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  • Bornträger  (1)
  • Springer  (1)
  • Kiel : Institut für Meereskunde
  • 1965-1969  (2)
Document type
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Helgoland marine research 15 (1967), S. 589-601 
    ISSN: 1438-3888
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung 1. Viele Tintinnenarten sind kosmopolitisch verbreitet. Gebiete des Weltmeeres mit ähnlichen Lebensbedingungen beherbergen gleiche Tintinnen. Sie leben in der lichtdurchfluteten Zone des Meeres, wo das Angebot an Nahrung am größten ist. Tägliche vertikale Wanderungen wurden nachgewiesen. 2. Die jahreszeitliche Verbreitung richtet sich nach der geographischen Breite. Bei der ozeanischen Wetterschiffstation India liegt das Maximum mit 4 000 000 Exemplaren unter 1 m2 im Mai bis Juli; das entspricht einer Biomasse von etwa 300 mm3. 3. Der begrenzende Faktor für die Entwicklung und Verbreitung von Tintinnen ist vor allem die Wassertemperatur. Der Einfluß von Salzgehalt und Sauerstoffsättigung ist offensichtlich weniger bedeutsam. 4. Die Nahrung der Tintinnen besteht aus Detritus, Bakterien, nackten Flagellaten, Coccolithophoriden, Peridineen, Diatomeen und Silicoflagellaten. Die Tintinnen selbst werden von Euphausiaceen, Copepoden, Tunicaten und Fischlarven gefressen. 5. Tintinnen bilden eines der ersten Glieder in der Nahrungskette. Man sollte in Zukunft dieser interessanten Giliatengruppe bei produktionsbiologischen Untersuchungen mehr Beachtung schenken.
    Notes: Abstract Tintinnids are shell building Protozoa regarded as heterotrich ciliates. Most of them are marine; less than 2% of the 800 known species occur in fresh water. Tintinnids live almost exclusively free-swimming pelagic and occur at all latitudes, in all seas, predominantly in the upper illuminated water layers. Their geographical distribution is primarily controlled by temperature and so is their development; salinity and oxygen seem of little importance. Tintinnids are one of the first links in the food chain. They feed on detritus, bacteria, naked flagellates, coccolithophores, peridineans and diatoms. The tintinnids themselves are eaten by copepods, euphausiids, tunicates and fish larvae.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2022-08-04
    Description: The results of an investigation of tintinnids from the western Arabian Sea are described. A total of 134 closing-net samples was obtained from 22 stations of the German "Meteor" expedition 1964/1965. Distribution charts of the dominant species of tintinnids from the study area are presented as well as a list of the world-wide distribution of these species as derived from the literature. Tintinnids were most abundant in the surface waters. The layer from O-25 m yielded a maximum of 94.3% and a minimum of 61.3% of the tintinnids present from O-175 m; the mean was 80%, There was no significant difference in the vertical distribution between day and night stations nor wasb there any indication of the influence of the thermocline upon vertical distribution of tintinnids. TS-diagrams show different water types in the western Arabian Sea. Temperatur-salinity-tintinniddiagrams indicate regional patterns in the distribution of various species of tintinnids. Some tintinnids can be used as indicator species: Climacorylis scalaria, Parundella lohmanni and Amphorella amphora were typical for the Somali Current whereas Rhabdonella apophysata and Brandtiella palliata indicated the presence of Bast African Coastal Current water. The concentration of tintinnids in the upper 25 m ranged between 4,800 and 39,300 individuals/m3 (mean 19,000/m3). Plasma volume of tintinnids was calculated to permit comparison of different links in the food chain. There was a mean of 51 mm3/m2 in the upper layer, equivalent to a concentration of 2 mm3/m3. Carbon values were computed from the plasma volume of tintinnids, phytoplankton and larger Zooplankton. The ratio of phytoplankton plus microzooplankton carbon to large zooplankton carbon was 1 : 0.8 in the Somali Current, 1 : 0.4 in the Bast African Coastal Current and 1 : 1.2 in the mixing zone of these current systems. Tintinnids are one of the first links in the food chain. It is very likely that a part of the organic detritus and of the nanoplankton is transfered to large herbivores or omnivores via tintinnids and other protozoans. This mechanism might be especially effective during seasons when large phytoplankters are not available in the ocean.
    Type: Article , PeerReviewed
    Format: text
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