Abstract
A water-soluble fraction of green leaves of Zostera marina L. decreased carbon uptake rates in diatoms found as epiphytes at Roberts Bank (Lat 49°2′N; Long. 123°8′W) on the west coast of Canada. Extract concentrations of 11 to 1 μg dry leaf ml-1, added immediately before 14C-uptake was measured over a 3-h period, reduced uptake to 36 to 80% of controls, respectively. A lower concentration (0.6 μg dry leaf ml-1) reduced uptake significantly in only one of four cultures. Addition of the whole extract 3 d before carbon uptake was measured or in one-third doses, 0, 1, and 2 d before, resulted in inhibition similar to that observed when the whole extract was added immediately before the 14C.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
Literature cited
Brylinsky, M.: Release of dissolved organic matter by some marine macrophytes. Mar. Biol. 39, 213–220 (1977)
Harrison, P. G.: Control of microbial growth and of amphipod grazing by water-soluble compounds from leaves of Zostera marina. Mar. Biol. 67, 225–230 (1982)
Harrison, P. J., R. E. Waters and F. J. R. Taylor: A broad spectrum artificial seawater medium for coastal and open ocean phytoplankton. J. Phycol. 16, 28–35 (1980)
Hoshaw, R. W. and J. R. Rosowski: Methods for microscopic algae. In: Handbook of phycological methods. Culture methods and growth measurements, pp 53–67 Ed. by J. R. Stein. Cambridge: Cambridge University Press 1973
Penhale, P. A. and W. O. Smith, Jr.: Excretion of dissolved organic carbon by eelgrass (Zostera marina) and its epiphytes. Limnol. Oceanogr. 22, 400–407 (1977)
Penhale, P. A. and G. W. Thayer: Uptake and transfer of carbon and phosphorus by eelgrass (Zostera marina L.) and its epiphytes. J. exp. mar. Biol. Ecol. 42, 113–123 (1980)
Rao, V. N. R. and J. Lewin: Benthic marine diatom flora of False Bay, San Juan Island, Washington. Syesis 9, 173–213 (1976)
Zapata, O. and C. McMillan: Phenolic acids in seagrasses. Aquat. Bot. 7, 307–317 (1979)
Author information
Authors and Affiliations
Additional information
Communicated by J. M. Lawrence, Tampa
Rights and permissions
About this article
Cite this article
Harrison, P.G., Durance, C.D. Reductions in photosynthetic carbon uptake in epiphytic diatoms by water-soluble extracts of leaves of Zostera marina . Marine Biology 90, 117–119 (1985). https://doi.org/10.1007/BF00428222
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00428222