This paper examines the influence exerted on the thought of F.A. Hayek by the work of the biologist and founder of systems theory, Ludwig von Bertalanffy. It is argued first of all that Bertalanffy provided Hayek with a conceptual framework in terms of which he could articulate the philosophical significance of his theoretical psychology. In particular, Bertalanffy’s work afforded Hayek a set o...

The world we live in is a complex system composed of subsystems that interact among each other with each having clearly defined boundaries and coherent dynamics. Systems theory was developed by biologist Ludwig von Bertalanffy in the 1930s to simplify world complexity to human mind and make it more understandable (von Bertalanffy, 1962). The development of the theory came as a result of the aut...

 The population structure of Aphanius anatoliae in Lake Eğirdir-Isparta-Turkey was studied, using 522 fish monthly in 2008. This study were observed in the number of individuals of each sex, age, weight and size compositions. In addition, the total length-weight relationship was calculated as well as the Von Bertalanffy growth equation. A study of the food uptake throughout the year has been ca...

this study was carried out to determine some biological characteristics including age, growth and somatic condition of carasobarbus luteus and capoeta trutta in the turkish part of the tigris river. the examined samples of c. luteus were distributed between ii-ix years of age. the length-weigth relations of females and males were calculated as log w =-4.7314 +3.0113 log fl and log w = -4.7631 +...

Bands on the external surface of the second dorsal-fin spine proved to be a novel method of estimating the age and growth of Centroselachus crepidater. Bands that followed the shape of the spine base were enhanced with an alizarin red derivative. Internal bands in spine cross sections were also examined. The number of both external and internal bands increased with animal size, although most sp...

Von Bertalanffy proposed the differential equation m'(t) = p × m(t) a  - q × m(t) for the description of the mass growth of animals as a function m(t) of time t. He suggested that the solution using the metabolic scaling exponent a = 2/3 (Von Bertalanffy growth function VBGF) would be universal for vertebrates. Several authors questioned universality, as for certain species other models would p...

'Biology is an 'unrestricted' science ... and its phenomena are of a complexity which has severely tested scientific method. Biologists, in fact, have been among the pioneers in establishing ways of thinking in terms of wholes, and it was a biologist, Ludwig von Bertalanffy, who suggested generalising this thinking to refer to any kind of whole, not simply to biological systems.' (Checkland, 19...