Contents: Masanori Takada and Isao Iwasa, Size distributions in plant populations in the presence of shade-effects (2-20); Norio Yamamura, The relationship between weighting of generations and the stability of a population (21-43); Hironori Hirata, Characteristics of evolution in a predator-prey Volterra model (English) (44-53); Lisao Nakajima and Kiyohito Sakabe, Succession in predator-prey systems (54-74); Kazuo Kishimoto, Masayasu Mimura and Kiyoshi Yoshida, On the solution of spatial segregation in a system of competitive interaction-diffusion equations (75-91); Nobuo Tamachi and Hirotsugu Matsuda, Evolution of altruism. II (92-110); Suguru Iizuka, Kazunari Ishii and Hirotsugu Matsuda, The effects of size and environmental fluctuations on various types of phenomena (111-140); Naoyuki Takahata, Estimation of evolutionary distance under a mathematical model of extranuclear DNA molecule (English) (141-156); Kenichi Aoki, Polygenic models of group selection for altruism (English) (157-167); Takeshi Teramoto, Nanako Shigesada and Hirokichi Kawasaki, The variety of species and the distribution of the number of individuals - general size distributions in growing systems (168-181); Nanako Shigesada, Takeshi Teramoto and Hirokichi Kawasaki, Structure and stability of various competitive systems (182-202); Yuki Kuramoto, Generation of collective rhythms by self-entrainment phenomena (203-212).
{The articles of this volume will not be indexed individually.}