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| 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | |
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| Wittlinger, M., Wolf, H., Wehner, R.: (2007): |
id 35 |
| Hair plate mechanoreceptors associated with body segments are not necessary for three-dimensional path integration in desert ants, Cataglyphis fortis |
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| Nørgaard, T., Henschel, J.R., Wehner, R. (2007): |
id 36 |
| Use of local cues in the night-time navigation of the wandering
desert spider Leucorchestris arenicola (Araneae, Sparassidae) |
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| Narendra A., Cheng K., Wehner R.: (2007): |
id 37 |
| Acquiring, retaining and integrating memories of the outbound distance in the
Australian desert ant Melophorus bagoti |
| The Journal of Experimental Biology 210, 570-577 |
| ABSTRACT |  | ZORA | |
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| Wehner, R.,Fukushi, T.,Isler, K.: (2007): |
id 38 |
| On Being Small: Brain Allometry in Ants |
| Brain Behav Evol 2007;69:220-228 |
| ZORA | |
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| Grah, G., Wehner, R. and Ronacher, B. (2007): |
id 88 |
| Desert ants do not acquire and use a three-dimensional vector. |
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| Hegedüs, R., Åkesson, S., Wehner, R. and Horvath, G. (2007): |
id 89 |
| Could Vikings have navigated under foggy and cloudy conditions by skylight polarization? On the atmospheric optical prerequisites of polarimetric Viking navigation under foggy and cloudy skies. |
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Abstract:
In sunshine, the Vikings navigated on the open sea using sundials. According to a widespread hypothesis, when the Sun was occluded by fog or clouds the Vikings might have navigated by skylight polarization detected with an enigmatic birefringent crystal(sunstone). There are two atmospheric optical prerequisites for this alleged polarimetric Viking navigation under foggy/cloudy skies: (1) the degree of linear polarization p of skylight should be high enough and (2) at a given Sun position, the pattern of the angle of polarization a of the foggy/cloudy sky should be similar to that of the clear sky. Until now, these prerequisites have not been investigated. Using full-sky imaging polarimetry, we measured the p- and a-patterns of Arctic foggy and cloudy skies when the Sun was invisible. These patterns were compared with the polarization patterns of clear Arctic skies. We show here that although prerequisite (2) is always fulfilled under both foggy and cloudy conditions, if the fog layer is illuminated by direct sunlight, prerequisite (1) is usually satisfied only for cloudy skies. In sunlit fog, the Vikings could have navigated by polarization only, if p of light from the foggy sky was sufficiently high. |
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| Müller, M. and Wehner, R. (2007): |
id 90 |
| Wind and sky as compass cues in desert ant navigation |
| Naturwissenschaften (2007) 94, 589-594 |
| ABSTRACT | | ZORA | |
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| Wehner, R. (2007): |
id 91 |
| The desert ant's navigational toolkit: procedural rather than positional knowledge. |
| Proceedings of the 63rd Annual Meeting of the Institute of Navigation 2007:1-14, April 23 - 25, Cambridge, Massachusetts |
| ABSTRACT | ZORA | |
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| Wittlinger, M., Wehner, R. and Wolf, H. (2007): |
id 92 |
| The desert ant odometer: a stride integrator that accounts for stride length and walking speed. |
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