Jakob von Uexküll’s umwelt theory opens new perspectives for understanding animal extinction. The umwelt is interpreted here as a sum of structural correspondences between an animal’s subjective experience, ecosystem, physiology, and behaviour. The global environmental crisis disturbs these meaning-connections. From the umwelt perspective, we may describe extinction as umwelt collapse: The disintegration of an animal’s umwelt resulting from the cumulative errors in semiotic processes that mediate an organism and ecosystem. The loss of umwelt-ecosystem integration disturbs “ecological memory,” which provides the (...) ecosystem with adaptive modelling and self-design capacities. Making a distinction between core and mediated umwelts, and describing different types of umwelt collapse, are suitable methods for more detailed analysis. The concept of umwelt collapse enables the reinterpretation of extinction, from an internal perspective, as a semiotic breakdown. Such an approach may help us map scenarios of animal extinction, and may lead to successful compensation strategies in adapting to environmental change. (shrink)

Growing ecological problems have raised the need for conceptual tools dedicated to studying semiotic processes in cultural-ecological systems. Departing from both ecosemiotics and cultural semiotics, the concept of an ecosemiosphere is proposed to denote the entire complex of semiosis in an ecosystem, including the involvement of human cultural semiosis. More specifically, the ecosemiosphere is a semiotic system comprising all species and their umwelts, alongside the diverse semiotic relations (including humans with their culture) that they have in the given ecosystem, and (...) also the material supporting structures that enable the ecosemiosphere to thrive. Drawing parallels with Juri Lotman’s semiosphere concept, the ecosemiosphere is characterized by its heterogeneity, asymmetry, and boundedness. But unlike Lotman’s concept, the ecosemiosphere is not characterized by an overall boundedness, that is, by the presence of external binary boundaries and the shared identity arising from this unity. The involvement of human culture in the ecosemiosphere manifests in interspecies dialogues and semiotic engagements. We need to scrutinize what affordances and semiotic resources culture could offer to nonhuman species and how culture could, by semiotic means, raise the integrity, stability, and resiliency of the ecosystem. The ecosemiosphere is a grounded semiosphere. (shrink)

Part of the task in studying human evolution is developing a deep understanding of what we share, and do not share, with other life, as a mammal, a primate, a hominin, and as members of the genus Homo. A key aspect of this last facet is gained via the examination of the genus Homo across the Pleistocene. By at least the later Pleistocene members of the genus Homo began to habitually insert shared meaning into and onto their world forming one (...) of the bases of contemporary human abilities to develop a distinctive human niche and human culture. Meaning-laden cultural dynamics constitute the core of a ubiquitous semiotic ecosystem, which in turn structures the architecture of the complex niches and niche construction processes that characterize humanity today. Here, I offer a summary of Pleistocene evolution of the genus Homo and an argument for when and how that extensive and distinctive capacities for shared meaning-making and a particularly dynamic niche construction emerged. (shrink)