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

✍ Scribed by Mr. Scott Robertson; Dr. Joyce Lewin

• Publisher: John Wiley and Sons
• Year: 1976
• Tongue: English
• Weight: 648 KB
• Volume: 61
• Category: Article
• ISSN: 1434-2944
• DOI: 10.1002/iroh.19760610207

✦ Synopsis

Abstract

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.