@article{JasperSchoepsVogt1995, author = {Jasper, Willi and Schoeps, Julius H. and Vogt, Bernhard}, title = {Antisemitismus in Rußland und Deutschland : alte und neue Feindbilder}, issn = {0932-8408}, year = {1995}, language = {de} } @article{JasperVogt1999, author = {Jasper, Willi and Vogt, Bernhard}, title = {Integration und Selbstbehauptung. russische Juden in Deutschland}, issn = {0041-2716}, year = {1999}, language = {de} } @article{KamjunkeVogtWoelfl2009, author = {Kamjunke, Norbert and Vogt, Bernhard and Woelfl, Stefan}, title = {Trophic interactions of the pelagic ciliate Stentor spp. in North Patagonian lakes}, issn = {0075-9511}, doi = {10.1016/j.limno.2008.08.001}, year = {2009}, abstract = {The zooplankton of oligotrophic lakes in North Patagonia is often dominated by mixotrophic ciliates, particularly Stentor amethystinus and Stentor araucanus. Therefore, we tested whether Stentor spp. (i) is an important food for juvenile endemic (Cheirodon australe, Galaxias maculatus, Odontesthes mauleanum, Percichthys trucha) and introduced (Oncorhynchus mykiss) fish species, and (ii) represents a remarkable grazer of bacteria. Ingestion rates of fish estimated by disappearance of Stentor in feeding experiments ranged between 8 (G. maculatus) and 53 (C australe) ciliates per fish and day, and assimilation rates measured by using radioactively labelled Stentor ranged between 3 (P. trucha) and 52 (C australe) ciliates per fish and day. However, although we detected the consumption of Stentor by fish, the daily consumption amounted to at most 0.2\% of the fish biomass which can not cover the energy requirement of the fish. Furthermore, the daily consumption was equivalent to a maximum of 1.6\% of the Stentor standing stock so that fish predation does not seem to be an important mortality factor for the ciliates. The clearance rate of Stentor sp. on natural bacteria was on average 3.8 mu l cil(-1) h(-1). The daily ingestion (mean 3.9 ngC cil(-1) d(-1)) was about 3.5\% of the individual biomass of Stentor sp. Therefore, bacteria ingestion might explain a ciliate growth rate of appr. 1\% d(-1), which was about 17\% of the photosynthesis of endosymbiotic algae. The maximum density of Stentor sp. in the take could ingest about 1 mu g C L-1 d(-1) bacteria which is only 3\% of average bacterial production. Thus, grazing by Stentor sp. does not seem to be a main loss factor for the bacteria.}, language = {en} } @article{SchoepsJasperVogt1998, author = {Schoeps, Julius H. and Jasper, Willi and Vogt, Bernhard}, title = {Russian Jews in Germany}, isbn = {87-7876-079-8}, year = {1998}, language = {en} }