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Blooms of Surf‐zone Diatoms Along the Coast of the Olympic Peninsula, Washington. VIII. Effect of Temperature and Oxygen Concentration on Respiration of Chaetoceros armatum in the Natural Environment
Author(s) -
Robertson Scott,
Lewin Joyce
Publication year - 1976
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.19760610207
Subject(s) - respiration , oxygen , diatom , respiration rate , limiting oxygen concentration , environmental science , oceanography , chemistry , biology , botany , geology , organic chemistry
Dark respiration rates of the surf diatom species, Chaetoceros armatum , were measured in field experiments throughout a year‐round study. Measurements of dissolved oxygen were made by employing the Winkler oxygen technique. Oxygen concentration in the ambient water had a significant positive effect upon respiration rate at all temperatures encountered during the period of study (4.6d̀ up to 13.8 d̀C). Above 8d̀, respiration rate increased with increasing temperature up to about 12.5d̀. Above 12.5d̀, temperature had a detrimental effect. The relationship between the concentration of dissolved oxygen and respiration rate was confirmed experimentally by artificially lowering or raising the oxygen concentration.