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  • 1
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    Unknown
    Physical oceanography (CTD) data in the vicinity of Herschel Island - Qikiqtaruk, Yukon, Canada (2015-2023) (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-15
    Description: This dataset contains CTD measurements taken in 2015, 2016, 2017, 2018, 2019, 2022, and 2023 during expeditions to Herschel Island - Qikiqtaruk, Yukon, Canada. For the data recording a CTD CastAway was used. The sampling was conducted from a boat from which the CTD was lowered to the sea floor at the specific sampling sites. The sampling information encompasses the GPS position, water depth, pressure, temperature, electrical conductivity, specific conductance, and salinity.
    Keywords: AWI_PerDyn; AWI_Perma; AWI Arctic Land Expedition; CA-Land_2015_YukonCoast; CA-Land_2015_YukonCoast_CTD_001; CA-Land_2015_YukonCoast_CTD_002; CA-Land_2015_YukonCoast_CTD_003; CA-Land_2015_YukonCoast_CTD_004; CA-Land_2015_YukonCoast_CTD_005; CA-Land_2015_YukonCoast_CTD_006; CA-Land_2015_YukonCoast_CTD_007; CA-Land_2015_YukonCoast_CTD_008; CA-Land_2015_YukonCoast_CTD_009; CA-Land_2015_YukonCoast_CTD_010; CA-Land_2015_YukonCoast_CTD_011; CA-Land_2015_YukonCoast_CTD_012; CA-Land_2015_YukonCoast_CTD_013; CA-Land_2015_YukonCoast_CTD_014; CA-Land_2015_YukonCoast_CTD_015; CA-Land_2015_YukonCoast_CTD_016; CA-Land_2015_YukonCoast_CTD_017; CA-Land_2015_YukonCoast_CTD_018; CA-Land_2015_YukonCoast_CTD_019; CA-Land_2015_YukonCoast_CTD_020; CA-Land_2015_YukonCoast_CTD_021; CA-Land_2015_YukonCoast_CTD_022; CA-Land_2015_YukonCoast_CTD_023; CA-Land_2015_YukonCoast_CTD_024; CA-Land_2015_YukonCoast_CTD_025; CA-Land_2016_YukonCoast_CTD_001; CA-Land_2016_YukonCoast_CTD_002; CA-Land_2016_YukonCoast_CTD_003; CA-Land_2016_YukonCoast_CTD_004; CA-Land_2016_YukonCoast_CTD_005; CA-Land_2016_YukonCoast_CTD_006; CA-Land_2016_YukonCoast_CTD_007; CA-Land_2016_YukonCoast_CTD_008; CA-Land_2016_YukonCoast_CTD_009; CA-Land_2016_YukonCoast_spring; CA-Land_2017_YukonCoast; CA-Land_2017_YukonCoast_CTD_001; CA-Land_2017_YukonCoast_CTD_002; CA-Land_2017_YukonCoast_CTD_003; CA-Land_2017_YukonCoast_CTD_004; CA-Land_2017_YukonCoast_CTD_005; CA-Land_2017_YukonCoast_CTD_006; CA-Land_2017_YukonCoast_CTD_007; CA-Land_2017_YukonCoast_CTD_008; CA-Land_2017_YukonCoast_CTD_009; CA-Land_2017_YukonCoast_CTD_010; CA-Land_2017_YukonCoast_CTD_011; CA-Land_2017_YukonCoast_CTD_012; CA-Land_2017_YukonCoast_CTD_013; CA-Land_2017_YukonCoast_CTD_014; CA-Land_2017_YukonCoast_CTD_015; CA-Land_2017_YukonCoast_CTD_016; CA-Land_2017_YukonCoast_CTD_017; CA-Land_2017_YukonCoast_CTD_018; CA-Land_2017_YukonCoast_CTD_019; CA-Land_2017_YukonCoast_CTD_020; CA-Land_2017_YukonCoast_CTD_021; CA-Land_2017_YukonCoast_CTD_022; CA-Land_2017_YukonCoast_CTD_023; CA-Land_2