Effect of the hydrostatic pressure on the vertical distribution of <Emphasis Type="Italic">Laminaria saccharina</Emphasis> (L.) lamouroux in the Barents Sea |
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| Authors: | M V Makarov |
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| Institution: | 1.Murmansk Marine Biological Institute, Kola Scientific Center,Russian Academy of Sciences,Murmansk,Russia |
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| Abstract: | An experimental study was undertaken to reveal the influence of the hydrostatic pressure on the early developmental stages
of Laminaria saccharina, including the motile zoospores, the embryospores, and sprouting spores. The pressure did not affect the moving patterns
and sinking rate of the zoospores. The sprouting spores were the most vulnerable among the other types; i.e., a pressure of
3 standard atmospheres (the hydrostatic pressure at the depth of 30 m) delayed or disturbed their development. The light conditions
did not limit the vertical distribution of L. saccharina to greater depths. We assume that the hydrostatic pressure may significantly impact the vertical distribution of benthic
macrophytes in the sublittoral zone. |
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