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  • 1
    Electronic Resource
    Electronic Resource
    The marine ecosystem of Kongsfjorden, Svalbard (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 21 (2002), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Kongsfjorden is a glacial fjord in the Arctic (Svalbard) that is influenced by both Atlantic and Arctic water masses and harbours a mixture of boreal and Arctic flora and fauna. Inputs from large tidal glaciers create steep environmental gradients in sedimentation and salinity along the length of this fjord. The glacial inputs cause reduced biomass and diversity in the benthic community in the inner fjord. Zooplankton suffers direct mortality from the glacial outflow and primary production is reduced because of limited light levels in the turbid, mixed inner waters. The magnitude of the glacial effects diminishes towards the outer fjord. Kongsfjorden is an important feeding ground for marine mammals and seabirds. Even though the fjord contains some boreal fauna, the prey consumed by upper trophic levels is mainly Arctic organisms. Marine mammals constitute the largest top-predator biomass, but seabirds have the largest energy intake and also export nutrients and energy out of the marine environment. Kongsfjorden has received a lot of research attention in the recent past. The current interest in the fjord is primarily based on the fact that Kongsfjorden is particularly suitable as a site for exploring the impacts of possible climate changes, with Atlantic water influx and melting of tidal glaciers both being linked to climate variability. The pelagic ecosystem is likely to be most sensitive to the Atlantic versus Arctic influence, whereas the benthic ecosystem is more affected by long-term changes in hydrography as well as changes in glacial runoff and sedimentation. Kongsfjorden will be an important Arctic monitoring site over the coming decades and a review of the current knowledge, and a gap analysis, are therefore warranted. Important knowledge gaps include a lack of quantitative data on production, abundance of key prey species, and the role of advection on the biological communities in the fjord.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.2002.tb00073.x
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Abundance of pteropods in northern Svalbard waters during two 'On Thin Ice' cruises in 2003 (2013)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Abundance per volume; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Latitude of event; Longitude of event; Svalb_north_01; Svalb_north_02; Svalb_north_03; Svalb_north_04; Svalb_north_05; Svalb_north_06; Svalb_north_07; Svalb_north_08; Svalb_north_09; Svalb_north_10; Svalb_north_11; Svalb_north_12; Svalb_north_13; Svalb_north_14; Svalbard; Taxon/taxa; Type; Uniform resource locator/link to reference; WP2; WP-2 towed closing plankton net
    Type: Dataset
    Format: text/tab-separated-values, 308 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    (Table 5) Mesozooplankton abundance during two 'On Thin Ice' cruises
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Counting, light microscope; DATE/TIME; Depth comment; Mesozooplankton; Svalb_north; Svalbard; Taxon/taxa; Water bodies
    Type: Dataset
    Format: text/tab-separated-values, 612 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    (Table 1) Ice coverage, stage of algal bloom and chlorophyll a concentration during two 'On Thin Ice' cruises
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Area/locality; Chlorophyll a, areal concentration; Classification; DATE/TIME; Depth, bottom/max; Erik Eriksen Strait; Event label; Flaket, Svalbard coast; Fram Strait; Hinlopen Strait; Jan Mayen; JM03; JM03_405; JM03_411; JM03_419; JM03_441; Kvitoyarenna; LA03/11; LA03/11_EE4; LA03/11_FL; LA03/11_H1; LA03/11_ICE-1; LA03/11_ICE-3; LA03/11_N1; LA03/11_N2; LA03/11_N3; LA03/11_R1; LA03/11_R2; Lance; Latitude of event; Longitude of event; MULT; Multiple investigations; Norskebanken, Svalbard coast; Rijpfjorden, Svalbard; Sea ice; Sofiadjupet; Station label; Water bodies
    Type: Dataset
    Format: text/tab-separated-values, 95 data points
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    DATA PANGAEA
  • 5
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    (Table 3) Mesozooplankton occurrence and biomass during two 'On Thin Ice' cruises
