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  • Other Sources  (5)
  • Institut für Meereskunde  (5)
  • 1990-1994  (4)
  • 1985-1989  (1)
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  • Other Sources  (5)
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  • 1
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    Schwankungen des Wärmeinhalts der Warmwassersphäre im Nordatlantik : Meßprogramm 1984-1986 (1988)
    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 181 . Institut für Meereskunde, Kiel, Germany, 35 pp.
    Details
    Publication Date: 2014-10-14
    Type: Report , NonPeerReviewed
    Format: text
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  • 2
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    A moared array along the southern boundary of the Brazil Basin for the Deep Basin Experiment - Report on a joint experiment 1991-1992 (1994)
    Institut für Meereskunde
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 243 . Institut für Meereskunde, Kiel, Germany, 107 pp.
    Details
    Publication Date: 2016-10-11
    Description: The Deep Basin Experiment (DBE) is an international effort and apart of the World Ocean Circulation Experiment with the principal objective of improving our knowledge of the subthermocline circulation. The DBE fieldwork is focussed on the Brazil Basin and this report is concemed with a moored array situated along its southem boundary which was installed in early 1991 to measure the inflow and outflow to the Basin and to investigate the Brazil Current near 30S. This moored array was a joint undertaking by the Institut für Meereskunde of the University of Kiel and the Woods Hole Oceanographic Institution. Moorings were deployed on Meteor Cruise 15, leg I and retrieved on Meteor cruise 22, legs 3 and 4. A total of 57 conventional current meters and two Acoustic Doppler Current Profilers were set on 13 moarings with some concentration within the Brazil Current and the Vema Channel. CTDs were taken at each mooring site as well as in between. Some of the recovered instruments were reset in the Hunter Channel, a suspected additional connection between the Argentine Basin and the Brazil Basin. A later report will summarize this data after it is recovered in May 1994.
    Type: Report , NonPeerReviewed
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  • 3
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    Availability of nutrients to a deep-sea benthic microbial community : results from a ship-board experiment (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-08
    Description: Intact sediment cores from the Vøring-Plateau (Norwegian Sea) were incubated under in situ temperature on board ship with and without the addition of natural detritus to follow the reaction of deep-sea benthic microbial communities to nutrient enrichment. Concentration and enzymatic decomposition of organic material, total microbial number, biomass and production were followed in timecourse experiments. The addition of decomposable organic material caused an immediate stimulation of microbial metabolic processes: following the induction of enzymatic activity, microbial biomass production increased. During the initial period of incubation metabolic processes were also stimulated in the untreated "control" sediments. This "incubation effect" competed with the "feeding effect" caused by the enrichment with organic material.
    Type: Article , NonPeerReviewed
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  • 4
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    Observation on the microbial incorporation of thymidine and leicine in marine sediments (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-08
    Description: The simultaneous incorporation of radiolabelled thymidine and leucine was followed in intact muddy sand sediments from the North Sea. As it could be shown, incorporation activities covaried over sediment depth. Parallel analysis of the enzymatic decomposition of organic material (by means of the hydrolysis of fluoresceindiacetate) revealed that stimulations of microbial biomass production coincided with stimulations of enzymatic activities although maxima of both processes occurred at different sediment depths.
    Type: Article , NonPeerReviewed
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  • 5
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    Fine-scale distribution of hydrolytic activity associated with foraminiferans and bacteria in deep-sea sediments of the Norwegian-Greenland Sea (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-08
    Description: Pronounced fine-scale gradients of enzymatic degradation of organic material were observed in the uppermost horizons of deep-sea sediments of the Norwegian-Greenland Sea. Since these gradients coincided with the occurrence of dense populations of epibenthic agglutinated foraminiferans, it was hypothesized that the foraminiferans were the main contributors to the large pool of hydrolytic enzymes observed. Parallel analyses of the enzymatic activity associated with individual foraminiferans selected from the sediments confirmed this hypothesis. Measurements of bacterial biomass (by epifluorescence microscopy) and production (incorporation of tritiated leucine) suggest that in the specific ecological situation analysed, bacteria benefit from the metabolism of foraminiferans rather than being the main decomposers. The immediate degradation at the sediment surface without incorporation of the sedimented particles into the sediment may have an impact on the early diagenesis of organic material and its sedimentary record in these deep-sea sediments.
    Type: Article , NonPeerReviewed
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