The occurrence of Zanardinia prototypus on the South Coast of England |
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| Authors: | N.A. Jephson R.L. Fletcher J. Berryman |
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| Affiliation: | 1. The Marine Laboratory, Department of Biological Sciences , Portsmouth Polytechnic , Ferry Road, Hayling Island, Hants, PO11 ODG;2. Botany Department , City of Leicester College of Education , Scraptoft, Leicester, LE7 9SU |
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| Abstract: | Studies were made to investigate the minimum time that should be allowed for settling of fixed, freshwater phytoplankton prior to enumeration. Results using a 16 cm vertical column at 20°C indicated that to obtain complete sedimentation the sample should be allowed to settle for a minimum period of 48 h (8 cm day-1) when small diatoms are absent, and for at least 96 h (4 cm day-1) when they are present and to be counted. Green algae settled faster than diatoms. Blue-green algae were absent from all samples in this study. |
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| Keywords: | actin Choristocarpus tenellus endoplasmic reticulum Macrocystis pyrifera Phaeophyceae polarity Splachnidium rugosum |
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