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  • 1
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    Total phytoplankton abundance and biomass in the surface and fluorescence maximum layers and contributions of dominant species to their values in the Werstern Arctic in July-August 2003
    PANGAEA
    In:  Supplement to: Sergeeva, V M; Sukhanova, Irina N; Flint, Mikhail V; Pautova, L A; Grebmeier, Jacqueline M; Cooper, Lee W (2010): Phytoplankton community in the Western Arctic in July-August 2003. Translated from Okeanologiya, 2010, 50(2), 203-217, Oceanology, 50(2), 184-197, https://doi.org/10.1134/S0001437010020049
    Details
    Publication Date: 2023-05-12
    Description: Phytoplankton community was studied in the Bering Strait and over the shelf, continental slope, and deep-water zones of the Chukchi and Beaufort Seas in the middle of the vegetative season (July-August 2003). Its structure was analyzed in relation to ice conditions and seasonal patterns of water warming, stratification, and nutrient concentrations. Overall variations in phytoplankton abundance from 200 to 6000000 cells/l and biomass from 0.1 to 444.1 µg C/l.were estimated. The bulk of phytoplankton cells concentrated in the seasonal picnocline at depths 10-25 m. The highest values of cell abundance and biomass were recorded in regions influenced by inflow of Bering Sea waters or characterized by intense hydrodynamics, such as the Bering Strait, Barrow Canyon, and the outer shelf and slope of the Chukchi Sea. In the middle of the vegetative season, phytoplankton in the study region of the Western Arctic proved to comprise three successional (seasonal) assemblages: early spring, late spring, and summer assemblages. Their spatial distribution was dependent mainly on local features of hydrological and nutrient regimes rather than on general latitudinal trends of seasonal succession characteristic of arctic ecosystems.
    Keywords: Archive of Ocean Data; ARCOD; Barrow Canyon; Beaufort Sea; Bering Staight; Bottle, Niskin 30-L; Chukchi Sea; Chukchi shelf; NBP03-04A-126; NBP03-04A-128; NBP03-04A-135; NBP03-04A-137; NBP03-04A-138; NBP03-04A-140; NBP03-04A-142; NBP03-04A-151; NBP03-04A-190; NBP03-04A-194; NBP03-04A-233; NBP03-04A-27; NBP03-04A-286; NBP03-04A-29; NBP03-04A-31; NBP03-04A-312; NBP03-04A-4; NBP03-04A-45; NBP03-04A-49; NBP03-04A-5; NBP03-04A-53; NBP03-04A-6; NBP03-04A-61; NBP03-04A-63; NBP03-04A-64; NBP03-04A-65; NBP03-04A-73; NBP03-04A-74; NBP03-04A-87; NBP03-04A-97; NIS_30L
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 2
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    Phytoplankton of the southwest Kara Sea on August 9-12, 2007
    PANGAEA
    In:  P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow | Supplement to: Sukhanova, Irina N; Flint, Mikhail V; Sergeeva, V M; Kremenetskiy, V V (2011): Phytoplankton of the south-western part of the Kara Sea. Translated from Okeanologiya, 2011, 51(6), 1039-1053, Oceanology, 51(6), 978-992, https://doi.org/10.1134/S000143701106018X
    Details
    Publication Date: 2023-05-12
    Description: A research was carried out along a transect from the Yamal Peninsula coast towards the outer shelf of the southwestern the Kara Sea in September 2007. 130 phytoplankton species were identified, among which 63 were found in the area for the first time. Total phytoplankton abundance varied from of 0.2 x10**9 to 11.3x10**9 cells/m**2, while biomass from 43 to 1057 mgC/m**2. A well pronounced cross-shelf zoning in phytoplankton communities was ascertained. The inner shelf zone about 30 km wide with depths down to 30 meters was characterized by predominance of diatoms (up to 80% of total algal abundance and biomass). The second group by value was dinoflagellates. Seaward in the area of depth increase from 30 to 140 m, the zone of the Yamal Current was located, which was 40 km wide and notable for its active water dynamics. Total abundance in the zone was maximal for the entire investigated area: up to 11.3x10**9 cells/m**2. Autotrophic flagellates were the leading group in phytoplankton, their share in total abundance reached 56-82%. Further than 70 km from the shore, the outer shelf zone was found with the water column rigidly stratified. The highest for the whole area phytoplankton biomass was identified here (up to 1.06 gC/m**2), 80% of which concentrated above the halocline. Diatoms dominated in phytoplankton abundance (up to 92%) and biomass (up to 90%) that resulted from mass development of two species: Chaetoceros diadema and Leptocylindrus danicus.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 3
