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  • 1
    Electronic Resource
    Electronic Resource
    Spatial variability of phytoplankton, nutrients and new production estimates in the waters around Svalbard (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 19 (2000), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Phytoplankton dynamics and carbon input into Arctic and sub-Arctic ecosystems were investigated around Svalbard, in summer 1991. Phytoplankton biomass, species composition and dissolved nutrient concentrations were analysed from water samples collected along seven transects. Phytoplankton biomass was low especially to the north (Chlorophyll-a mean 0.3 pg 1- '), where flagellates dominated the communities and only ice-diatoms were present. To the west, the phytoplankton composition was representative of a summer Atlantic community, in a post-bloom state. Zooplankton grazing, mainly by copepods, appeared to be the main control on biomass to the west and north of Svalbard.In the Barents Sea (east of Svalbard), an ice edge bloom was observed (Chlorophyll-a max. 6.8 pgl-') and the ice edge receded at a rate of approximately 1 1 km day-'. The phytoplankton community was represented by marginal ice species, especially Phaeocystis poucherii and Chaeroceros socialis. South of the ice edge, Deep Chlorophyll Maxima (DCM) were observed, as surface waters became progressively nutrient-depleted. In these surface waters, the phytoplankton were predominantly auto- and heterotrophic flagellates.Carbon production measurements revealed high net production (new and regenerated) to the north of the Barents Sea Polar Front (BSPF); it was especially high at the receding ice edge (reaching 1.44gC m-'day-'). To the south, a low level of production was maintained, mainly through regenerative processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.2000.tb00340.x
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Chemical oceanography during POLARSTERN cruise ARK-IX/4 (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Marine chemistry data (dissolved oxygen and dissolved inorganic nutrients) were collected from 10 august 1993 to 24 September 1993, during ARK IX/4cruise, along six sections stretching from the continental shelves of the Barents and Laptev Seas, over the shelf break and into the deep Eastern Nansen and Amundsen Basins. These investigations are a direct continuation of "SEAS" project in the Barents Sea (ARKVIII/2, 1991). The dataset includes discrete samples, at different depths, of 63 stations. Sampling of chemical measurements was carried out in parallel to physical-oceanography sampling and phytoplankton work using Rosette-water sampler mounted on a CTD (Neil Brown, Mark III). Discrete water samples for dissolved oxygen (DO) and dissolved inorganic nutrients (nitrate, nitrite, phosphate and silicate) were collected and analyzed directly on board of R/V Polarstern within a few hours after sampling. Dissolved inorganic nutrients (NO3+NO2, SiO4, PO4) have been measured by means of a Chemlab Continuous FloW Analyser according to the standard methods reported by Grassof 1983. Dissolved oxygen was analyzed by the Winkler method, according to Grasshoff 1983, as well.
    Keywords: ARK-IX/4; Barents Sea; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; dissolved oxygen; Elevation of event; Event label; Laptev Sea; Latitude of event; Longitude of event; Nitrate and Nitrite; nutrients; Nutrients, CHEMLAB autoanalyser; Oxygen; Phosphate; Polarstern; PS27; PS27/006-1; PS27/007-1; PS27/008-1; PS27/009-1; PS27/010-1; PS27/012-1; PS27/014-1; PS27/015-1; PS27/018-1; PS27/019-1; PS27/020-1; PS27/021-1; PS27/022-1; PS27/023-1; PS27/024-1; PS27/025-1; PS27/026-1; PS27/027-1; PS27/028-1; PS27/029-1; PS27/030-1; PS27/031-1; PS27/032-1; PS27/033-1; PS27/034-1; PS27/035-1; PS27/036-1; PS27/037-1; PS27/038-1; PS27/039-1; PS27/040-1; PS27/041-1; PS27/042-1; PS27/043-1; PS27/044-1; PS27/046-1; PS27/047-1; PS27/049-1; PS27/050-1; PS27/051-1; PS27/052-1; PS27/053-1; PS27/054-1; PS27/055-1; PS27/056-1; PS27/057-1; PS27/058-1; PS27/059-1; PS27/060-1; PS27/061-1; PS27/062-1; PS27/063-1; PS27/064-1; PS27/065-1; PS27/067-1; PS27/068-1; PS27/069-1; PS27/070-1; PS27/071-1; PS27/072-1; PS27/073-1; PS27/074-1; Silicate; Titration, Winkler
    Type: Dataset
    Format: text/tab-separated-values, 4377 data points
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    DATA PANGAEA
  • 3
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    Unknown
    Constraining the Oceanic Uptake and Fluxes of Greenhouse Gases by Building an Ocean Network of Certified Stations: The Ocean Component of the Integrated Carbon Observation System, ICOS-Oceans (2019)
    Frontiers
    In:  Frontiers in Marine Science, 6 . Art.Nr. 544.
