Die Judenfrage im galizischen Landtag 1861 - 1868

Filip Friedmann

Zur Erklärung der Mischna Erubin 2, 5

S. Friedmann

Ein nationales Volksgesundheitsamt : (zur bevorstehenden Hilfskonferenz)

David Aryeh Friedmann

Das Dreigestirn : Salomon Sulzer, Louis Lewandowski und Moritz Deutsch

Aron Friedmann

Neue Colonialpolitik

Adolf Friedmann

Danksagung!

Chajem Friedmann

Dr. Hugo Zuckermann : ein Gedenkblatt

von Arnold Friedmann

Vier Reden

von S. Friedmann

Der Geiger von Gmünd : ein Wunder- und Zaubermärchen in drei Akten ; nach einer alten Sage gedichtet

von Alfred Friedmann

Kurz und lang : Ansprachen und Reden für die Festtage

von Simon Friedmann

Deutsche Haggadah : Ordnung für die häusliche Feier an den ersten beiden Abenden des Pessachfestes

von Simon Friedmann

Tab. 3: Substrate pH values of crypthoendolithic microbial communities

Cryploendolithic microbial communities in the Ross Desert (McMurdo Dry Valleys) are characterized on the basis of photosymlictic microorganisms and fungi. Two eukaryotic communities (the lichen-dominated and Hemichloris communities) and three cyanobacterial communities (the red Gloeocapsa, Hormathonema-Gloeocapsa and Chroococcidiopsis communities) are described. Eleven coccoid. ohne pleurocapsoid, and five filamentous cyanobacteria occurring in these communities are characterized and illustrated. The moisture grade of the rock substrate seems to affect pH. Formation of primary iron stain, and the distribution of microbial communities.

Table 3: Reproductive viability of Hemichloris antarctica after cycles of cooling und warming

Laboratory experiments show that undercooling to about -5°C occurs in colonized Beacon sandstones of the Ross Desert, Antarctica. High-frequency temperature oscillations between 5°C and -5°C or -10°C (which occur in nature on the rock surface) did not damage Hemichloris antarctica. In a cryomicroscope, H. antarctica appeared to be undamaged after slow or rapid cooling to -50°C. l4CO2 incorporation after freezing to -20°C was unaffected in H. antarctica or in Trebouxia sp. but slightly depressed in Stichococcus sp. (isolated from a less extreme Antarctic habitat). These results suggest that the freezing regime in the Antarctic desert is not injurious to endolithic algae. It is likely that the freezing-point depression inside the rock makes available liquid water for metabolic activity at subzero temperatures. Freezing may occur more frequently on the rock surface and contribute to the abiotic nature of the surface.