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Investigations Concerning the Influence of Hydrostatic Pressure upon the O 2 ‐exchange of Marine Benthic Algae
Author(s) -
Shameel Mustafa
Publication year - 1973
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19730580511
Subject(s) - hydrostatic pressure , algae , benthic zone , salinity , photosynthesis , oceanography , thallus , mediterranean sea , seawater , hydrostatic equilibrium , mediterranean climate , respiration , environmental science , biology , ecology , botany , geology , physics , thermodynamics , quantum mechanics
The after effects of non‐ecological hydrostatic pressures were studied upon the rates of respiration and photosynthesis of certain benthic algae from the Baltic Sea, North Sea and the Mediterranean Sea. The influences of different pressure intensities and the different durations of pressure were analyzed. It was observed how different parts of the same thallus are effected in their gas exchange by the same pressure. The interrelationships between hydrostatic pressure and the different ecofactors e. g. temperature, salinity, pH and O 2 ‐concentration of the external medium were also studied. Furthermore the seasonal variations, the behaviour of shallow and deep water algae, the comparison of different ecotypes and the differences in taxonomically closely related algae were observed in regard to their pressure resistance.