    Details
    Publication Date: 2022-01-31
    Description: The European Research Infrastructure Consortium “Integrated Carbon Observation System” (ICOS) aims at delivering high quality greenhouse gas (GHG) observations and derived data products (e.g., regional GHG-flux maps) for constraining the GHG balance on a European level, on a sustained long-term basis. The marine domain (ICOS-Oceans) currently consists of 11 Ship of Opportunity lines (SOOP – Ship of Opportunity Program) and 10 Fixed Ocean Stations (FOSs) spread across European waters, including the North Atlantic and Arctic Oceans and the Barents, North, Baltic, and Mediterranean Seas. The stations operate in a harmonized and standardized way based on community-proven protocols and methods for ocean GHG observations, improving operational conformity as well as quality control and assurance of the data. This enables the network to focus on long term research into the marine carbon cycle and the anthropogenic carbon sink, while preparing the network to include other GHG fluxes. ICOS data are processed on a near real-time basis and will be published on the ICOS Carbon Portal (CP), allowing monthly estimates of CO2 air-sea exchange to be quantified for European waters. ICOS establishes transparent operational data management routines following the FAIR (Findable, Accessible, Interoperable, and Reusable) guiding principles allowing amongst others reproducibility, interoperability, and traceability. The ICOS-Oceans network is actively integrating with the atmospheric (e.g., improved atmospheric measurements onboard SOOP lines) and ecosystem (e.g., oceanic direct gas flux measurements) domains of ICOS, and utilizes techniques developed by the ICOS Central Facilities and the CP. There is a strong interaction with the international ocean carbon cycle community to enhance interoperability and harmonize data flow. The future vision of ICOS-Oceans includes ship-based ocean survey sections to obtain a three-dimensional understanding of marine carbon cycle processes and optimize the existing network design.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    DOI: 10.3389/fmars.2019.00544
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
    facet.materialart.
    Unknown
    Constraining the oceanic uptake and fluxes of greenhouse gases by building an ocean network of certified stations: The ocean component of the Integrated Carbon Observation System, ICOS-Oceans (2019)
    In:  EPIC3Frontiers in Marine Science, 6, pp. 544, ISSN: 2296-7745
    Details
    Publication Date: 2019-09-11
    Description: The European Research Infrastructure Consortium “Integrated Carbon Observation System” (ICOS) aims at delivering high quality greenhouse gas (GHG) observations and derived data products (e.g., regional GHG-flux maps) for constraining the GHG balance on a European level, on a sustained long-term basis. The marine domain (ICOS-Oceans) currently consists of 11 Ship of Opportunity lines (SOOP – Ship of Opportunity Program) and 10 Fixed Ocean Stations (FOSs) spread across European waters, including the North Atlantic and Arctic Oceans and the Barents, North, Baltic, and Mediterranean Seas. The stations operate in a harmonized and standardized way based on communityproven protocols and methods for ocean GHG observations, improving operational conformity as well as quality control and assurance of the data. This enables the network to focus on long term research into the marine carbon cycle and the anthropogenic carbon sink, while preparing the network to include other GHG fluxes. ICOS data are processed on a near real-time basis and will be published on the ICOS Carbon Portal (CP), allowing monthly estimates of CO2 air-sea exchange to be quantified for European waters. ICOS establishes transparent operational data management routines following the FAIR (Findable, Accessible, Interoperable, and Reusable) guiding principles allowing amongst others reproducibility, interoperability, and traceability. The ICOSOceans network is actively integrating with the atmospheric (e.g., improved atmospheric measurements onboard SOOP lines) and ecosystem (e.g., oceanic direct gas flux measurements) domains of ICOS, and utilizes techniques developed by the ICOS Central Facilities and the CP. There is a strong interaction with the international ocean carbon cycle community to enhance interoperability and harmonize data flow. The future vision of ICOS-Oceans includes ship-based ocean survey sections to obtain a threedimensional understanding of marine carbon cycle processes and optimize the existing network design.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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    PAPER (OA)
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