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Culturing Selenastrum capricornutum (Chlorophyta) in a synthetic algal nutrient medium with defined mineral particulates

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Abstract

Algal nutrient studies in chemically-defined media typically employ a synthetic chelator to prevent iron hydroxide precipitation. Micronutrient-particulate interactions may, however, significantly affect chemical speciation and hence biovailability of these nutrients in natural waters. A technique is described by which Selenastrum capricornutum Printz (Chlorophyta) may be cultured in a medium where trace metal speciation (except iron) is controlled, not by organic chelation, but by sorption onto titanium dioxide. Application of this culturing protocol in conjunction with results from sorption studies of nutrient ions on mineral particles provides a means of studying biological impacts of sorptive processes in aquatic environments.

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Authors and Affiliations

  1. Water Resources Division MS/65, U.S. Geological Survey, 345 Middlefield Road, 94025, Menlo Park, CA, U.S.A.

    J. S. Kuwabara, J. A. Davis & C. C. Y. Chang

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  1. J. S. Kuwabara
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  2. J. A. Davis
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  3. C. C. Y. Chang
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Kuwabara, J.S., Davis, J.A. & Chang, C.C.Y. Culturing Selenastrum capricornutum (Chlorophyta) in a synthetic algal nutrient medium with defined mineral particulates. Hydrobiologia 124, 23–27 (1985). https://doi.org/10.1007/BF00011393

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  • DOI: https://doi.org/10.1007/BF00011393

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