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  • PANGAEA  (27)
  • American Physical Society (APS)
Collection
Keywords
Years
  • 1
    Publication Date: 2024-02-02
    Description: AWI's autonomous underwater vehicle "PAUL" covered two 10 km long transects in the Fram Strait on July 2nd / 3rd 2013 to investigate the physical-ecological coupling at an ice edge. The dive was orientated perpendicular to a meltwater front. The meltwater front was associated to a large ice tongue extending from the main ice edge. Every 800 - 1000 m, the vehicle ascended vertically from 50 m water depth to a minimal depth of 3 m to gather a high resolution profile of the following parameters: Temperature, Conductivity, Pressure, Chlorophyll a, CDOM, Dissolved Oxygen, Photosynthetically Active Radiation, and Nitrate. The dataset contains the data of the vertical ascends only. Due to the correction process, which takes into account the pitch angle of the vehicle, pump times, and the position of the respective instrument inside the vehicle, each parameter has an individual depth stamp.
    Keywords: Autonomous underwater vehicle; AUV; AWI_PhyOce; Brunt-Väisälä frequency; Chlorophyll a; Conductivity; DATE/TIME; Density, potential; Density, sigma, in situ; DEPTH, water; HAUSGARTEN 2013; LATITUDE; LONGITUDE; Maria S. Merian; MSM29; MSM29_440-5; Nitrate; North Greenland Sea; Organic matter, colored dissolved; Oxygen; Oxygen saturation; Oxygen solubility; Physical Oceanography @ AWI; Pressure, water; Radiation, photosynthetically active; Salinity; Salinity, absolute; Temperature, water; Temperature, water, conservative; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 67727 data points
    Location Call Number Expected Availability
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  • 2
    Publication Date: 2023-03-16
    Keywords: ARK-XXX/1.2; Autonomous underwater vehicle; AUV; AUV ID 038; AWI_PhyOce; Chlorophyll a; DATE/TIME; DEPTH, water; Fluorometer, Turner Design, C7-c; Fluorometer, Turner Design, C7-u; FRAM; FRontiers in Arctic marine Monitoring; Hausgarten; LATITUDE; LONGITUDE; Long-term Investigation at AWI-Hausgarten off Svalbard; MATLAB date; Nitrate; Nitrate sensor, SBE Deep SUNA; North Greenland Sea; Organic matter, colored dissolved; Original value; Oxygen; Oxygen saturation; Oxygen sensor, SBE 43; Physical Oceanography @ AWI; Polarstern; Pressure, water; Pressure sensor, Paroscientific; PS99/075-1; PS99.2; Pumped CTD (SBE 49 FastCAT); Radiation, photosynthetically active; Recalculated from ml/l by using (ml/l)*44.66; Salinity, absolute; Sensor for photosynthetically active radiation, Satlantic PAR-log-s; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 179327 data points
    Location Call Number Expected Availability
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  • 3
    Publication Date: 2023-03-17
    Keywords: ARK-XXX/1.2; Autonomous underwater vehicle; AUV; AUV ID 038; AWI_PhyOce; CTD, Sea-Bird, SBE 19plus; DATE/TIME; DEPTH, water; Fluorescence; FRAM; FRontiers in Arctic marine Monitoring; Hausgarten; LATITUDE; LONGITUDE; Long-term Investigation at AWI-Hausgarten off Svalbard; MATLAB date; North Greenland Sea; Physical Oceanography @ AWI; Polarstern; Pressure, water; PS99/075-1; PS99.2; Salinity; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 3500 data points
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  • 4
    Publication Date: 2023-03-16
    Description: AWI's autonomous underwater vehicle PAUL – Polar Autonomous Underwater Laboratory (AUV Bluefin 21) was deployed during R/V Polarstern cruise PS99.2 in central Fram Strait. The scientific payload included a pressure sensor (Paroscientific Inc.), a pumped CTD (SBE 49 FastCAT), a dissolved oxygen sensor (SBE 43), a nitrate sensor (SBE Deep SUNA), two fluorometers for chlorophyll a and colored dissolved organic matter (Turner Design C7-c and C7-u), an upward looking sensor for photosynthetically active radiation (PAR, Satlantic PAR-log-s), shear and temperature microstructure profiler (MSP) from Rockland Scientific Inc., and an 300 kHz RDI acoustic Doppler current profiler (AADCP, AUV based Acoustic Doppler Current Profiler). Additionally the vehicle carried a water sample collector to gather a maximum number of 22 samples with a volume of 220 ml each. The AUV conducted high resolution profiles between the surface and 50 m water depth. Between the profiles the AUV was diving along constant depth for a few hundred meters to allow for ADCP measurements of the water column above. A small CTD SBE 19plus was deployed manually from a Zodiac driving in parallel to the AUV track.