017_YukonCoast_CTD_024; CA-Land_2017_YukonCoast_CTD_025; CA-Land_2017_YukonCoast_CTD_026; CA-Land_2017_YukonCoast_CTD_027; CA-Land_2017_YukonCoast_CTD_028; CA-Land_2017_YukonCoast_CTD_029; CA-Land_2017_YukonCoast_CTD_030; CA-Land_2017_YukonCoast_CTD_031; CA-Land_2017_YukonCoast_CTD_032; CA-Land_2017_YukonCoast_CTD_033; CA-Land_2017_YukonCoast_CTD_034; CA-Land_2017_YukonCoast_CTD_035; CA-Land_2017_YukonCoast_CTD_036; CA-Land_2017_YukonCoast_CTD_037; CA-Land_2017_YukonCoast_CTD_038; CA-Land_2017_YukonCoast_CTD_039; CA-Land_2017_YukonCoast_CTD_040; CA-Land_2017_YukonCoast_CTD_041; CA-Land_2017_YukonCoast_CTD_042; CA-Land_2017_YukonCoast_CTD_043; CA-Land_2017_YukonCoast_CTD_044; CA-Land_2017_YukonCoast_CTD_045; CA-Land_2017_YukonCoast_CTD_046; CA-Land_2017_YukonCoast_CTD_047; CA-Land_2018_YukonCoast; CA-Land_2018_YukonCoast_CTD_003; CA-Land_2018_YukonCoast_CTD_004; CA-Land_2018_YukonCoast_CTD_005; CA-Land_2018_YukonCoast_CTD_006; CA-Land_2019_YukonCoast_CTD_002; CA-Land_2019_YukonCoast_CTD_003; CA-Land_2019_YukonCoast_CTD_004; CA-Land_2019_YukonCoast_CTD_005; CA-Land_2019_YukonCoast_CTD_006; CA-Land_2019_YukonCoast_CTD_007; CA-Land_2019_YukonCoast_CTD_008; CA-Land_2019_YukonCoast_CTD_009; CA-Land_2019_YukonCoast_CTD_010; CA-Land_2019_YukonCoast_CTD_011; CA-Land_2019_YukonCoast_CTD_012; CA-Land_2019_YukonCoast_CTD_013; CA-Land_2019_YukonCoast_CTD_014; CA-Land_2019_YukonCoast_CTD_015; CA-Land_2019_YukonCoast_CTD_016; CA-Land_2019_YukonCoast_CTD_017; CA-Land_2019_YukonCoast_CTD_018; CA-Land_2019_YukonCoast_CTD_019; CA-Land_2019_YukonCoast_CTD_020; CA-Land_2019_YukonCoast_CTD_021; CA-Land_2019_YukonCoast_CTD_022; CA-Land_2019_YukonCoast_CTD_023; CA-Land_2019_YukonCoast_CTD_024; CA-Land_2019_YukonCoast_CTD_025; CA-Land_2019_YukonCoast_CTD_026; CA-Land_2019_YukonCoast_CTD_027; CA-Land_2019_YukonCoast_CTD_028; CA-Land_2019_YukonCoast_CTD_029; CA-Land_2019_YukonCoast_CTD_030; CA-Land_2019_YukonCoast_CTD_031; CA-Land_2019_YukonCoast_CTD_032; CA-Land_2019_YukonCoast_CTD_033; CA-Land_2019_YukonCoast_CTD_034; CA-Land_2019_YukonCoast_CTD_035; CA-Land_2019_YukonCoast_CTD_036; CA-Land_2019_YukonCoast_CTD_037; CA-Land_2019_YukonCoast_CTD_038; CA-Land_2019_YukonCoast_CTD_039; CA-Land_2019_YukonCoast_CTD_040; CA-Land_2019_YukonCoast_CTD_041; CA-Land_2019_YukonCoast_CTD_042; CA-Land_2019_YukonCoast_CTD_043; CA-Land_2019_YukonCoast_CTD_044; CA-Land_2019_YukonCoast_CTD_045; CA-Land_2019_YukonCoast_CTD_046; CA-Land_2019_YukonCoast_CTD_047; CA-Land_2019_YukonCoast_CTD_048; CA-Land_2019_YukonCoast_CTD_049; CA-Land_2019_YukonCoast_CTD_050; CA-Land_2019_YukonCoast_CTD_051; CA-Land_2019_YukonCoast_CTD_052; CA-Land_2019_YukonCoast_CTD_053; CA-Land_2019_YukonCoast_spring; CA-Land_2022_YukonCoast; CA-Land_2022_YukonCoast_CTD_001; CA-Land_2022_YukonCoast_CTD_002; CA-Land_2022_YukonCoast_CTD_003; CA-Land_2022_YukonCoast_CTD_004; CA-Land_2022_YukonCoast_CTD_005; CA-Land_2022_YukonCoast_CTD_006; CA-Land_2022_YukonCoast_CTD_007; CA-Land_2022_YukonCoast_CTD_008; CA-Land_2022_YukonCoast_CTD_009; CA-Land_2022_YukonCoast_CTD_010; CA-Land_2022_YukonCoast_CTD_011; CA-Land_2022_YukonCoast_CTD_012; CA-Land_2022_YukonCoast_CTD_013; CA-Land_2022_YukonCoast_CTD_014; CA-Land_2022_YukonCoast_CTD_015; CA-Land_2022_YukonCoast_CTD_016; CA-Land_2022_YukonCoast_CTD_017; CA-Land_2022_YukonCoast_CTD_018; CA-Land_2022_YukonCoast_CTD_019; CA-Land_2022_YukonCoast_CTD_020; CA-Land_2022_YukonCoast_CTD_021; CA-Land_2022_YukonCoast_CTD_022; CA-Land_2022_YukonCoast_CTD_023; CA-Land_2022_YukonCoast_CTD_024; CA-Land_2022_YukonCoast_CTD_025; CA-Land_2022_YukonCoast_CTD_026; CA-Land_2022_YukonCoast_CTD_027; CA-Land_2022_YukonCoast_CTD_028; CA-Land_2022_YukonCoast_CTD_029; CA-Land_2022_YukonCoast_CTD_030; CA-Land_2022_YukonCoast_CTD_031; CA-Land_2022_YukonCoast_CTD_032; CA-Land_2022_YukonCoast_CTD_033; CA-Land_2022_YukonCoast_CTD_034; CA-Land_2022_YukonCoast_CTD_035; CA-Land_2022_YukonCoast_CTD_036; CA-Land_2022_YukonCoast_CTD_037; CA-Land_2022_YukonCoast_CTD_038; CA-Land_2022_YukonCoast_CTD_039; CA-Land_2022_YukonCoast_CTD_040; CA-Land_2022_YukonCoast_CTD_041; CA-Land_2022_YukonCoast_CTD_042; CA-Land_2022_YukonCoast_CTD_043; CA-Land_2022_YukonCoast_CTD_044; CA-Land_2022_YukonCoast_CTD_045; CA-Land_2022_YukonCoast_CTD_046; CA-Land_2022_YukonCoast_CTD_047; CA-Land_2022_YukonCoast_CTD_048; CA-Land_2022_YukonCoast_CTD_049; CA-Land_2022_YukonCoast_CTD_050; CA-Land_2022_YukonCoast_CTD_051; CA-Land_2022_YukonCoast_CTD_052; CA-Land_2022_YukonCoast_CTD_053; CA-Land_2022_YukonCoast_CTD_054; CA-Land_2022_YukonCoast_CTD_055; CA-Land_2022_YukonCoast_CTD_056; CA-Land_2022_YukonCoast_CTD_057; CA-Land_2022_YukonCoast_CTD_058; CA-Land_2022_YukonCoast_CTD_059; CA-Land_2022_YukonCoast_CTD_060; CA-Land_2022_YukonCoast_CTD_061; CA-Land_2022_YukonCoast_CTD_062; CA-Land_2022_YukonCoast_CTD_063; CA-Land_2022_YukonCoast_CTD_064; CA-Land_2022_YukonCoast_CTD_065; CA-Land_2022_YukonCoast_CTD_066; CA-Land_2022_YukonCoast_CTD_067; CA-Land_2022_YukonCoast_CTD_068; CA-Land_2022_YukonCoast_CTD_069; CA-Land_2022_YukonCoast_CTD_070; CA-Land_2022_YukonCoast_CTD_071; CA-Land_2022_YukonCoast_CTD_072; CA-Land_2022_YukonCoast_CTD_073; CA-Land_2022_YukonCoast_CTD_074; CA-Land_2022_YukonCoast_CTD_075; CA-Land_2022_YukonCoast_CTD_076; CA-Land_2022_YukonCoast_CTD_077; CA-Land_2022_YukonCoast_CTD_078; CA-Land_2022_YukonCoast_CTD_079; CA-Land_2022_YukonCoast_CTD_080; CA-Land_2022_YukonCoast_CTD_081; CA-Land_2022_YukonCoast_CTD_082; CA-Land_2022_YukonCoast_CTD_083; CA-Land_2022_YukonCoast_CTD_084; CA-Land_2022_YukonCoast_CTD_085; CA-Land_2022_YukonCoast_CTD_086; CA-Land_2022_YukonCoast_CTD_087; CA-Land_2022_YukonCoast_CTD_088; CA-Land_2022_YukonCoast_CTD_089; CA-Land_2022_YukonCoast_CTD_090; CA-Land_2022_YukonCoast_CTD_091; CA-Land_2022_YukonCoast_CTD_092; CA-Land_2022_YukonCoast_CTD_093; CA-Land_2022_YukonCoast_CTD_094; CA-Land_2022_YukonCoast_CTD_095; CA-Land_2022_YukonCoast_CTD_096; CA-Land_2022_YukonCoast_CTD_097; CA-Land_2022_YukonCoast_CTD_098; CA-
