A Note on Seasonal Variation in Radiolarian Abundance |
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| Authors: | Richard Arthur Reyment Isao Motoyama Miyuki Ota Yuichiro Tanaka |
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| Institution: | (1) Section for Palaeozoology, Natural History Museum, Box 50007, Stockholm, 10405, Sweden;(2) Department of Earth Evolution Sciences, University of Tsukuba, Tsukuba 305-8572, Japan;(3) Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba 305-8567, Japan |
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| Abstract: | A statistical analysis of two consecutive sequences of observations on radiolarian abundances in the western North Pacific,
by methods appropriate to data on the simplex (i.e., compositional data), show that although the overall graphical presentations
of the frequencies appear similar, there are substantial differences in the earlier part of each of the series. The results
of the multivariate analyses are used for identifying those species that contribute most to the analysis. A brief guide to
the mathematical properties of compositional data is given. |
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| Keywords: | Radiolaria seasonal variation compositions multivariate analysis |
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