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RESPIRATION AND P 32 UPTAKE IN VARIOUS SPECIES OF FRESHWATER ALGAE AS AFFECTED BY A CURRENT 1
Author(s) -
Schumacher G. J.,
Whitford L. A.
Publication year - 1965
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1965.tb04561.x
Subject(s) - biology , algae , respiration , chlorophyceae , current (fluid) , botany , river ecosystem , respiratory quotient , diatom , ecology , environmental chemistry , oceanography , chlorophyta , biochemistry , ecosystem , geology , chemistry
SUMMARY Lotic species of freshwater algae have a higher respiratory rate in a current as compared with that in still water. Species in 4 classes (Chlorophyceae, Xan‐thophyceae, Bacillariophyceae, Rhodophyceae) were tested. A correspondingly higher uptake of P 32 was also noted. The fact that the increase in metabolic rate results from the sweeping effect of a current was indicated by the lower mineral uptake of filaments floating free in a current as compared with that of filaments held still in the current in the same container. The current effect was evident even at current speeds as low as 1‐4 cm jsec.