Here´s the reference for my article "Umwelt and language", which is being published in these days:
Tønnessen, Morten 2015. Umwelt and language. In Ekaterina Velmezova, Stephen J. Cowley and Kalevi Kull, Kalevi (Eds.), Biosemiotic Perspectives on Language and Linguistics (Biosemiotics 13) (Dordrecht: Springer), 77–96. Electronic versioon: DOI 10.1007/978-3-319-20663-9_5.
See also product flyer for the book.