The Determination of Hydrogen Ion Concentration in Connection With Fresh-Water Biological Studies

Abstract

It is accordingly the purpose of this paper to show ( 1) that hydrogen ion concentration is one of the factors governing the movement and distribution of fishes, its importance on the whole probably
equaling that of well-known factors; (2) that breeding places of fish are characteri2ed by differences in hydrogen ion concentration; (3) that hydrogen ion concentration has marked influence on the survival of fishes under adverse conditions.