• Current human ecology in the Amazon and beyond: A multi-scale ecosemiotic approach 

      Tønnessen, Morten (Peer reviewed; Journal article, 2020)
      Umwelt theory is an expression of von Uexküll’s subjective biology and as such usually applied in analysis of individual animals, yet it is fundamentally relational and therefore also suitable for analysis of more complex ...
    • The Evolutionary Origin(s) of the Umwelt 

      Tønnessen, Morten (Journal article, 2022)
      Although Jakob von Uexküll´s Umwelt theory is not mentioned in Jablonka and Ginsburg´s Target article, von Uexküll´s theory is clearly relevant in the context of the article, with the authors´ emphasis on the origin of ...
    • Making the Umwelt Bubble of the Modern Synthesis Burst 

      Tønnessen, Morten (Peer reviewed; Journal article, 2021-05)
      Noble rightly emphasizes that some modern evolutionary biologists´ neglect of agency is consequential with regard to our understanding of the natural world and real-world ecological developments. I elaborate on biosemiotic ...