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In the last years of his life, it was a great concern of Mathias Küster (1950–2022) to write down his ideas on the gestalt biology of snakes, even though he no longer saw himself in a position to do so alone. However, the project, which was started together in 2021, could only be completed after his death. With regards to content, the… Read More

The approximately 398 species of living parrots (macaws, parakeets, cockatoos, etc.) comprise a more or less homogeneous group of birds found mostly in tropical and subtropical regions. No other group of wild birds has attracted such strong human interest, and conse- quently parrots are the most popular avian pets around the world, from the… Read More

This study examines the phenomenon of the so-called »cup-and-ring marked rocks« from the late Neolithic and early Bronze Age, as they occur particularly in Scotland and on the Atlantic fringe of Western Europe. This research report has its focus on their aesthetic ef- fects. A phenomenology of their appearance is worked out by starting with the… Read More

Until the 1980s, the »Rising Picture Method« was valued in anthroposophical contexts as one of the »Picture-forming Methods« and was considered particularly suitable for making statements on the quality of plants and plant extracts. It turned out, however, that many of these assumptions did not hold true; for example, the relationship of the… Read More

There are already a number of works on the biology of tree shapes, which primarily deal with conifers and European deciduous trees. In the present essay, an attempt is made to characterize the tree shapes within the worldwide landscape forms and climatic zones more
precisely and to compare them with each other… Read More

Starting from the botanical concept of plant type, the question is raised whether the concept of type can also be applied to plant communities. This is possible with the help of plant sociology, which has developed a comprehensive methodology for this purpose. The individual steps of this procedure are described and brought into relation to… Read More