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The Nansen closing method with vertical plankton nets

Published online by Cambridge University Press:  11 May 2009

R. I. Currie  and
P. Foxton
R. I. Currie
Affiliation:
National Institute of Oceanography, Wormley, Surrey
P. Foxton
Affiliation:
National Institute of Oceanography, Wormley, Surrey
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Extract

Several methods have been devised for sampling plankton in the different water layers in the ocean, but for many years vertically hauled nets closed by a method devised by Nansen (1915) have fulfilled this purpose. Recently, however, an investigation by Barnes (1949) cast doubt on the validity of this method for quantitative work, and as in his paper he specifically referred to nets of the type used on the ‘Discovery’ Expeditions, the present observations were conducted to determine whether Barnes's findings were of general application to the method.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 35 , Issue 3 , October 1956 , pp. 483 - 492
Copyright
Copyright © Marine Biological Association of the United Kingdom 1956

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References

Barnes, H., 1949. A statistical study of the variation in vertical plankton hauls, with special reference to the loss of the catch with divided hauls. J. mar. biol. Ass. U.K., Vol. 28, pp. 429–46.Google Scholar
Hjort, J. & Ruud, J. T., 1927. A method for the analysis and comparison of plankton samples. J. Cons. int. Explor. Mer, Vol. 2, pp. 28–37.CrossRefGoogle Scholar
Kemp, S., Hardy, A. C. & Mackintosh, N. A., 1929. Objects, equipment and methods. ‘Discovery’ Rep., Vol. 1, pp. 141–232.Google Scholar
Künne, Cl., 1929. Vergleich der Fangfähigkeit verschiedener Modelle von planktonNetzen. Rapp. Cons. Explor. Mer, Vol. 59.Google Scholar
Motoda, S. & Anraku, M., 1955. The variability of catches in vertical plankton hauls. Bull. Fac. Fish. Hokkaido Univ., Vol. 6, pp. 152–75Google Scholar
Murray, Sir J. & Hjort, J., 1912. The Depths of the Ocean. London: Macmillan.Google Scholar
Nansen, F., 1915. Closing nets for vertical hauls and for horizontal towing. Publ. Circ. Cons. Explor. Mer, No. 67.CrossRefGoogle Scholar
Nicholls, A. G., 1933. On the biology of Calanus finmarchicus. I. Reproduction and seasonal distribution in the Clyde sea-area during 1932. J. mar. biol. Ass. U.K., Vol. 19, pp. 83–109.CrossRefGoogle Scholar
Ostenfeld, C. H. & Jespersen, P. 1924. Standard net for plankton collections. Publ. Circ. Cons. Explor. Mer, No. 84.Google Scholar
Wiborg, K. F., 1948. Experiments with the Clarke-Bumpus plankton sampler and with a plankton pump in the Lofoten area in northern Norway. Fiskeridir. Skr. Havundersok., Vol. 9, No. 2.Google Scholar