...Azusa Kage; Chiharu Hosoya; Shoji A. Baba; Yoshihiro Mogami SUMMARY Motile aquatic microorganisms are known to self-organize into bioconvection patterns. The swimming activity of a population of microorganisms leads to the emergence of macroscopic patterns of density under the influence of gravity...

...C. Rosie Williams; Martin Alan Bees SUMMARY The term bioconvection encapsulates the intricate patterns in concentration, due to hydrodynamic instabilities, that may arise in suspensions of non-neutrally buoyant, biased swimming microorganisms. The directional bias may be due to light (phototaxis...

...Yoshihiro Mogami; Akiko Yamane; Atsuko Gino; Shoji A. Baba SUMMARY Bioconvection is a result of the negative gravitactic behavior of microorganisms. When the top-heavy density gradient generated by gravitaxis grows sufficiently large, an overturning convection occurs leading to a formation...

...András Czirók; Imre M. Jánosi; John O. Kessler ABSTRACT Bioconvection occurs when a macroscopic nonuniformity of the concentration of microbial populations is generated and maintained by the directional swimming of the organisms. This study investigated the properties of the patterns near the onset...