    PANGAEA
    Details
    Publication Date: 2023-09-18
    Keywords: Archive of Ocean Data; ARCOD; Calculated; Calculated from abundance/volume; Chupa-2002-1; Depth, bottom/max; Depth, top/min; DEPTH, water; MULT; Multiple investigations; Pseudocalanus minutus, female; Tide; Time of day; White Sea
    Type: Dataset
    Format: text/tab-separated-values, 72 data points
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