In recent years experimental and numerical studies have shown that chaos
is a widespread phenomenon throughout the biological hierarchy ranging
from simple enzyme reactions to ecosystems. Although a coherent picture
of the fundamental mechanisms responsible for chaotic dynamics has
started to appear it is not yet clear what the implications of such
dynamics are for biological systems in general. In some systems it
appears that chaotic dynamics are associated with a pathological condi-
tion. In other systems the pathological condition has regular periodic
dynamics whilst the normal non-pathological condition has chaotic dyna-
mics. Since chaotic behaviour is so ubiquitous in nature and since the
phenomenon raises some fundamental questions about its implications for
biology it seemed timely to organize an interdisciplinary meeting at
which leading scientists could meet to exchange ideas, to evaluate the
current state of the field and to stipulate the guidelines along which
future research should be directed. The present volume contains the
contributions to the NATO Advanced Research Workshop on "Chaos in
Biological Systems" held at Dyffryn House, St. Nicholas, Cardiff, U. K.,
December 8-12, 1986. At this meeting 38 researchers with highly
different backgrounds met to present their latest results through
lectures and posters and to discuss the applica- tions of non-linear
techniques to problems of common interest. . In spite of their
involvement in the study of chaotic dynamics for several years many of
the participants met here for the first time.