Effect of interactions between temperature and nitrate supply on the cell-division rates of two marine phytoflagellates

✍ Scribed by W. H. Thomas; A. N. Dodson

• Publisher: Springer-Verlag
• Year: 1974
• Tongue: English
• Weight: 462 KB
• Volume: 24
• Category: Article
• ISSN: 0025-3162
• DOI: 10.1007/bf00391895

✦ Synopsis

Half-saturation constants and maximum cell-division rates were determined at two temperatures for nitrate-limited growth of the two marine phytoflagellatcs Dunaliella sp. and Gymnodinium splendens, using batch-culture techniques. The halfsaturation constant, K~, increased with increasing temperature, but maximum cell-division rates increased with increasing temperature in only one of the algae studied, G. splendens. It is suggested that changes in K, with temperature impose a double stress on these phy~op~nkton when they grow in nitrate-depleted, high-temperature water.