Beitrag zur quantitativen Verteilung mariner und "terrestrischer" Bakterien im Wasser und in Sedimenten der Deutschen Bucht
Weyland, H. (1967). Beitrag zur quantitativen Verteilung mariner und "terrestrischer" Bakterien im Wasser und in Sedimenten der Deutschen Bucht. Helgol. Wiss. Meeresunters. 15(1-4): 226-242. https://dx.doi.org/10.1007/BF01618626
In: Helgoländer Wissenschaftliche Meeresuntersuchungen. Biologische Anstalt Helgoland: Hamburg. ISSN 0017-9957, meer
Ook verschenen in:Kinne, O.; Aurich, H. (Ed.) (1967). Vorträge und Diskussionen. Erstes Europäisches Symposion über Meeresbiologie = Papers and discussions. First European Symposium on Marine Biology = Rapports et discussions. Premier symposium européen sur biologie marine. European Marine Biology Symposia, 1. Helgoländer Wissenschaftliche Meeresuntersuchungen, 15(1-4). 669 pp., meer
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| Abstract |
Employing three different culture methods the population densities of heterotrophic bacteria were assessed in the free water (150 to 1500 bacteria/ml) and the upper sediment layers (6000 to 6500000 bacteria/cm3). The data were collected at 8 stations in the southern North Sea. Cultivation in fresh water agar, generally revealed only fractions (below 10%) of these bacteria numbers. Within the geographical range studied bacteria numbers did not vary as a function of the station distance from the mainland. In contrast to the results obtained on marine bacteria, the reproduction rate of fresh water bacteria seems to be suppressed especially severely, if these occur in very low cell densities in the sea water. |
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