    Type: Dataset
    Format: text/tab-separated-values, 71589 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Physical oceanography during RV MARIA S. MERIAN cruise MSM95 (2022)
    PANGAEA
    Details
    Publication Date: 2024-01-08
    Description: During the RV MARIA S. MERIAN cruise to the Svalbard Archipelago and the Fram Strait during September - October 2020 a SeaBird SBE 911Plus CTD was deployed at twelve different stations and various physical parameters were measured. The measured parameters and the respective sensor details were: Pressure (Paroscientific, Digiquartz), Temperature (2 x SBE 3, ITS-90 °C), Conductivity (2x SBE 4), Oxygen concentrations (2x SBE 43), Fluorescence (WET Labs ECO-AFL/FL) and Turbidity (WET LABS ECO).
    Keywords: Arctic Ocean, eastern part; CTD; CTD, SEA-BIRD SBE 911plus, SN 0935; CTD/Rosette; CTD-RO; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Event label; Fluorescence; Fluorometer, WET Labs ECO AFL/FL; FRAM; Fram Strait; FRontiers in Arctic marine Monitoring; GPF 19-2_05; Hausgarten; LATITUDE; LONGITUDE; Long-term Investigation at AWI-Hausgarten off Svalbard; Maria S. Merian; MSM95; MSM95_10-1; MSM95_1-1; MSM95_11-1; MSM95_17-1; MSM95_25-1; MSM95_26-1; MSM95_32-1; MSM95_36-1; MSM95_39-1; MSM95_41-1; MSM95_44-1; MSM95_6-1; MSM95_8-1; North Greenland Sea, Arctic Ocean; Oxygen; physical oceanography; Pressure, water; Salinity; Temperature, water; Turbidity (Nephelometric turbidity unit); Turbidity Meter, WET Labs ECO NTU
    Type: Dataset
    Format: text/tab-separated-values, 3434914 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Monosaccharide concentrations of particulate organic matter in samples collected during RV MARIA S. MERIAN cruise MSM95 to the Fram Strait, Arctic Ocean (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: During the Maria S. Merian cruise MSM95 to the Fram Strait in 2020, water samples were collected from nine stations using a CTD rosette sampler (SeaBird SBE 911Plus). Samples were collected at several depths. From each sample, 4 L of seawater was filtered onto a 0.7 µm GF/F filter using a peristaltic pump. The filters were immediately stored at -80 °C. From each of the filters, 2 x 11.2 mm circular pieces were removed and subject to acid hydrolysis (1 M HCI for 24 h at 100 °C). The aliquots were run in a speed vac before resuspension in MilliQ. Measurements of monosaccharides were obtained using High-performance anion exchange chromatography with pulsed amperometric detection along with standards.