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Biomass, dry mass, standard deviation; Biomass, dry mass per area; Calculated from dry weight/volume; Occurrence; Station label; Svalb_north; Svalbard; Taxon/taxa
    Type: Dataset
    Format: text/tab-separated-values, 653 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    (Table 3) Mean abundance of zooplankton taxa during spring, summer and autumn 2002 in Kongsfjorden, Svalbard (2009)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Acartia longiremis; Aglantha digitale; Area/locality; Beroe cucumis; Biological sample; BIOS; Bivalvia, larvae; Bradyidius similis; Calanoida, nauplii; Calanus finmarchicus; Calanus glacialis; Calanus hyperboreus; Cirripedia, larvae; Clione limacina; DATE/TIME; Date/time end; Echinodermata, larvae; Eukrohnia hamata; Foraminifera, planktic; Fritillaria borealis; Harpacticoida indeterminata; Kongsfjorden; Kongsfjorden, Spitsbergen, Arctic; Limacina helicina; Metridia longa; Microcalanus spp.; Oikopleura spp.; Oithona atlantica; Oithona similis; Oncaea borealis; Ostracoda; Paraeuchaeta norvegica; Polychaeta, larvae; Pseudocalanus spp.; Sagitta elegans; Season; Themisto abyssorum; Thysanoessa longicaudata
    Type: Dataset
    Format: text/tab-separated-values, 164 data points
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    DATA PANGAEA
  • 7
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    (Table 5) Relative abundance of zooplankton taxa during spring, summer and autumn 2002 in Kongsfjorden, Svalbard (2009)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Calanus finmarchicus; Calanus glacialis; Calanus hyperboreus; Cirripedia, nauplii; DATE/TIME; Echinodermata, larvae; Event label; Indeterminata; Kongsfjorden_K0; Kongsfjorden_K1; Kongsfjorden_K2; Kongsfjorden_K3; Kongsfjorden_K5; Kongsfjorden_V10_2002; Kongsfjorden_V6; Kongsfjorden, Spitsbergen, Arctic; Latitude of event; Longitude of event; Metridia longa; Microcalanus spp.; Oithona similis; Oncaea borealis; PLA; Plankton net; Pseudocalanus spp.; Season; Station label
    Type: Dataset
    Format: text/tab-separated-values, 273 data points
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    DATA PANGAEA
  • 8
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    Ice and chlorophyll a concentration and mesozooplankton characteristics during two 'On Thin Ice' cruises, northern Svalbard waters (2008)
    PANGAEA
    In:  Supplement to: Blachowiak-Samolyk, Katarzyna; Søreide, Janne E; Kwasniewski, Slawek; Sundfjord, Arild; Hop, Haakon; Falk-Petersen, Stig; Hegseth, Else Nøst (2008): Hydrodynamic control of mesozooplankton abundance and biomass in northern Svalbard waters (79–81°N). Deep Sea Research Part II: Topical Studies in Oceanography, 55(20-21), 2210-2224, https://doi.org/10.1016/j.dsr2.2008.05.018
    Details
    Publication Date: 2023-12-13
    Description: The spatial variation in mesozooplankton biomass, abundance and species composition in relation to oceanography was studied in different climatic regimes (warm Atlantic vs. cold Arctic) in northern Svalbard waters. Relationships between the zooplankton community and various environmental factors (salinity, temperature, sampling depth, bottom depth, sea-ice concentrations, algal biomass and bloom stage) were established using multivariate statistics. Our study demonstrated that variability in the physical environment around Svalbard had measurable effect on the pelagic ecosystem. Differences in bottom depth and temperature-salinity best explained more than 40% of the horizontal variability in mesozooplankton biomass (DM/m**2) after adjusting for seasonal variability. Salinity and temperature also explained much (21% and 15%, respectively) of the variability in mesozooplankton vertical distribution (ind./m**3) in August. Algal bloom stage, chlorophyll-a biomass, and depth stratum accounted for additional 17% of the overall variability structuring vertical zooplankton distribution. Three main zooplankton communities were identified, including Atlantic species Fritillaria borealis, Oithona atlantica, Calanus finmarchicus, Themisto abyssorum and Aglantha digitale; Arctic species Calanus glacialis, Gammarus wilkitzkii, Mertensia ovum and Sagitta elegans; and deeper-water inhabitants Paraeuchaeta spp., Spinocalanus spp., Aetideopsis minor, Mormonilla minor, Scolecithricella minor, Gaetanus (Gaidius) tenuispinus, Ostracoda, Scaphocalanus brevicornis and Triconia borealis. Zooplankton biomasses in Atlantic- and Arctic-dominated water masses were similar, but biological ''hot-spots'' were associated with Arctic communities.
