Czech Phycology 3: 125-140, 2003

Morphological variability of natural populations of Aulacoseira granulata (EHR.) SIMONS (Bacillariophyceae)

Morfologická variabilita přírodních populací Aulacoseira granulata (EHR.) SIMONS (Bacillariophyceae)

POULÍČKOVÁ, A.

Measurements were carried out of cell height, valve diameter and cell number per filament during seasonal maxima of A. granulata for 24 hours at hourly intervals in the years of 1986-1988. Although, their cell length:width ratio corresponded to var. angustissima, the average width itself exceeded Hustedt´s figures (1930). Cell division in the populations was not synchronous. The cells had no tendency to maintain a constant volume - wider filaments contained longer cells. The populations differed in average valve diameter and cell heigh. The presumptive reasons of these differences were discussed.

Published: March 1, 2003  Show citation

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POULÍČKOVÁ,, & A., (2003). Morphological variability of natural populations of Aulacoseira granulata (EHR.) SIMONS (Bacillariophyceae). Czech Phycology3(1), 125-140
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