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Diatom Research Volume 8, 1993 - Issue 2
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ASTERIONELLA FORMOSA RALFS: THE PROCESS OF RAPID SIZE REDUCTION AND ITS POSSIBLE ECOLOGICAL SIGNIFICANCE

H. J. Kling Department of Fisheries and Oceans, Central and Arctic Region, Freshwater Institute, 501 University Crescent, Winnipeg, MB, Canada, R3T 2N6
Pages 475-479 | Published online: 31 Oct 2011
 
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Abstract

Rapid cell size reduction is reported in cultures of Asterionella formosa Hass. and in samples from natural populations. Available evidence suggests that this phenomenon may be directly related to nutrient supply (Si-limitation in the presence of excess P) and is not simply a result of culture conditions or a teratological phenomenon. This very distinct morphological variation has ecological significance and merits further study; it could become a potentially useful limnological and paleoecological indicator.

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