How is filamentous algae counted?
A fast and simple method to quantify filamentous algae in inverted microscope is described. It is based on the number of intersections between the midline of a diametrical transect and the filaments on the chamber bottom. It is shown to be theoretically sound and is compared with the common length measurement method.
What are filamentous cyanobacteria?
Filamentous cyanobacteria are a diverse and morphologically complex group of prokaryotes. Once recognized as belonging to two distinct orders (Oscillatoriales, Nostocales), they now comprise at least four orders (Synechococcales, Oscillatoriales, Spirulinales, Nostocales).
Why are cyanobacteria filamentous?
Cyanobacteria present remarkable variability in terms of morphology: from unicellular and colonial to filamentous forms. Filamentous forms exhibit functional cell differentiation such as heterocysts (for nitrogen fixation), akinetes (resting stage cells), and hormogonia (reproductive, motile filaments).
What is the taxonomy of cyanobacteria?
Integrated Taxonomic Information System – Report
| Subkingdom | Negibacteria Cavalier-Smith, 2002 |
| Phylum | Cyanobacteria Cavalier-Smith, 2002 – blue-green algae, cyanophytes |
| Direct Children: | |
| Genus | Prochlorococcus Chisholm et al., 2001 |
| Class | Cyanophyceae |
How do you count cyanobacteria?
The density of cyanobacteria can be easily calculated by counting the number of cells on the filter and dividing this by the volume of water filtered (i.e. number of cells per ml).
What is the common name for cyanobacteria?
blue-green algae
Because of the color, texture, and location of these blooms, the common name for cyanobacteria is blue-green algae. However, cyanobacteria are related more closely to bacteria than to algae.
What is the difference between cyanobacteria and blue green algae?
Green algae and cyanobacteria are two variants of algae. Both green algae and cyanobacteria are mainly photosynthetic organisms. Green algae contain chloroplasts but cyanobacteria lack chloroplasts. Thus, the main difference between green algae and cyanobacteria is the presence or absence of chrloroplasts in the cell.