Roland Psenner

TL;DR: The phagotrophic flagellates generally followed the seasonal and vertical patterns described for ciliates, and were shown to be important members of the planktonic food web in a cold, deep, oligotrophic lake.

TL;DR: In this article, a four-year study (1988-1991) of 413 lakes in the Central Alps (Italy, Switzerland and Austria) was conducted to quantify their acidification and showed that lake chemistry was influenced by silicate weathering and nitrogen uptake.

TL;DR: The results demonstrate that changes in biovolumes and cell size distributions of different bacterial taxa, and eventually of individual populations, reveal hitherto unknown processes within aquatic bacterial assemblages and may open new perspectives for the study of microbial food webs.

TL;DR: Cyclops abyssorum tatricus was highly resistant to UVB radiation and no significant lethal effect was observed and the resistance of B.gracilipes was higher than that reported in the literature for the same species, suggesting the existence of intraspecific differences in UV sensitivity.

TL;DR: This work investigates the microbial community on the surface of Aldegondabreen, a valley glacier in Svalbard which is supplied with carbon and nutrients from different sources across its surface, including colonies of seabirds, and shows that a diverse microbial community is present, dominated by cyanobacteria, Proteob bacteria, Bacteroidetes, and Actinobacteria that are well-known in supraglacial environments.