Influences of macronutrients and water temperatures on summertime survival of Macrocystis canopies
- Creators
- North, W. J.
- Zimmerman, R. C.
- Others:
- Bird, Carolyn J.
- Ragan, Mark A.
Abstract
Macrocystis does not occur in tropical waters (Womersley 1954) and kelp canopies in southern and Baja California frequently deteriorate or disappear during warm summers (Brandt 1923; Clendenning & Sargent 1971). Many workers have assumed· that kelp tissues do not tolerate water temperatures of 20°C or higher. Clendenning & Sargent (1971), however, found highest photosynthetic rates for Macrocystis occurred between 20° and 25°C for southern California Macrocystis (25° to 30° was optimal for Baja California kelp). Concentrations of macro nutrient are almost nil in the mixed layers within the Southern California Bight after strong summer thermoclines develop, leading Jackson (1975) to suggest that improper nutrition might be a factor in summertime canopy deterioration.
Additional Information
© Dr W. Junk Publishers, Dordrecht 1984. Project support from the Gas Research Institute is gratefully acknowledged. We also thank personnel of the General Electric Company for their role in operating and maintaining the Hemidome facility, and we thank the University of Southern California for their assistance in and support of our activities. Dr. V. A. Gerard planned and supervised initial phases of the Hemidome studies reported herein. Special thanks are due the staff of the Kerckhoff Marine Laboratory who conducted most of the laborious field work reported herein.Additional details
- Eprint ID
- 105740
- Resolver ID
- CaltechAUTHORS:20201001-145811969
- Gas Research Institute
- Created
-
2020-10-02Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Series Name
- Developments in Hydrobiology
- Series Volume or Issue Number
- 22