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The Seasonal Distribution of Macroplankton as shown by Catches in the 2-metre Stramin Ring-trawl in Off-shore Waters off Plymouth

Published online by Cambridge University Press:  11 May 2009

F. S. Russell
F. S. Russell
Affiliation:
Naturalist at the Plymouth Laboratory
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Extract

In past years during the study of the vertical distribution of macroplankton much information has been obtained on the abundance of the different animals in the catches at different times of the year. Results have already been published to show the seasonal distribution of pelagic young fish (4), and also on the abundance and composition of the Sagitta population (5, p. 565). In this latter study the change over from the predominance of Sagitta clcgans to that of S. sctosa during the years 1930 to 1932 is striking. During the examination of catches it has been noticed that each year has been characterised at some time by the abundance of a species which may occur only in small numbers, if at all, in other years. This has been especially noticeable in the composition of the medusa population. It is necessary to follow these changes through a number of years to see if the presence of certain plankton organisms cannot be used as an index of conditions that may lead to other fluctuations such as those of the fisheries.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 19 , Issue 1 , August 1933 , pp. 73 - 81
Copyright
Copyright © Marine Biological Association of the United Kingdom 1933

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References

REFERENCES

1. Allen, E. J.The Distribution of Marine Plankton. Journ. Mar. Biol. Assoc, N.S., Vol. IV, No. 4, pp. 408–409, 1897.Google Scholar
2. Russell, F. S.The Vertical Distribution of Marine Macroplankton. An Observation on Diurnal Changes. Journ. Mar. Biol. Assoc., Vol. XIII, No. 4, p. 769, 1925.CrossRefGoogle Scholar
3. Russell, F. S.The Vertical Distribution of Marine Macroplankton. V. The Distribution of Animals caught in the Ring-trawl in the Daytime i n the Plymouth Area. Journ. Mar. Biol Assoc., Vol. XIV, No. 3, pp. 557–608, 1927.CrossRefGoogle Scholar
4. Russell, F. S.The Seasonal Abundance and Distribution of the Pelagic Young of Teleostean Fishes caught in the Ring-trawl in Offshore Waters n i the Plymouth Area. Journ. Mar. Biol Assoc., Vol. XVI, No. 3, pp. 707–722, 1930.CrossRefGoogle Scholar
5. Russell, F. S.On the Biology of Sagitta. IV. Observations on the Natural History of Sagitta elegans Verrill and Sagitta setosa J. Miiller in the Plymouth Area. Journ. Mar. Biol Assoc., Vol. XVIII, No. 2, pp. 559–574.Google Scholar