    Keywords: ARK-XXX/1.2; Autonomous underwater vehicle; AUV; AUV ID 038; AWI_PhyOce; FRAM; FRontiers in Arctic marine Monitoring; Hausgarten; Long-term Investigation at AWI-Hausgarten off Svalbard; North Greenland Sea; Physical Oceanography @ AWI; Polarstern; PS99/075-1; PS99.2
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 5
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    PANGAEA
    In:  Supplement to: Hoffmann, Ralf; Al-Handal, Adil Yousif; Wulff, Angela; Deregibus, Dolores; Zacher, Katharina; Quartino, Maria Liliana; Wenzhöfer, Frank; Braeckman, Ulrike (2019): Implications of Glacial Melt-Related Processes on the Potential Primary Production of a Microphytobenthic Community in Potter Cove (Antarctica). Frontiers in Marine Science, 6, https://doi.org/10.3389/fmars.2019.00655
    Publication Date: 2023-02-23
    Description: The Antarctic Peninsula experiences a fast retreat of glaciers, which correlates with an increased release of particles and related increased sedimentation and thus, a decrease in the available light for benthic primary production. We investigated how changes in the general sedimentation and shading patterns affect the primary production by benthic microalgae, the microphytobenthos. In order to determine potential net primary production and respiration of the microphytobenthic community, sediment cores from locations exposed to different sedimentation rates and shading were exposed to photosynthetic active radiation (PAR, 400–700 nm) of 0–70 µmol photons m-2 s-1. Total oxygen fluxes and microphytobenthic diatom community structure, density, and biomass were determined. Our study revealed that the net primary production of the microphytobenthos decreased with increasing sedimentation and shading, while the microphytobenthic diatom density and composition remained similar. By comparing our experimental results with in situ measured PAR intensities, we furthermore assessed the microphytobenthic primary production as an important carbon source within Potter Cove's benthic ecosystem. We propose that the microphytobenthic contribution to the total primary production may drop drastically due to Antarctic glacial retreat and correlated sedimentation and shading, with yet unknown consequences for the benthic heterotrophic community, its structure, and diversity.
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 6
    Publication Date: 2023-07-09
    Keywords: Achnanthes bongrain; Achnanthes bongrain, biomass as carbon; Actinocyclus actinochilus; Actinocyclus actinochilus, biomass as carbon; Amphora gourdonii; Amphora gourdonii, biomass as carbon; Amphora holsatica; Amphora holsatica, biomass as carbon; Amphora marina; Amphora marina, biomass as carbon; Amphora sp.; Amphora sp., biomass as carbon; Asteromphalus parvulus; Asteromphalus parvulus, biomass as carbon; Biremis sp.; Biremis sp., biomass as carbon; Cocconeis costata; Cocconeis costata, biomass as carbon; Cocconeis imperatrix; Cocconeis imperatrix, biomass as carbon; Cocconeis matsii; Cocconeis matsii, biomass as carbon; Cocconeis orbicularis; Cocconeis orbicularis, biomass as carbon; Cocconeis pottercovei; Cocconeis pottercovei, biomass as carbon; Cocconeis schuettii; Cocconeis schuettii, biomass as carbon; Corethron pennatum; Corethron pennatum, biomass as carbon; DATE/TIME; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Diploneis smithii; Diploneis smithii, biomass as carbon; DIVER; Elevation of event; Elevation of event 2; Entomoneis gigantea; Entomoneis gigantea, biomass as carbon; Entomoneis kjellmanii; Entomoneis kjellmanii, biomass as carbon; Entomoneis paludosa; Entomoneis paludosa, biomass as carbon; Entopyla