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I.—Siphonophora in the Plankton to the North and West of the British Isles*

Published online by Cambridge University Press:  11 June 2012

J. H. Fraser
Affiliation:
Marine Laboratory, Aberdeen.
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Synopsis

The distribution of about thirty species of warm water siphonophores over the period 1947–1964 to the north-west and north of the British Isles is used to give a generalized picture of the path of the Lusitanian stream. These species, which originate much further south, are relatively intolerent to change of environment and the distances they are carried can be associated with the degree of inflow on a yearly and seasonal basis.

Grouping the findings into four series of years over the 18 year period shows an increase in their northerly distribution from 1947 reaching a maximum in 1953 and 1954. This has since been maintained, with annual variations, at least until 1963. It is hoped that the data presented here can be used when comparing future studies of climatic change with the distribution of water masses.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1967

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References

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