    Keywords: Arabinose; Arctic; Arctic Ocean, eastern part; carbohydrates; Carbohydrates; Monosaccharides; CTD, Sea-Bird, SBE 911plus [SN: 09P66504-1072]; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; Event label; Fram Strait; Fucose; Galactosamine; Galactose; Glucosamine; Glucose; GPF 19-2_05; High-performance anion-exchange chromatography coupled with pulsed amperometric detection (ICS 3000, Dionex); Engel and Händel (2011); LATITUDE; LONGITUDE; Maria S. Merian; MSM95; MSM95_1-1; MSM95_11-1; MSM95_25-1; MSM95_26-1; MSM95_36-1; MSM95_41-1; MSM95_44-1; MSM95_6-1; MSM95_8-1; North Greenland Sea, Arctic Ocean; Xylose
    Type: Dataset
    Format: text/tab-separated-values, 134 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    Monosaccharide concentrations of particulate organic matter in samples collected during RV MARIA S. MERIAN cruise MSM95 to the Fram Strait, Arctic Ocean (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: During the Maria S. Merian cruise MSM95 to the Fram Strait in 2020, water samples were collected from nine stations using a CTD rosette sampler (SeaBird SBE 911Plus). Samples were collected at several depths. From each sample, 4 L of seawater was filtered onto a 0.7 µm GF/F filter using a peristaltic pump. The filters were immediately stored at -80 °C. From each of the filters, 2 x 11.2 mm circular pieces were removed and subject to acid hydrolysis (1 M HCI for 24 h at 100 °C). The aliquots were run in a speed vac before resuspension in MilliQ. Measurements of monosaccharides were obtained using High-performance anion exchange chromatography with pulsed amperometric detection along with standards.
    Keywords: Arabinose; Arctic; Arctic Ocean, eastern part; carbohydrates; Carbohydrates; Monosaccharides; CTD, Sea-Bird, SBE 911plus [SN: 09P66504-1072]; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; Event label; Fram Strait; Fucose; Galactosamine; Galactose; Glucosamine; Glucose; GPF 19-2_05; High-performance anion-exchange chromatography coupled with pulsed amperometric detection (ICS 3000, Dionex); Engel and Händel (2011); LATITUDE; LONGITUDE; Maria S. Merian; MSM95; MSM95_1-1; MSM95_11-1; MSM95_25-1; MSM95_26-1; MSM95_36-1; MSM95_41-1; MSM95_44-1; MSM95_6-1; MSM95_8-1; North Greenland Sea, Arctic Ocean; Xylose
    Type: Dataset
    Format: text/tab-separated-values, 134 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 5
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    Arctic Seafloor Integrity Cruise No. MSM95 – (GPF 19-2_05) (2021)
    In:  EPIC3
    Details
    Publication Date: 2021-07-05
    Description: The main aim of the MSM95 research expedition was to investigate and map physical impacts on the arctic seafloor in two distinct and contrasting Arctic areas (The Svalbard shelf edge and the HAUSGARTEN time series stations in the FRAM strait) with a range of research equipment. A ‘nested’ data approach was conducted in each research area, with broad seafloor mapping conducted initially with the R/V MARIA S. MERIAN onboard acoustic systems (The EM122 and EM712 bathymetric systems), followed by focused subsequent mapping conducted by PAUL 3000 automated underwater vehicle (AUV) sidescan and camera deployments, Ocean Floor Observation and Bathymetry System (OFOBS) towed sidescan and camera trawls and finally with very high resolution investigations conducted with a new mini-ROV launched directly from the OFOBS for close seafloor visual analysis. These data will be used to produce spatial distribution maps of iceberg and fishery impacts on the seafloor at three locations to the north, south and west of the Svalbard Archipelago, as well as maps of drop stone and topography variations across several of the HAUSGARTEN stations.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Miscellaneous , notRev
    Format: application/pdf
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  • 6
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    The Permafrost Carbon in the Beaufort Sea (PeCaBeau) Expedition of the Research Vessel CCGS AMUNDSEN (AMD2104) in 2021 (2022)
    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Berichte zur Polar- und Meeresforschung = Reports on polar and marine research, Bremerhaven, Alfred Wegener Institute for Polar and Marine Research, 759, 120 p., ISSN: 1866-3192
    Details
    Publication Date: 2022-03-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: "Berichte zur Polar- und Meeresforschung" , notRev
    Format: application/pdf
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  • 7
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    The footprint of permafrost carbon on the Canadian Beaufort Sea Shelf
    In:  EPIC3
    Details
    Publication Date: 2022-11-26
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 8
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    Seasonal, interannual and spatial patterns of bacterial taxonomy and genetic functions in the Arctic Ocean (2022)
    In:  EPIC318th Symposium of the International Society for Microbial Ecology (ISME18), Lausanne, Switzerland
    Details
    Publication Date: 2022-09-07