    Keywords: International Polar Year (2007-2008); IPY
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 9
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    (Table 1) Physical oceanography during Lance cruise LA99/2 in the marginal ice zone of the Barents Sea (2008)
    PANGAEA
    In:  Supplement to: Blachowiak-Samolyk, Katarzyna; Kwasniewski, Slawek; Hop, Haakon; Falk-Petersen, Stig (2008): Magnitude of mesozooplankton variability: a case study from the Marginal Ice Zone of the Barents Sea in spring. Journal of Plankton Research, 30(3), 311-323, https://doi.org/10.1093/plankt/fbn002
    Details
    Publication Date: 2024-02-27
    Description: Zooplankton was studied on eight stations in the marginal ice zone (MIZ) of the Barents Sea, in May 1999, along two transects across the ice edge. On each station, physical background measurements and zooplankton samples were taken every 6 h over a 24 h period at five discrete depth intervals. Cluster analysis revealed separation of open water stations from all ice stations as well as high similarity level among replicates belonging to particular station. Based on five replicates per station, analysis of variance (ANOVA) confirmed significant differences (P 〈 0.05) in abundances of the main mesozooplankton taxa among stations. Relations between the zooplankton community and environmental parameters were established using redundancy analysis (CANOCO). In total, 55% of mesozooplankton variability within studied area was explained by eight variables with significant conditional effects: depth stratum, fluorescence, temperature, salinity, bottom depth, latitude, bloom situation, and ice concentration. GLM models supported supposition about clear and negative relationship between concentration of Oithona similis, and overall mesozooplankton diversity The analyses showed a dynamic relationship between mesozooplankton distribution and hydrological conditions on short-term scale. Furthermore, our study demonstrated that variability in the physical environment of dynamic MIZ of the Barents Sea has measurable effect on the Arctic pelagic ecosystem.
    Keywords: Barents Sea; Classification; CTD, Seabird; CTD, Sea-Bird SBE 911plus; CTD-R; DATE/TIME; Depth, bottom/max; Event label; Fluorescence; Ice coverage; International Polar Year (2007-2008); IPY; LA99/2; LA99/2_A31; LA99/2_A33; LA99/2_A34; LA99/2_A35; LA99/2_B49; LA99/2_B50; LA99/2_B51; LA99/2_B52; Lance; LATITUDE; LONGITUDE; Salinity; Sample ID; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 271 data points
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    DATA PANGAEA
  • 10
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    Absolute and relative abundances of zooplankton taxa in Kongsfjorden during 2002 (2009)
    PANGAEA
    In:  Supplement to: Walkusz, Wojciech; Kwasniewski, Slawek; Falk-Petersen, Stig; Hop, Haakon; Tverberg, Vigdis; Wieczorek, Piotr; Weslawski, Jan Marcin (2009): Seasonal and spatial changes in the zooplankton community of Kongsfjorden, Svalbard. Polar Research, 28(2), 254-281, https://doi.org/10.1111/j.1751-8369.2009.00107.x
    Details
    Publication Date: 2023-12-13
    Description: Seasonal changes in the zooplankton composition of the glacially influenced Kongsfjorden, Svalbard (79°N, 12°E), and its adjacent shelf were studied in 2002. Samples were collected in the spring, summer and autumn in stratified hauls (according to hydrographic characteristics), by means of a 0.180-mm Multi Plankton Sampler. A strong front between the open sea and the fjord waters was observed during the spring, preventing water mass exchange, but was not observed later in the season. The considerable seasonal changes in zooplankton abundance were related to the seasonal variation in hydrographical regime. The total zooplankton abundance during the spring (40-2010 individuals/m**3) was much lower than in the summer and autumn (410-10,560 individuals/m**3). The main factors shaping the zooplankton community in the fjord include: the presence of a local front, advection, the flow pattern and the decreasing depth of the basin in the inner fjord. Presumably these factors regulate the gross pattern of zooplankton density and distribution, and override the importance of biological processes. This study increased our understanding of seasonal processes in fjords, particularly with regard to the strong seasonal variability in the Arctic.
    Keywords: International Polar Year (2007-2008); IPY
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
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