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    Phytoplankton in the surface desalted lens of the Kara Sea
    PANGAEA
    In:  P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow
    Details
    Publication Date: 2023-05-12
    Description: Phytoplankton of a surface strongly desalinated water lens was investigated on the basis of materials collected during Cruise 57 of R/V Akademik Mstislav Keldysh in September 2007. The lens with salinity 〈18 psu had area of ca. 19000 sq. km and was located in the northwestern part of the Kara Sea near the eastern coast of Novaya Zemlya. It was a specific biotope that had been isolated from surrounding waters for more than three months. In the investigated area 66 algae species were identified. The maximal species diversity was found in the upper layers of the desalinated lens, where species number was 1.5 to 3 times higher than in other parts of the water column. Phytoplankton abundance in the upper layers of the lens was 1.5 to 4.5 times higher than in its lower part and generally higher than below the picnocline. Diatoms were the most abundant group in the upper layers of the lens, while flagellates dominated in the subpicnocline part of the water column. Maximal values of phytoplankton biomass were observed everywhere in the upper layers of the lens, where they were 1.2 to 3.7 times higher than in the lower part of the lens and 1.3 to 7.2 times higher than in the layer below the picnocline. Dinoflagellates generally gave the most contribution to total phytoplankton biomass. Phytoplankton of the desalinated surface lens in the northwestern part of the Kara Sea by its composition and quantitative parameters had the nearest resemblance to a phytocenosis that we observed two weeks later at a shallow desalinated shelf closely adjacent to the Ob estuary.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
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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
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    DATA PANGAEA
  • 5
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    (Table 1a) Total phytoplankton abundance in the surface water layer and contributions of dominant species to its value in the Werstern Arctic in July-August 2003
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Archive of Ocean Data; ARCOD; Area/locality; Barrow Canyon; Beaufort Sea; Bering Staight; Bottle, Niskin 30-L; Calculated; Chukchi Sea; Chukchi shelf; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Latitude of event; Longitude of event; Microscopy; NBP03-04A-126; NBP03-04A-128; NBP03-04A-135; NBP03-04A-137; NBP03-04A-138; NBP03-04A-140; NBP03-04A-142; NBP03-04A-151; NBP03-04A-190; NBP03-04A-194; NBP03-04A-233; NBP03-04A-27; NBP03-04A-286; NBP03-04A-29; NBP03-04A-31; NBP03-04A-312; NBP03-04A-4; NBP03-04A-45; NBP03-04A-49; NBP03-04A-5; NBP03-04A-53; NBP03-04A-6; NBP03-04A-61; NBP03-04A-63; NBP03-04A-64; NBP03-04A-65; NBP03-04A-73; NBP03-04A-74; NBP03-04A-87; NBP03-04A-97; NIS_30L; Phytoplankton; Species; Species dominance
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
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  • 6
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    (Table 1b) Total phytoplankton abundance in the fluorescence maximum layer and contributions of dominant species to its value in the Werstern Arctic in July-August 2003
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Archive of Ocean Data; ARCOD; Area/locality; Barrow Canyon; Beaufort Sea; Bering Staight; Bottle, Niskin 30-L; Calculated; Chukchi Sea; Chukchi shelf; DEPTH, water; Event label; Latitude of event; Longitude of event; Microscopy; NBP03-04A-126; NBP03-04A-128; NBP03-04A-135; NBP03-04A-137; NBP03-04A-138; NBP03-04A-140; NBP03-04A-142; NBP03-04A-151; NBP03-04A-190; NBP03-04A-194; NBP03-04A-233; NBP03-04A-27; NBP03-04A-286; NBP03-04A-29; NBP03-04A-31; NBP03-04A-312; NBP03-04A-4; NBP03-04A-45; NBP03-04A-49; NBP03-04A-5; NBP03-04A-53; NBP03-04A-6; NBP03-04A-61; NBP03-04A-63; NBP03-04A-64; NBP03-04A-65; NBP03-04A-73; NBP03-04A-74; NBP03-04A-87; NBP03-04A-97; NIS_30L; Phytoplankton; Species; Species dominance
