TY  - JOUR
A1  - Jasper, Willi
A1  - Schoeps, Julius H.
A1  - Vogt, Bernhard
T1  - Antisemitismus in Rußland und Deutschland : alte und neue Feindbilder
Y1  - 1995
SN  - 0932-8408
ER  - 
TY  - THES
A1  - Vogt, Bernhard
T1  - Franz Oppenheimer : Wissenschaft und Ethik der sozialen Marktwirtschaft
T2  - Studien zur Geistesgeschichte
Y1  - 1997
SN  - 3-8257-0059-3
VL  - 22
PB  - Philo
CY  - Bodenheim
ER  - 
TY  - JOUR
A1  - Jasper, Willi
A1  - Vogt, Bernhard
T1  - Integration und Selbstbehauptung. russische Juden in Deutschland
Y1  - 1999
SN  - 0041-2716
ER  - 
TY  - JOUR
A1  - Schoeps, Julius H.
A1  - Jasper, Willi
A1  - Vogt, Bernhard
T1  - Russian Jews in Germany
Y1  - 1998
SN  - 87-7876-079-8
ER  - 
TY  - JOUR
A1  - Kamjunke, Norbert
A1  - Vogt, Bernhard
A1  - Woelfl, Stefan
T1  - Trophic interactions of the pelagic ciliate Stentor spp. in North Patagonian lakes
N2  - 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.
Y1  - 2009
UR  - http://www.sciencedirect.com/science/journal/00759511
U6  - https://doi.org/10.1016/j.limno.2008.08.001
SN  - 0075-9511
ER  -