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  • Other Sources  (228)
  • Articles (OceanRep)  (228)
  • Elsevier  (145)
  • Institut für Polarökologie Kiel  (42)
  • Wiley  (40)
  • American Meteorological Society
  • Springer Nature
  • 1990-1994  (228)
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  • Other Sources  (228)
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Year
  • 1
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    Distribution and abundance of the octopus Eledone cirrhosa in the Tyrrhenian Sea, Central Mediterranean (1992)
    Elsevier
    In:  Fisheries Research, 13 (1). pp. 53-66.
    Details
    Publication Date: 2020-07-31
    Description: Distribution and abundance of the horned octopus Eledone cirrhosa in the Tyrrhenian Sea are described on the basis of stratified-random bottom trawl surveys in spring and summer of the years 1985–1987. Specimens were caught between 25 and 630 m depth (higher densities between 50 and 200 m depth); mature males were found to prefer deeper bottoms than mature females. Young specimens occurred in spring samples from the Western Ligurian Sea and in summer samples from the Lower Tyrrhenian Sea, but were scarcely represented in the Higher Tyrrhenian Sea. Thus recruitment seems to be progressively delayed later in the season from north to south. The greatest abundance was recorded in the Higher Tyrrhenian Sea; wide seasonal variations of minimum stock biomass estimates have been observed and total biomass decreased from 1985 to 1987 in the surveyed areas.
    Type: Article , PeerReviewed
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  • 2
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    Age and growth of the squid Sthenoteuthis pteropus (Oegopsida: Ommastrephidae) from the Central-East Atlantic (1992)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 163 (2). pp. 261-276.
    Details
    Publication Date: 2017-03-29
    Description: An investigation was carried out on the morphology, growth and microstructure of statoliths of 833 specimens of Sthenoteuthis pteropus (Steenstrup) mantle length (ML): 2–548 mm collected in the open waters of the Gulf of Guinea in 1984–1988. Statolith morphology is similar to that of other species of the subfamily Ommastrephinae and is similar to the sibling species S. oulaniensis. Statolith development includes five stages resembling those of Illex illecebrosus and other ommastrephids. Statolith growth is characterized by negative allometry. Increments visible in ground sections of statoliths can be grouped into four main growth zones, differing mainly in colour and increment width. Age and growth rates of S. pteropus were calculated using increment counts. The life span of females of all size groups does not exceed 1 yr, that of males is 1–2 months shorter, probably due to preliminary mating. Instantaneous relative growth rage (G) of paralarvae is high (up to 16% of body weight (BW)). G values for juveniles decline, but remain relatively high (7–8% BW). Juveniles attain 100–110 mm ML by age 100–110 days. G values for adults are the lowest (1.8–2% BW), but daily growth rates reach maximum values (40–70 g per day in large females of 450–500 mm ML). Each ontogenetic phase of S. pteropus corresponds to features of morphology, growth and microstructure of the statolith.
    Type: Article , PeerReviewed
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  • 3
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    Athleten des Meeres Zur Ökophysiologie pelagischer Kalmare (1994)
    Wiley
    In:  Biologie in unserer Zeit, 24 (4). pp. 192-199.
    Details
    Publication Date: 2020-06-05
    Type: Article , PeerReviewed
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  • 4
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    Determination of intracellular pH and PCO2 after metabolic inhibition by fluoride and nitrilotriacetic acid (1990)
    Elsevier
    In:  Respiration physiology, 81 . pp. 255-274.
    Details
    Publication Date: 2020-06-03
    Description: Mean intracellular pH (pHi) and PCO2 (PiCO2) have been analysed based on pH and total CO2 measurements in tissue homogenates. Tissues were sampled from undisturbed worms (Sipunculus nudus), squid (Illex illecebrosus), trout (Salmo gairdneri), toads (Bufo marinus), and rats. Homogenate metabolism was inhibited by the addition of potassium fluoride and nitrilotriacetic acid (NTA). Model calculations revealed that the influence of dilution, medium buffers, and contamination by extracellular fluids was negligible. In white muscle tissue the resulting pHi values were virtually the same as found in studies using DMO (dimethyloxazolidinedione). If large fractions of mitochondria were present (e.g. in heart muscle), DMO derived pHi values were considerably higher, probably representing overestimates. Homogenate derived pHi values are concluded to represent the effective mean pHi by taking into account pH gradients, and the volumes and buffering of cellular compartments. High time resolution and small variability make this method especially useful to assess rapid changes in pHi, e.g. in exercising animals.
