TY  - JOUR
A1  - Baumgartner, Werner
A1  - Fidler, Florian
A1  - Weth, Agnes
A1  - Habbecke, Martin
A1  - Jakob, Peter
A1  - Butenweg, Christoph
A1  - Böhme, Wolfgang
T1  - Investigating the locomotion of the sandfish in desert sand using NMR-Imaging
JF  - PLOS ONE
N2  - The sandfish (Scincus scincus) is a lizard having the remarkable ability to move through desert sand for significant distances. It is well adapted to living in loose sand by virtue of a combination of morphological and behavioural specializations. We investigated the bodyform of the sandfish using 3D-laserscanning and explored its locomotion in loose desert sand using fast nuclear magnetic resonance (NMR) imaging. The sandfish exhibits an in-plane meandering motion with a frequency of about 3 Hz and an amplitude of about half its body length accompanied by swimming-like (or trotting) movements of its limbs. No torsion of the body was observed, a movement required for a digging-behaviour. Simple calculations based on the Janssen model for granular material related to our findings on bodyform and locomotor behaviour render a local decompaction of the sand surrounding the moving sandfish very likely. Thus the sand locally behaves as a viscous fluid and not as a solid material. In this fluidised sand the sandfish is able to “swim” using its limbs.
KW  - magnetic resonance imaging
KW  - body limbs
KW  - swimming
KW  - lizards
KW  - deserts
Y1  - 2008
U6  - https://doi.org/10.1371/journal.pone.0003309
SN  - 1932-6203
VL  - 3
IS  - 10
PB  - Plos
CY  - San Francisco, California, US
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Tillmann, Urban
A1  - Aletsee, Ludwig
T1  - Distribution of Carbon Among Photosynthetic End Products in the Bloom-Forming Arctic Diatom Thalassiosira antarctica COMBER / Tillmann, U. ; Baumann, M.E.M. ; Aletsee, L.
JF  - Polar Biology. 10 (1989), H. 3
Y1  - 1989
SN  - 0722-4060
SP  - 231
EP  - 238
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Thomas, D.
A1  - Gleitz, M.
T1  - Efficiency of carbon assimilation and photoacclimation in a small unicellular Chaetoceros species from the Weddel Sea (Antarctica): Influence of temperature and irridiance / Thomas, D. ; Baumann, M.E.M. ; Gleitz, M.
JF  - Journal of Experimental Marine Biology and Ecology. 157 (1992), H. 2
Y1  - 1992
SN  - 0022-0981
SP  - 195
EP  - 209
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Semeneh, M.
A1  - Dehairs, F.
A1  - Elskens, M.
T1  - Nitrogen uptake regime and phytoplankton community structure in the Southern Ocean / Semeneh, M. ; Dehairs, F. ; Elskens, M. ; Baumann, M.E.M. ; Kopczynska, E.E. ; Lancelot, C. ; Goeyens, L.
JF  - Journal of Marine Systems. 17 (1998), H. 1-4
Y1  - 1998
SN  - 0924-7963
SP  - 159
EP  - 177
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Schwarz, Sonja
A1  - Kotliar, Konstantin
A1  - Eynatten, Maximilian von
A1  - Trucksaess, Arno
A1  - Burckhardt, Klaus
A1  - Lutz, Jens
A1  - Heemann, Uwe
A1  - Lanzl, Ines
T1  - Non-diabetic chronic kidney disease influences retinal microvasculature
JF  - Kidney and Blood Pressure Research
Y1  - 2009
SN  - 1423-0143
VL  - 32
IS  - 6
SP  - 428
EP  - 433
PB  - -
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Rousseau, V.
A1  - Vaulot, D.
A1  - Casotti, R.
T1  - The life cycle of Phaeocystis (Prymnesiophycae): evidence and hypotheses / Rousseau, V. ; Vaulot, D. ; Casotti, R. ; Cariou, V. ; Lenz, J. ; Gunkel, J. ; Baumann, M.
JF  - Journal of Marine Systems. 5 (1994), H. 1
Y1  - 1994
SN  - 0924-7963
SP  - 23
EP  - 39
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Lara, R.J.
A1  - Hubberten, D.N.
A1  - Thomas, D.N.
T1  - Dissolved organic matter studies in enclosed systems: Application of hydophobic fractionation for the assessment of organic nitrogen dynamics / Lara, R.J. ; Hubberten, U. ; Thomas, D.N. ; Baumann, M.E.M. ; Kattner, G.
JF  - Journal of Marine Systems. 13 (1997), H. 1-4
Y1  - 1997
SN  - 0924-7963
SP  - 155
EP  - 161
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Lancelot, C.
A1  - Brandini, F.
A1  - Sakshaug, E.
T1  - The taxonomic identity of the cosmopolitan prymnesiophyte Phaeocystis, a morphological and ecophysiological approach / Baumann, M.E.M. ; Lancelot, C. ; Brandini, F. ; Sakshaug, E. ; John M.
JF  - Journal of Marine Systems. 5 (1994), H. 1
Y1  - 1994
SN  - 0924-7963
SP  - 5
EP  - 22
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Jahnke, J.
T1  - Chemical and Physical Effects on the Shape and Growth of the Diatom Biddulphia sinensis GREVILLE in Batch Cultures: A Contribution to Bioindication in Plankton Ecology / Jahnke, J. ; Baumann, M.
JF  - Hydrobiological Bulletin . 17 (1983), H. 1
Y1  - 1983
SN  - 0165-1404
SP  - 5
EP  - 20
ER  - 
TY  - JOUR
A1  - Baumann, Marcus
A1  - Hirche, H.-J.
A1  - Kattner, G.
A1  - Gradinger, R.
T1  - Plankton distribution and the impact of copepod grazing on primary production in Fram Strait, Greenland Sea / Hirche, H.-J. ; Baumann, M.E.M. ; Kattner, G.; Gradinger, R.
JF  - Journal of Marine Systems. 2 (1991), H. 3-4
Y1  - 1991
SN  - 0924-7963
SP  - 477
EP  - 494
ER  -