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Influences of macronutrients and water temperatures on summertime survival of Macrocystis canopies

  • Conference paper
Eleventh International Seaweed Symposium

Part of the book series: Developments in Hydrobiology ((DIHY,volume 22))

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.

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References

  • Brandt, R. P., 1923. Potash from kelp: early development and growth of the giant kelp, Macrocystis pyrifera. U.S. Dept. Agric., Bull. 1191, 40 pp.

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  • Jackson, G. A., 1976. Nutrients and productivity of the giant kelp, Macrocystis pyrifera, in the nearshore. Ph D Thesis, Calif. Inst. Technol., 134 pp.

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  • Womersley, H. B. S., 1954. The species of Macrocystis with special reference to those on southern Australian coasts. Univ. Calif. Publ. Bot. 27: 109–132.

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  • Zimmerman, R. C., 1983. Seasonal patterns in the productivity of a giant kelp (Macrocyst is pyrifera) forest: the effect of nutrient availability. Ph D Thesis, Univ. S. Calif., 182 pp.

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Author information

Authors and Affiliations

  1. California Institute of Technology, 91125, Pasadena, CA, USA

    W. J. North

  2. University of Southern California, 90089, Los Angeles, CA, USA

    R. C. Zimmerman

Authors
  1. W. J. North
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  2. R. C. Zimmerman
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Editor information

Editors and Affiliations

  1. Atlantic Research Laboratory, National Research Council of Canada, 1411 Oxford Street, Halifax, N.S., B3H 3Z1, Canada

    Carolyn J. Bird  & Mark A. Ragan  & 

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© 1984 Dr W. Junk Publishers, Dordrecht

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North, W.J., Zimmerman, R.C. (1984). Influences of macronutrients and water temperatures on summertime survival of Macrocystis canopies. In: Bird, C.J., Ragan, M.A. (eds) Eleventh International Seaweed Symposium. Developments in Hydrobiology, vol 22. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6560-7_82

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  • DOI: https://doi.org/10.1007/978-94-009-6560-7_82

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-6562-1

  • Online ISBN: 978-94-009-6560-7

  • eBook Packages: Springer Book Archive

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