ocellata; Entopyla ocellata, biomass as carbon; Event label; Fragilariopsis cylindrus; Fragilariopsis cylindrus, biomass as carbon; Gyrosigma arcuatum; Gyrosigma arcuatum, biomass as carbon; Gyrosigma fasciola; Gyrosigma fasciola, biomass as carbon; Gyrosigma obscurum; Gyrosigma obscurum, biomass as carbon; Latitude of event; Licmophora antarctica; Licmophora antarctica, biomass as carbon; Licmophora decora; Licmophora decora, biomass as carbon; Longitude of event; Lyrella abrupta; Lyrella abrupta, biomass as carbon; Navicula cancellata; Navicula cancellata, biomass as carbon; Navicula directa; Navicula directa, biomass as carbon; Navicula perminuta; Navicula perminuta, biomass as carbon; Nitzschia angularis; Nitzschia angularis, biomass as carbon; Nitzschia hybrida; Nitzschia hybrida, biomass as carbon; Odontella litigiosa; Odontella litigiosa, biomass as carbon; Parlibellus delognei; Parlibellus delognei, biomass as carbon; Petroneis plagiostoma; Petroneis plagiostoma, biomass as carbon; Petroneis sp.; Petroneis sp., biomass as carbon; Pinnularia quadratarea; Pinnularia quadratarea, biomass as carbon; Pleurosigma strigosum; Pleurosigma strigosum, biomass as carbon; Porosira glacialis; Porosira glacialis, biomass as carbon; PotterCove_Creek_2016-L; PotterCove_Creek_2016-S; PotterCove_Faro_2016-L; PotterCove_Faro_2016-S; PotterCove_Isla_D_2016-L; PotterCove_Isla_D_2016-S; Potter Cove, King George Island, Antarctic Peninsula; Pseudogomphonema kamtschaticum; Pseudogomphonema kamtschaticum, biomass as carbon; Replicate; Rhabdonema arcuatum; Rhabdonema arcuatum, biomass as carbon; Sampling by diver; Shannon Diversity Index; Site; Surirella sp.; Surirella sp., biomass as carbon; Synedropsis fragilis; Synedropsis fragilis, biomass as carbon; Thalassiosira gravida; Thalassiosira gravida, biomass as carbon; Thalassiosira maculata; Thalassiosira maculata, biomass as carbon; Thalassiosira sp.; Thalassiosira sp., biomass as carbon; Thalassiosira tumida; Thalassiosira tumida, biomass as carbon; Trachyneis aspera; Trachyneis aspera, biomass as carbon
    Type: Dataset
    Format: text/tab-separated-values, 1212 data points
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  • 7
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    PANGAEA
    In:  Supplement to: Karlberg, Maria; Wulff, Angela (2012): Impact of temperature and species interaction on filamentous cyanobacteria may be more important than salinity and increased pCO2 levels. Marine Biology, 160(8), 2063-2072, https://doi.org/10.1007/s00227-012-2078-3
    Publication Date: 2023-07-07
    Description: A future business-as-usual scenario (A1FI) was tested on two bloom-forming cyanobacteria of the Baltic Proper, Nodularia spumigena and Aphanizomenon sp., growing separately and together. The projected scenario was tested in two laboratory experiments where (a) interactive effects of increased temperature and decreased salinity and (b) interactive effects of increased temperature and elevated levels of pCO2 were tested. Increased temperature, from 12 to 16 °C, had a positive effect on the biovolume and photosynthetic activity (F v/F m) of both species. Compared when growing separately, the biovolume of each species was lower when grown together. Decreased salinity, from 7 to 4, and elevated levels of pCO2, from 380 to 960 ppm, had no effect on the biovolume, but on F v/F m of N. spumigena with higher F v/F m in salinity 7. Our results suggest that the projected A1FI scenario might be beneficial for the two species dominating the extensive summer blooms in the Baltic Proper. However, our results further stress the importance of studying interactions between species.
