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  • Berlin : Springer  (2)
  • ASLO (Association for the Sciences of Limnology and Oceanography)  (1)
  • Biologische Anstalt Helgoland  (1)
  • 1
    Keywords: Marine microbiology ; Microbial ecology ; Brackish water ecology ; Water microbiology ; Brackish water biology ; Microbial ecology ; Aufsatzsammlung ; Mikroorganismus ; Brackwasser ; Brackwasser ; Mikroorganismus
    Type of Medium: Book
    Pages: XI, 291 S. , graph. Darst.
    ISBN: 3540084924 , 0387084924
    Series Statement: Ecological studies 25
    DDC: 576/.19/2
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    Language: English
    Note: Literaturangaben
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  • 2
    Keywords: Aufsatzsammlung ; Ostsee ; Meereskunde ; Ostsee ; Meereskunde
    Description / Table of Contents: Klappentext: Die Ostsee als eines der größten Brackwassermeere der Welt ist immer noch gefährdet, sie wird weiter durch Abwässer und Abfälle belastet, die Wasserdurchmischung ist begrenzt. Um dieses noch junge Meer als Lebensraum zu erhalten, ist eine umfassende Analyse und ein ständiges Überwachen der ozeanographischen und ökologischen Parameter dringend nötig. Renommierte Forscher der größten Ostseeinstitute beschreiben in dieser Meereskunde der Ostsee alle wesentlichen Aspekte, die das Ökosystem Ostsee ausmachen, wie Klima, Geologie, Physik, Chemie, Pflanzen, Tiere, industrielle Nutzung und Belastung sowie mögliche Schutzmaßnahmen. Auch der Ostseeliebhaber wird in diesem leichtverständlichen Buch mit den zahlreichen Abbildungen zu seinen Beobachtungen auf See und am Strand wertvolle Hintergrundinformationen finden.
    Type of Medium: Book
    Pages: XI, 338 S. , Ill., graph. Darst.
    Edition: 2. Aufl.
    ISBN: 3540593519 , 9783540593515
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    Language: German
    Note: 1. Aufl. ersch. 1974 u.d.T.: Meereskunde der Ostsee / hrsg. von Lorenz Magaard , Literaturverz. S. [321] - 334
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  • 3
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    ASLO (Association for the Sciences of Limnology and Oceanography)
    In:  Limnology and Oceanography, 37 (6). pp. 1146-1163.
    Publication Date: 2018-03-20
    Description: Denitrification was investigated in the Baltic proper at two stations with different conditions in the deep water. The Gotland Deep was examined as an example of a basin with anoxic, H2S‐containing deep water and station T was taken as an example of low‐oxygen (〈0.2 ml liter−1), sulfide‐free deep water. Denitrification was measured by the acetylene blockage method; in addition, N2O reduction was followed in samples without acetylene. To shed light on the factors limiting denitrification, we compared in situ rates to denitrification after adding nitrate or electron donors. Denitrification was restricted to the layer of the oxic‐anoxic interface in the Gotland Deep and to the water layer near the sediment of station T. For both stations it could be shown that denitrification was not limited by nitrate availability. A lack of available organic C seemed to limit denitrification rates and growth of denitrifiers. As a result of C limitation in the water column, denitrification was restricted to energy‐rich interfaces. In the low‐oxygen water away from energy‐rich interfaces, the less C‐demanding nitrification‐denitrification coupling (NH4+ → N2O → N2) seemed to be favored. Denitrification in the water of the central Baltic seems to be subjected to strong variability due to changing C supply during the course of the year. However, limitation by C availability can be assumed for most of the year and should be taken into account in calculating the N budget of the Baltic.
    Type: Article , PeerReviewed
    Format: text
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  • 4
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    Biologische Anstalt Helgoland
    In:  Helgoländer Wissenschaftliche Meeresuntersuchungen, 15 (1-4). pp. 243-252.
    Publication Date: 2019-01-21
    Description: Ammonia, nitrite and nitrate were regularly estimated at several stations in the Kieler Bucht (western Baltic Sea) since November 1964. There are considerable seasonal changes in the contents of these 3 nitrogen compounds with impressive maxima of nitrite and nitrate in February or at the beginning of March. The great increase of nitrite and nitrate during the winter and also a smaller increase in summer are mainly caused by oxidation of ammonia, first to nitrite and then to nitrate, by nitrifying bacteria. In consequence chemoautotrophic nitrite- and nitratebacteria could be found in the water as well as in sediments all over the Kieler Bucht and also in the North Sea around the isle of Helgoland. These nitrifying bacteria are able to oxidize ammonia or nitrite in salinity conditions typical for the western Baltic Sea and the North Sea.
    Type: Article , PeerReviewed
    Format: text
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