Macroscopic cyanobacteria of the genus Nostoc: a neglected and endangered constituent of European inland aquatic biodiversity

Non-marine algae of Australia:1. Survey of colonial gelatinous blue-green macroalgae (Cyanobacteria)

“…4-6 µm diam). Hormogonal packets, with terminal heterocytes, have been seen in Australian material (Entwisle 1862, Cherry 336, 337), and the gross form of thalli, as single or clustered 'bullets', is like that reported by overseas workers (Dodds & Castenholz 1988;Mollenhauer 1970;Mollenhauer et al 1999). The sheath around some trichomes close to the surface in some thalli is conspicuous, and rather more narrow than that in N. commune.…”

“…For instance, N. linckia gets softer with age and has akinetes larger than vegetative cells, and N. muscorum favours soft waters. Mollenhauer et al (1999) recommend the distinction of one-pored heterocytes be used to separate N. commune from other similar taxa. They also highlight hormogonial development and absence of morphologically distinguishable akinetes as useful characters.…”

“…The distribution of trichomes and their length is one of degree, but consistent within the specimens cited; as such it may be ecologically rather than genetically based. Mollenhauer et al (1999) place importance on N. verrucosum plants remaining permanently moist in the field, whereas N. commune is able to withstand periods of desiccation.…”

Nostoc genties melsvabakterių įvairovė ir jos apsauga Lietuvoje

“…Kai kuriose Europos šalyse minėtos rūšys yra retos, nykstančios, o kai kurjau išnykusios (Mollenhauer et al 1999).…”

Growth response to temperature and light inNostoc spongiaeforme(Cyanobacteria)

“…There is relatively little quantitative information on the ecological requirements for population growth of members of the genus Nostoc (Mollenhauer et al 1999;Whitton 2000) and even less data specifically for N. spongiaeforme. Reports indicate that the abundance of Nostoc spp.…”