Bacillariophyta—the diatoms
Bacillariophyta—the diatoms Bacillariophyta—the diatoms
Asterionella: elongate cells which are joined at the base to form stellate colonies, (seen in valve view) basal pole of the cell typically wider than the apical pole Fairly large for planktonic diatoms, each cell 50-70 microns Commonly found in dense blooms during May, prior to the onset of thermal stratification
Examples of centric diatoms Non-raphed and non-motile Cyclotella: and Stephanodiscus •Solitary forms (non-colonial) •Usually abundant in spring & fall plankton 20 µm
- Page 1 and 2: Bacillariophyta—the diatoms •th
- Page 3 and 4: The new valve is always a hypovalve
- Page 5 and 6: Some examples of pennate diatoms ge
- Page 7: Some pennate forms are colonial and
- Page 11 and 12: Achnanthes: heterovalvular, one val
- Page 13 and 14: Epiphytic pennate diatoms
- Page 15 and 16: Chrysophyta--Golden brown algae Cel
- Page 17 and 18: 50 microns large branched colonies,
- Page 19 and 20: Pyrrophyta--Dinoflagellates •Cell
- Page 21 and 22: Gonyaulax—causes red tides, shell
- Page 23: Pfiesteria—a toxic dinoflagellate
Asterionella: elongate cells which are<br />
joined at the base to form stellate<br />
colonies, (seen in valve view) basal pole<br />
of the cell typically wider than the apical<br />
pole<br />
Fairly large for planktonic <strong>diatoms</strong>, each<br />
cell 50-70 microns<br />
Commonly found in dense blooms during<br />
May, prior to the onset of thermal<br />
stratification
Change language