PT  - JOURNAL ARTICLE
AU  - POULÍČKOVÁ, 
AU  - A., 
TI  - Morphological variability of natural populations of Aulacoseira granulata (EHR.) SIMONS (Bacillariophyceae)
DP  - 2003 Mar 1
TA  - Czech Phycology
PG  - 125--140
VI  - 3
IP  - 1
IS  - 18025439
AB  - 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.