Investigations Concerning the Influence of Hydrostatic Pressure upon the O₂‐exchange of Marine Benthic Algae

Abstract

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 intcnsities and the different durations of pressurc were analyzed . It was observed how different parts of the sitme thallus are effected in their gas exchange by the same pressure . The interrelationships between hydrostatic pressure and the different ecofactors e . g . temperature. salinity. p H and 02-concentration of the external medium were also studied . Furthermore the seasonal variations. the behaviour of shallow and deep water a l g e~. the comparison of different ecotypes and the differences in taxonomically closely related algm wcre obscrved in regard t o their pressure resistance . Inhaltsverzeichnis