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Datasets with PANGAEA technical keyword @geomar

Mostrando recursos 1 - 20 de 4.215

  1. Swath sonar multibeam EM122 bathymetry during SONNE cruise SO243 with links to raw data files

    Marandino, Christa A

  2. Raw multibeam EM122 data: transits of METEOR cruise M132 (South Atlantic)

    Jochumsen, Kerstin; Wölfl, Anne-Cathrin

  3. Source code for the Compact Morphology-based Nodule Delineation (CoMoNoD) algorithm

    Schoening, Timm
    This is the demonstration code for the "Compact Morphology-based Nodule Delineation" (CoMoNoD) algorithm. CoMoNoD is a rapid method to delineate poly-metallic (or manganese) nodules from vertical benthic images. The paper describing the algorithm is currently under review. This algorithm makes extensive use of the OpenCV library for image processing and uses NVIDIA CUDA for computational speedup.

  4. Simulation of leatherback turtle hatchling dispersion patterns in the Gulf of Guinea

    Scott, Rebecca; Biastoch, Arne; Agamboue, Pierre D; Bayer, Till; Boussamba, Francois L; Formia, Angela; Godley, Brendan J; Mabert, Brice D K; Manfoumbi, Jean C; Schwarzkopf, Franziska; Sounguet, Guy-Philippe; Wagner, Patrick; Witt, Matthew J
    This data set describes the location of virtual floats representing turtle hatchlings throughout 60 modeled years. Floats were constrained to remain within depths of 0-6 m due to the positive buoyancy of hatchlings. Floats were first assigned to one of 20,000 random release locations within a large release area 125-400 km offshore from nesting beaches throughout the Republic/Democratic Republic of the Congo, Gabon and Equatorial Guinea spanning latitudes of c. 6°S to 3.5°N. For each month over the 4-month long hatching season (January-April), each of the 20,000 floats was assigned a random release day and drift simulations ran every year...

  5. Stomach content data of the orangeback squid Sthenoteuthis pteropus from samples of METEOR cruises M116, M119 and Maria S. Merian cruise MSM49

    Merten, Veronique

  6. Stable isotope data of the orangeback squid Sthenoteuthis pteropus from samples of Maria S. Merian cruise MSM49

    Merten, Veronique

  7. Stomach content and stable isotope data of the orangeback squid Sthenoteuthis pteropus from samples of METEOR cruises M116, M119 and Maria S. Merian cruise MSM49

    Merten, Veronique
    In the eastern tropical Atlantic, the orangeback flying squid Sthenoteuthis pteropus (Steenstrup 1855) (Cephalopoda, Ommastrephidae) is a dominant species of the epipelagic nekton community. This squid is a short-living carnivore and one of the fastest-growing squids. Its trophic ecology is poorly understood. We characterise the role of S. pteropus in the pelagic food web of the eastern tropical Atlantic by investigating its diet and the dynamics of its feeding habits during ontogeny and migration. During three expeditions in the eastern tropical Atlantic in 2015, 129 specimens were caught by hand jigging. Stomach content analysis (via visual identification and DNA barcoding) was...

  8. Experiment on occurrence of S-postures of Atlantic herring larvae (Clupea harengus L.)

    Maneja, Rommel H; Clemmesen, Catriona

  9. Experiment on kinematics of swimming behavior of Atlantic herring larvae (Clupea harengus L.)

    Maneja, Rommel H; Clemmesen, Catriona

  10. Experiment on swimming kinematics and foraging behaviour of Atlantic herring larvae (Clupea harengus L.)

    Maneja, Rommel H; Frommel, Andrea Y; Browman, Howard I; Geffen, Audrey J; Folkvord, Arild; Piatkowski, Uwe; Durif, Caroline M F; Bjelland, Reidun; Skiftesvik, Anne Berit; Clemmesen, Catriona
    Data on kinematics of swimming behavior of Atlantic herring larvae cultured in the laboratory under three pCO2 conditions (control - 370, medium - 1800, and high - 4200 µatm) were extracted at 34 days post-hatch (dph) from swim path recordings obtained using silhouette video photography. The swim paths were analyzed for move duration, speed and length, stop duration, and horizontal and vertical turn angles to determine the effects of elevated pCO2 on fish larval behavior.

