TY  - JOUR
A1  - Wanner, Manfred
A1  - Anders, Kenneth
A1  - Brunk, Ingo
A1  - Burkart, Bettina
A1  - van Dorsten, Petra
A1  - Fürstenau, Stefan
A1  - Oehlschläger, Susanne
A1  - Prochnow, Annette
A1  - Wiesener, Cornelia
A1  - Xylander, Willi E. R.
T1  - Offenhaltung durch Feuer
Y1  - 2004
SN  - 3-540-22449-1
ER  - 
TY  - JOUR
A1  - Wanner, Manfred
A1  - Burkart, Bettina
A1  - Hinrichsen, Arne
A1  - Prochnow, Annette
A1  - Schlauderer, Ralf
A1  - Wiesener, Cornelia
A1  - Zierke, Irene
A1  - Xylander, Willi E. R.
T1  - Offenhaltung durch mechanische Bodenfreilegung
Y1  - 2004
SN  - 3-540-22449-1
ER  - 
TY  - JOUR
A1  - Wanner, Manfred
A1  - Elmer, Michael
A1  - Sommer, Michael
A1  - Funk, Roger
A1  - Puppe, Daniel
T1  - Testate amoebae colonizing a newly exposed land surface are of airborne origin
JF  - Ecological indicators : integrating monitoring, assessment and management
N2  - We hypothesized that at the very beginning of terrestrial ecosystem development, airborne testate amoebae play a pivotal role in facilitating organismic colonization and related soil processes. We, therefore, analyzed size and quantity of airborne testate amoebae and immigration and colonization success of airborne testate amoebae on a new land surface (experimental site "Chicken Creek", artificial post-mining water catchment). Within an altogether 91-day exposure of 70 adhesive traps, 12 species of testate amoebae were identified to be of airborne origin. Phryganella acropodia (51% of all individuals found, diameter about 35-45 mu m) and Centropyxis sphagnicola (23% of all individuals found, longest axis about 55-68 mu m), occurred most frequently in the adhesive traps. We extrapolated an aerial amoeba deposition of 61 individuals d(-1) m(-2) (living and dead individuals combined). Although it would be necessary to have a longer sequence (some additional years), our analysis of the "target substrate" of aerial immigration (catchment site) may point to a shift from a stochastic (variable) beginning of community assembly to a more deterministic (stable) course. This shift was assigned to an age of seven years of initial soil development. Although experienced specialists are necessary to conduct these time-consuming studies, the presented data suggest that terrestrial amoebae are suitable indicators for initial ecosystem development and utilization.
KW  - Artificial water catchment
KW  - Immigration by air
KW  - Biological indicator
Y1  - 2015
U6  - https://doi.org/10.1016/j.ecolind.2014.07.037
SN  - 1470-160X
SN  - 1872-7034
VL  - 48
SP  - 55
EP  - 62
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wanner, Manfred
A1  - Seidl-Lampa, Barbara
A1  - Höhn, Axel
A1  - Puppe, Daniel
A1  - Meisterfeld, Ralf
A1  - Sommer, Michael
T1  - Culture growth of testate amoebae under different silicon concentrations
JF  - European journal of protistology
N2  - Testate amoebae with self-secreted siliceous shell platelets ("idiosomes") play an important role in terrestrial silicon (Si) cycles. In this context, Si-dependent culture growth dynamics of idiosomic testate amoebae are of interest. Clonal cultures of idiosomic testate amoebae were analyzed under three different Si concentrations: low (50 mu mol L-1), moderate/site-specific (150 mu mol L-1) and high Si supply (500 mu mol L-1). Food (Saccharomyces cerevisiae) was provided in surplus. (i) Shell size of four different clones of idiosomic testate amoebae either decreased (Trinema galeata, Euglypha filifera cf.), increased (E. rotunda cf.), or did not change (E. rotunda) under the lowest Si concentration (50 mu mol Si L-1). (ii) Culture growth of idiosomic Euglypha rotunda was dependent on Si concentration. The more Si available in the culture medium, the earlier the entry into exponential growth phase. (iii) Culture growth of idiosomic Euglypha rotunda was dependent on origin of inoculum. Amoebae previously cultured under a moderate Si concentration revealed highest sustainability in consecutive cultures. Amoebae derived from cultures with high Si concentrations showed rapid culture growth which finished early in consecutive cultures. (iv) Si (diluted in the culture medium) was absorbed by amoebae and fixed in the amoeba shells resulting in decreased Si concentrations. (C) 2016 Elsevier GmbH. All rights reserved.
KW  - Amoebal silicon
KW  - Sommer et al. 2006
KW  - Biosilicification
KW  - Consumption
KW  - Culture growth dynamics
KW  - Euglyphida
KW  - Terrestrial Si cycle
Y1  - 2016
U6  - https://doi.org/10.1016/j.ejop.2016.08.008
SN  - 0932-4739
SN  - 1618-0429
VL  - 56
SP  - 171
EP  - 179
PB  - Royal Society of Chemistry
CY  - Jena
ER  -