    Type: Dataset
    Format: text/tab-separated-values, 184 data points
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  • 7
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    (Table 2a) Total phytoplankton biomass in the surface water layer and contributions of dominant species to its value in the Western Arctic in July-August 2003
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Archive of Ocean Data; ARCOD; Area/locality; Barrow Canyon; Beaufort Sea; Bering Staight; Bottle, Niskin 30-L; Calculated; Calculated using allometric equations; Chukchi Sea; Chukchi shelf; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Latitude of event; Longitude of event; NBP03-04A-126; NBP03-04A-128; NBP03-04A-135; NBP03-04A-137; NBP03-04A-138; NBP03-04A-140; NBP03-04A-142; NBP03-04A-151; NBP03-04A-190; NBP03-04A-194; NBP03-04A-233; NBP03-04A-27; NBP03-04A-286; NBP03-04A-29; NBP03-04A-31; NBP03-04A-312; NBP03-04A-4; NBP03-04A-45; NBP03-04A-49; NBP03-04A-5; NBP03-04A-53; NBP03-04A-6; NBP03-04A-61; NBP03-04A-63; NBP03-04A-64; NBP03-04A-65; NBP03-04A-73; NBP03-04A-74; NBP03-04A-87; NBP03-04A-97; NIS_30L; Phytoplankton, biomass as carbon; Species; Species dominance
    Type: Dataset
    Format: text/tab-separated-values, 260 data points
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  • 8
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    (Table 2b) Total phytoplankton biomass in the fluorescence maximum layer and contributions of dominant species to its value in the Western Arctic in July-August 2003
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Archive of Ocean Data; ARCOD; Area/locality; Barrow Canyon; Beaufort Sea; Bering Staight; Bottle, Niskin 30-L; Calculated; Calculated using allometric equations; Chukchi Sea; Chukchi shelf; DEPTH, water; Event label; Latitude of event; Longitude of event; NBP03-04A-126; NBP03-04A-128; NBP03-04A-135; NBP03-04A-137; NBP03-04A-138; NBP03-04A-140; NBP03-04A-142; NBP03-04A-151; NBP03-04A-190; NBP03-04A-194; NBP03-04A-233; NBP03-04A-27; NBP03-04A-286; NBP03-04A-29; NBP03-04A-31; NBP03-04A-312; NBP03-04A-4; NBP03-04A-45; NBP03-04A-49; NBP03-04A-5; NBP03-04A-53; NBP03-04A-6; NBP03-04A-61; NBP03-04A-63; NBP03-04A-64; NBP03-04A-65; NBP03-04A-73; NBP03-04A-74; NBP03-04A-87; NBP03-04A-97; NIS_30L; Phytoplankton, biomass as carbon; Species; Species dominance
    Type: Dataset
    Format: text/tab-separated-values, 172 data points
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  • 9
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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
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  • 10
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    (Table 2) Abundance, wet biomass, and carbon biomass of all major groups and total phytoplankton in the upper and lower parts of the desalinated water lens and in the layer under the lens in the Kara Sea (2012)
    PANGAEA
    In:  P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow
    Details
    Publication Date: 2023-07-09
    Keywords: Akademik Mstislav Keldysh; AMK54; AMK54-4961; AMK54-4962; AMK54-4963; AMK54-4964; AMK54-4965; AMK54-4966; AMK54-4967; Archive of Ocean Data; ARCOD; Calculated; Coccolithophoridae, biomass as carbon; Coccolithophoridae, total; Coccoliths, biomass; Diatoms; Diatoms, biomass; Diatoms, biomass as carbon; Dinoflagellates; Dinoflagellates, biomass; Dinoflagellates, biomass as carbon; Elevation of event; Event label; Flagellates; Flagellates, biomass; Flagellates, biomass as carbon; Kara Sea; Latitude of event; Longitude of event; Microscopy; MULT; Multiple investigations; Phytoplankton; Phytoplankton, biomass; Phytoplankton, biomass as carbon; Sample position
    Type: Dataset
    Format: text/tab-separated-values, 399 data points
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