  11. Modeled and Measured salinity, oxygen and derived cod egg survival data for the Arkona Basin and the Bornholm Basin in the Baltic Sea

    von Dewitz, Burkhard; Hinrichsen, Hans-Harald; Höflich, Katharina; Tamm, Susanne
    This data set contains several tables with modeled and measured data and also correlations coefficient data used in the publication. The model data are aggregations of areas in the Arkona Basin (AB) and Bornholm Basin (BB) from the Kiel Baltic Sea Ice and Ocean model (BSIOM) for the period 1971 to 2015. See the puplication for details about horizontal aggregation. Raw Data of the Model is not included in this data deposition, but are given by the authors upon request and when credited in any use of the data. Monthly Means of the AB and BB are used for detailed correlation analysis...

  12. Ct, number of cells and grazing rate of Rhodomonas balthica, Isochrysis galbana and Thalassiosira weissflogii in Acartia tonsa gut content after grazing experiment

    Ismar, Stefanie M; Kottmann, Johanna; Sommer, Ulrich

  13. Cell counts of Rhodomonas balthica, Isochrysis galbana and Thalassiosira weissflogii in Acartia tonsa gut content after grazing experiment

    Ismar, Stefanie M; Kottmann, Johanna; Sommer, Ulrich

  14. Growth parameters of European sea bass post-larvae (Dicentrarchus labrax) after PHB administration

    Franke, Andrea; Clemmesen, Catriona; De Schryver, Peter; Garcia-Gonzalez, Linsey; Miest, Joanna; Roth, Olivia

  15. Gene expression of European sea bass post-larvae (Dicentrarchus labrax) after PHB administration

    Franke, Andrea; Clemmesen, Catriona; De Schryver, Peter; Garcia-Gonzalez, Linsey; Miest, Joanna; Roth, Olivia

  16. Survival of European sea bass post-larvae (Dicentrarchus labrax) after PHB administration

    Franke, Andrea; Clemmesen, Catriona; De Schryver, Peter; Garcia-Gonzalez, Linsey; Miest, Joanna; Roth, Olivia

  17. Grazing experiment with Acartia tonsa

    Ismar, Stefanie M; Kottmann, Johanna; Sommer, Ulrich

  18. Gene expression, growth and survival of European sea bass post-larvae (Dicentrarchus labrax) after PHB administration

    Franke, Andrea; Clemmesen, Catriona; De Schryver, Peter; Garcia-Gonzalez, Linsey; Miest, Joanna; Roth, Olivia
    The stable production of high quality fry in marine aquaculture is still hampered by unpredictable mortality caused by infectious diseases during larval rearing. Consequently, the development of new biocontrol agents is crucial for a viable aquaculture industry. The bacterial energy storage compound poly-ß-hydroxybutyrate (PHB) has been shown to exhibit beneficial properties on aquatic organisms such as enhanced survival, growth, disease resistance and a controlling effect on the gastrointestinal microbiota. However, the effect of PHB on the developing immune system of fish larvae has so far not been investigated. In the present study, the effect of feeding PHB-enriched Artemia nauplii on...

  19. Particle export fluxes to the oxygen minimum zone of the eastern tropical North Atlantic

    Engel, Anja; Wagner, Hannes; Le Moigne, Frédéric A C; Wilson, Samuel T
    In the ocean, sinking of particulate organic mat- ter (POM) drives carbon export from the euphotic zone and supplies nutrition to mesopelagic communities, the feeding and degradation activities of which in turn lead to export flux attenuation. Oxygen (O2) minimum zones (OMZs) with suboxic water layers (< 5 µmol O2 kg-1 ) show a lower carbon flux attenuation compared to well- oxygenated waters (> 100 µmol O2 kg-1), supposedly due to reduced heterotrophic activity. This study focuses on sinking particle fluxes through hypoxic mesopelagic waters (< 60 µmol O2 kg-1); these represent about 100 times more ocean volume globally compared...

  20. RAFOS Float Data in the Northeast Atlantic 1997-2003 from the SFB460 Project

    Lankhorst, Matthias; Nielsen, Martina; Zenk, Walter
    This data collection contains RAFOS float trajectories from the Northeast Atlantic, in and around the Iceland Basin, collected at depths of 1500 m and 2600 m. The data are from the time period 1997-2003 and were collected as part of the project "Sonderforschungsbereich 460 (SFB460)", funded by the German "Deutsche Forschungsgemeinschaft". The data are presented in two versions: one version contains the full time series with possible gaps in the trajectories whenever the RAFOS tracking system was unavailable, and the other version has gaps removed/interpolated and has been subjected to a smoothing filter. Further details are available in a report...

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