The Relation between pH and Aquatic Animals

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Abstract
The pH of a natural water is determined by the temp., sollds in solutlon, and its CO2 tension, a method for the determlnatlon of which is dlscussed. The Ph at a definite CO2 pressure is determined by the characterlstlcs of the water ltself. Aquatlc organlsms are able to withstand wlde ranges in pH. They are affected in their physlologlcal processes and behavlor by changes in CO2 and O tensions. Of the 2 CO2 is the more effectlve. their internal environment is regulated to harmonize with the external environment, the rapidity and the range of which are characteristics of the sp. and are no doubt factors in determining their distribution and migratory movements.