    Description: Bacterial diversity and function across time and space in the Arctic Ocean, including the Polar Night, remain virtually unknown. In the FRAM Observatory, we study microbial composition and genetic potential in ice-covered and ice-free regions of the Fram Strait, the major gateway between the Arctic and Atlantic Oceans. A continuous amplicon time-series, derived from moored autonomous samplers, revealed marked taxonomic and functional seasonality among bacterial communities in the ice-free West Spitsbergen Current, with distinct succession of taxonomic modules. PacBio long-read metagenomes showed peaks of proteorhodopsin- and DMSP-utilizing genes in late summer, whereas winter mixing of the water column covaried with ammonia- and nitrite-metabolizing bacterial genes. In the ice-covered East Greenland Current, taxonomic and functional diversity varied less with seasons, with prominent influence of ice cover and polar water masses. For instance, high-ice conditions coincided with higher number of peptidoglycan-utilizing genes. Continuous observations were contextualized with five-year amplicon data from summertime samples collected across Fram Strait, integrating seasonal and interannual patterns of bacterial community dynamics. This fundamental baseline information helps understanding ecological and biogeochemical processes in a marine region severely affected by climate change.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , NonPeerReviewed , info:eu-repo/semantics/conferenceObject
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  • 9
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    Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea (2022)
    In:  EPIC3EGU General Assembly 2022, Vienna, Austria, 2022-05-23-2022-05-27Tracing the footprint of permafrost carbon supply to the Canadian Beaufort Sea
    Details
    Publication Date: 2022-10-04
    Description: The Canadian Beaufort Sea receives large quantities of sediment, organic carbon and nutrients from rapid coastal erosion and permafrost degradation. In addition, the Mackenzie River, the largest North American Arctic river, discharges great amounts of freshwater, dissolved solids and suspended sediments to the Beaufort Sea. Current changes in these fluxes in response to the warming climate have uncertain consequences for the carbon budget on the shelf and in the deep ocean. To investigate the movement and transformation of organic matter along the land-ocean continuum, we collected water and surface sediment samples along five major transects across the Beaufort Sea during the 2021 expedition of the Canadian Coast Guard Ship Amundsen. Sampling locations span from shallow, coastal, sites with water depths ≤ 20 m, to shelf-break and deep-water settings on the continental slope (water depths of ≥1000 m). For this study, we use stable and radiocarbon isotopic (δ13C and Δ14C) analyses of dissolved inorganic (DIC), dissolved organic (DOC) and particulate organic carbon (POC) for surface and bottom waters, as well as surface sediments, in order to compare, contrast and constrain the relative source contributions and ages of these different forms of carbon. Our results will help to better understand the fate of permafrost organic matter in the marine environment and to ultimately improve assessments of the Canadian Beaufort Sea shelf as a carbon source or sink and its potential trajectory with ongoing environmental changes.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 10
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    Differential integration of members of marine mycoplankton communities into food webs and carbon cycling (2021)
    In:  EPIC3Aslo, online, 2021-06
    Details
    Publication Date: 2022-09-29
    Description: Marine fungi are prominent components of plankton communities, but to date little is known about how the different community members are integrated into trophic networks and whether fungal cell numbers/biomass reach a size that can be considered significant for the carbon cycling and food web chains. To shed light into this black box, we linked tag-sequencing based classification and CARD-FISH enumeration of mycoplankton communities sampled from a marine time series station in the North Sea in two successive studies and modeled fungal interactions with other plankton groups over complex weighted Topological Overlap (wTO) networks. The wTO analysis reported significant negative relationships for half of all fungal OTUs with phyto- and zooplankton groups, but also between fungi. Zoosporic fungi, including several newly identified clades, held a special position within the modeled food webs with highest numbers of connections. During the spring phytoplankton bloom, Rozellomycota zoospores reached values of 106 cells L-1 similar to what is reported for freshwater mycoloops. Furthermore, saprotrophic yeasts showed distant frequency patterns over the course of the year. At the end of the spring phytoplankton bloom, yeast cell number increased 11-fold within a week and reached biomass values with a maximum of 8.9 mg C m-3 comparable to values of filamentous fungi in the Chilean upwelling system. Our results suggest that marine mycoplankton is integrated into trophic networks over different planktonic interactions, causes trophic upgrading, and are part of the microbial loop.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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