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  • Articles  (166)
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Journal
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 7 (1970), S. 112-122 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Pelagic Sargassum was collected in late summer, late winter, and early and late spring from inshore waters, the Gulf Stream and the Sargasso Sea of the Western North Atlantic Ocean. The noncolonial macrofauna was picked from the weed samples. The 34 samples contained 67 species and 11,234 individuals. The Shannon-Wiener index of diversity had a mean value of 2.419±0.177 (t.05s x − ) and a statistical range between 1.401 and 3.437 (t.05 s). Mean diversity values were not significantly different among the various sampling series, and diversity did not vary with raft volume. High diversity values were related to an equitable distribution of species resulting from a stable environment and an area low in productivity. Species composition of the Sargassum organisms varied seasonally and geographically. Animals were more abundant in the spring than in the fall samples. Samples collected on a transect in the Gulf Stream and Sargasso Sea maintained a similar faunal composition.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 123 (1995), S. 401-409 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In 1991 we examined the developmental consequences of swimbladder growth and sexual dimorphism on specific gravity (SG) and percent buoyancy (%B) in the oyster toadfish (Opsanus tau Linnaeus collected in the York River, Virginia) and tested the hypothesis that large ovaries compensate for the buoyancy conferred by a smaller swimbladder in females. Weight in water (Ww) increased as a linear function of weight in air (Wa) for both sexes, and there were no sexual differences between regressions. SG and %B did not change with Wa, indicating proportional growth of body and swimbladder. SG averaged 1.049±0.002 and %B 3.183±0.160. Removal of the gonads had no significant effect on Ww, SG or %B, indicating that the larger ovaries did not compensate for buoyancy associated with a smaller swimbladder. In fact testis and ovary SG did not differ significantly from values for intact fish. However, gonad composition changed with development: testis SG and % fat decreased with gonosomatic index, whereas overy SG and % fat increased, but % water decreased. Removal of the swimbladder significantly increased SG to 1.083 and %B to 6. Swimbladder volume increased linearly with Wa and was significantly larger in males; adjusted means were 11.40±0.83 and 8.94±0.83 ml for males and females, respectively. Variability in bladder volumes contributed to the absence of sexual differences in SG and may be permissible because negative buoyancy imparts minimal selective advantage for precise volume and buoyancy control. The absence of a relationship between fish buoyancy and sexual dimorphism in bladder size supports evidence that sexual dimorphism in the swim-bladder relates to its function in sound production.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 60 (2002), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The western Indian Ocean seahorse Hippocampus fuscus is recorded for the first time in the Mediterranean. Its presence there is probably due to migration from the Red Sea via the Suez Canal.
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 137-137 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In coral reef environments that suffer regular physical disturbances, the fragmentation of established colonies is believed to be important in the recruitment (recoloniza-tion) of the local area by branching and free-living corals1"4. High rates of wave action and sedimentation, for example, would ...
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  • 5
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 24 (1994), S. 1-19 
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 8 (1985), S. 0 
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 25 (1933), S. 808-810 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial and engineering chemistry 8 (1969), S. 411-414 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 2008-2010 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The design and construction of a flange-mounted ultra-high vacuum compatible fatigue apparatus using a piezoelectric actuator is described. This apparatus is capable of operation under ambient pressures down to 10−9 Torr. Push-pull fatigue tests can be performed under load, total strain, and plastic strain control at frequencies up to 100 Hz. Control of the fatigue tests and data acquisition are done using standard fatigue control electronics and software.
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 20 (1928), S. 652-654 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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