Zum Andenken an Marco Kleber und zum Weiterdenken geben wir diesen Band heraus. Er enthält seine noch nicht publizierte Masterarbeit, eine Skizze der unvollendeten Dissertation und weitere veröffentlichte und unveröffentlichte Artikel. Wir halten das für angemessen, weil diese Texte anspruchsvoll und innovativ sind. Thematisch kreisen sie um Georg Wilhelm Friedrich Hegel, dessen Logik und praktische Philosophie sprachanalytisch erweitert wird. Daran schließen sich Untersuchungen zur Sprachphilosophie von Ludwig Wittgenstein und zur Ökonomiekritik von Karl Marx an. Es folgen Texte zu aktuellen (...) Problemen der Globalisierung und zur Tierethik. Marco war keineswegs ein purer Philologe, sondern ein eigenständiger Philosoph, der sich mit den gegenwärtigen Krisen auseinandergesetzt hat. (shrink)

Network analysis as a tool for ecological interactions studies has been widely used since last decade. However, there are few studies on the factors that shape network patterns in communities. In this sense, we compared the topological properties of the interaction network between flower-visiting social wasps and plants in two distinct phytophysiognomies in a Brazilian savanna (Riparian Forest and Rocky Grassland). Results showed that the landscapes differed in species richness and composition, and also the interaction networks between wasps and plants (...) had different patterns. The network was more complex in the Riparian Forest, with a larger number of species and individuals and a greater amount of connections between them. The network specialization degree was more generalist in the Riparian Forest than in the Rocky Grassland. This result was corroborated by means of the nestedness index. In both networks was found asymmetry, with a large number of wasps per plant species. In general aspects, most wasps had low niche amplitude, visiting from one to three plant species. Our results suggest that differences in structural complexity of the environment directly influence the structure of the interaction network between flower-visiting social wasps and plants. (shrink)