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The water economy of the sea grass Thalassia testudinum

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Abstract

The osmotic values in the leaves of Thalassia testudinum Banks ex König, collected from the natural habitat, were found to be 32 atm; the relative transpiration was 100%. Electronmicroscopical analysis of the cuticle reveals many perforations. The critical sublethal water deficit lies near 65%. In dense meadows the green surface area of the plants amounts to 18.56 m2/m2 bottom area.

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Authors and Affiliations

  1. Abteilung Meeresbotanik, Institut für Meereskunde an der Universität Kiel, Kiel, Germany (FRG)

    F. Gessner

  2. Instituto Colombo-Aleman de Investigaciones Cientificas, Santa Marta, Punta de Betin, Colombia

    F. Gessner

  3. Abteilung Meeresbotanik, Institut für Meereskunde, Hohenbergstraße 2, 23 Kiel, Germany (FRG)

    F. Gessner

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  1. F. Gessner
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Communicated by O. Kinne, Hamburg

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Gessner, F. The water economy of the sea grass Thalassia testudinum . Marine Biology 10, 258–260 (1971). https://doi.org/10.1007/BF00352815

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  • DOI: https://doi.org/10.1007/BF00352815

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