    Keywords: Alkalinity, total; Aphanizomenon sp.; Bacteria; Baltic Sea; Bicarbonate ion; Biovolume; Bottles or small containers/Aquaria (〈20 L); Calculated using CO2SYS; Carbonate ion; Carbon dioxide; Cyanobacteria; Growth/Morphology; Laboratory experiment; Laboratory strains; Maximum photochemical quantum yield of photosystem II; Nodularia spumigena; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Phytoplankton; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Salinity; Single species; Temperature; Temperature, water; Time point, descriptive; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 1930 data points
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  • 8
    Publication Date: 2024-02-17
    Description: During 4 expeditions to Potter Cove, King George Island, Antarctica (Carlini base: February-March 2015, September 2015, December 2015 and December 2016), benthic chambers were deployed in situ at three locations with differing glacial melt impact (Faro, Isla D, Creek) to measure total oxygen exchange at the sediment-water interface. Dark chambers measured community respiration, while light chambers measured net community metabolism. Sediment parameters were measured in the top 5 cm at the same location as the benthic chambers (sediment physico-chemical parameters, as well as prokyarotic and meiobenthic density and biomass; density and biomass of macrobenthos and of the large burrowing bivalve Laternula elliptica were measured separately). A detailed record of climatology, meteorology and oceanography of Potter Cove over the entire period spanning between the first (February 2015) and last (December 2016) benthic chamber deployment is also provided.
    Keywords: Antarctic; Benthos; biogeochemistry; El Niño; glacial melt; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; la Niña; Microphytobenthos; Oxygen; seasonal; sediments
    Type: Dataset
    Format: application/zip, 15 datasets
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  • 9
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    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Publication Date: 2024-02-02
    Keywords: Autonomous underwater vehicle; AUV; Carbon dioxide, partial pressure; DATE/TIME; DEPTH, water; Hausgarten; HAUSGARTEN 2013; HydroC pCO2 sensor, CONTROS; LATITUDE; LONGITUDE; Long-term Investigation at AWI-Hausgarten off Svalbard; Maria S. Merian; MSM29; MSM29_440-5; North Greenland Sea
    Type: Dataset
    Format: text/tab-separated-values, 20634 data points
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  • 10
    Publication Date: 2024-02-27
    Keywords: Arctic; Conductivity; CTD; CTD, Sea-Bird SBE 911plus; CTD, SEA-BIRD SBE 911plus, SN 2939; CTD, SEA-BIRD SBE 911plus, SN 4456; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Event label; Fluorescence, chlorophyll; Fluorometer, WET Labs ECO AFL/FL; FRAM; FRontiers in Arctic marine Monitoring; Greenland Sea; Hausgarten; Latitude of event; Longitude of event; Long-term Investigation at AWI-Hausgarten off Svalbard; Maria S. Merian; Micro-ARC; MSM77; MSM77_12-1; MSM77_13-1; MSM77_13-4; MSM77_15-2; MSM77_17-1; MSM77_19-1; MSM77_22-1; MSM77_24-1; MSM77_29-1; MSM77_3-1; MSM77_3-2; MSM77_36-1; MSM77_37-1; MSM77_40-1; MSM77_41-1; MSM77_4-3; MSM77_44-1; MSM77_45-1; MSM77_4-6; MSM77_46-4; MSM77_47-1; MSM77_48-1; MSM77_49-1; MSM77_49-10; MSM77_49-11; MSM77_49-12; MSM77_49-13; MSM77_49-14; MSM77_49-15; MSM77_49-16; MSM77_49-17; MSM77_49-18; MSM77_49-19; MSM77_49-2; MSM77_49-20; MSM77_49-21; MSM77_49-22; MSM77_49-23; MSM77_49-24; MSM77_49-25; MSM77_49-26; MSM77_49-27; MSM77_49-28; MSM77_49-29; MSM77_49-3; MSM77_49-30; MSM77_49-31; MSM77_49-32; MSM77_49-33; MSM77_49-4; MSM77_49-5; MSM77_49-6; MSM77_49-7; MSM77_49-8; MSM77_49-9; MSM77_52-1; MSM77_53-1; MSM77_53-3; MSM77_54-1; MSM77_6-1; MSM77_8-1; Number of observations; Oxygen; Oxygen sensor, SBE 43; PAR sensor, biospherical, LI-COR Inc.; Pressure, water; Radiation, photosynthetically active; Radiation, photosynthetically active, surface; Salinity; Temperature, water; Turbidity (Nephelometric turbidity unit); Turbidity Meter, WET Labs ECO NTU; Understanding the links between pelagic microbial ecosystems and organic matter cycling in the changing Arctic (μARC)
    Type: Dataset
    Format: text/tab-separated-values, 333807 data points
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