    Type: Article , PeerReviewed
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  • 5
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    Welche Rolle spielen Lipide im Nervensystem polarer Fische? (1992)
    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 7 . pp. 39-42.
    Details
    Publication Date: 2017-05-16
    Type: Article , NonPeerReviewed
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  • 6
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    Besiedlungsstrategien von Fouling-Gemeinschaften auf lebenden Chlamys lslandica, Tromsö, Nord-Norwegen (1991)
    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 6 . pp. 26-27.
    Details
    Publication Date: 2017-05-09
    Type: Article , NonPeerReviewed
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  • 7
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    Marinbiologische Untersuchungen des Instituts für Polarökologie auf der ARK VII/2 - Expedition der "Polarstern" 1990 (1991)
    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 6 . pp. 28-29.
    Details
    Publication Date: 2020-12-23
    Type: Article , NonPeerReviewed
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  • 8
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    Growth and cuttlebone microstructure of juvenile cuttlefish, Sepia officinalis L., under controlled conditions (1994)
    Elsevier
    In:  Journal of Experimental Marine Biology and Ecology, 177 (1). pp. 73-78.
    Details
    Publication Date: 2020-07-27
    Description: The periodicity of deposition of growth increments in the cuttlebone of juvenile Sepia officinalis was investigated under controlled conditions for a short period after hatching (19 days). The slope of time elapsed and increment counts was significantly different from 1 indicating that lamellae are not deposited on a daily basis. The relationship between increment counts and juvenile length was, however, highly significant. Also significant were the relationships between the number of growth increments and shell length and increment counts and cuttlebone area. These data show that the number of growth increments is related primarily to the growth rate of the juvenile rather than to its chronological age. Taking into account these data, the cuttlebone lamellae cannot be used for age determination in the juvenile cuttlefish just after hatching.
    Type: Article , PeerReviewed
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  • 9
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    Auf den Spuren von Robert Scott's Terra Nova Expedition - Botanische Untersuchungen In Botany Bay, Granite Harbour, Süd Victoria Land, Kontinentale Antarktis (1993)
    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 8 . pp. 28-31.
    Details
    Publication Date: 2017-09-11
    Description: Die Terra Nova Expedition (1910-1913) von Robert Falcon Scott wird bis heute überschattet von dem tragischen Ende des Vorstoßes zum Südpol, den Scott mit seinen vier Begleitern im Januar 1912 - einen Monat nach Amundsen - erreichte. Dabei gerat leicht in den Hintergrund, daß neben dem Vorstoß zum Pol umfangreiche wissenschaftliche Untersuchungen einen wichtigen Schwerpunkt der Expedition bildeten. So wurden zahlreiche meteorologische, geologische und biologische Untersuchungen und Erkundungen von mehreren, unabhängig voneinander operierenden, wissenschaftlichen Feldgruppen durchgeführt. Eine dieser Feldgruppen war die Western Geological Party', die im Sommer 1911/12 unter der Leitung des Geologen Griffith Taylor von Granite Harbour ausgebend, einem tiefen natürlichen Hafen auf 77°S, die Küste von Süd Victoria Land erkundete. Die Forschungsergebnisse mit Hinweisen auf eine außergewöhnlich reiche Vegetation wurden im Reisebericht der Terra Nova Expedition bereits 1913 veröffentlicht (TAYLOR 1913). Aufgrund seiner abgeschiedenen Lage ist dieses Gebiet seitdem jedoch nur sehr selten besucht worden und in Vergessenheit geraten, ast 1989 wurde die außergewöhnlich reiche Vegetation wiederentdeckt.
    Type: Article , NonPeerReviewed
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  • 10
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    Gefrierschutzproteine bei Fischen der Antarktis (1994)
    Institut für Polarökologie Kiel
    In:  Mitteilungen zur Kieler Polarforschung, 9 . pp. 23-28.
    Details
    Publication Date: 2017-09-11
    Description: In der letzten Ausgabe der "Mitteilungen zur Kieler Polarforschung" habe ich über die Gefrierschutzproteine bei Pleuragramma antarcticum berichtet. Dabei habe ich unter anderem ein bislang unbekanntes Glykoprotein vorgestellt, welches nur bei dem antarktischen Silberfisch nachgewiesen werden konnte. Heute möchte ich auf die anderen Arten des Weddellmeeres und Lasarewmeeres eingehen, die ich im Rahmen meiner Promotion auf den Gefrierschutz hin untersucht habe ( WÖHRMANN & ZIMMERMANN 1992; WÖHRMANN 1993).
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