1. Three-dimensional models for humic acids and soil organic matter

   • H. -R. Schulten
   • M. Schnitzer

   OriginalPaper Pages: 487 - 498

2. Vogelwelt und Klimaverände-rung im 16. Jahrhundert

   • Ragnar K. Kinzelbach

   OriginalPaper Pages: 499 - 508

3. An evolutionary perspective on signaling in behavior and immunology

   • Kurt A. McKean
   • Marlene Zuk

   OriginalPaper Pages: 509 - 516

4. Tricky relatives: Consecutive dichotomous speciation of gorilla, chimpanzee and hominids testified by immunological determinants

   • K. Bauer
   • A. Schreiber

   Short Communications Pages: 517 - 520

5. Time can be traded for intensity in the lower auditory system

   • B. Grothe
   • T. J. Park

   Short Communications Pages: 521 - 523

6. Trail pheromone of two formicine ants,Camponotus silvicola andC. rufipes (Hymenoptera: Formicidae)

   • E. Übler
   • F. Kern
   • A. B. Attygalle

   Short Communications Pages: 523 - 525

7. Nonrandom search geometry in subterranean termites

   • S. K. Robson
   • M. G. Lesniak
   • V. Fourcassié

   Short Communications Pages: 526 - 528

8. Buchbesprechungen

   • H. Pfanz
   • L. Jaenicke

   BookReview Pages: 528 - 529

9. Naturwissenschaften aktuell

   News Pages: 530 - 532