Claim: Hesse worked in the spirit of Karl August Möbius (German zoologist) with biogeography and ecology of vertebrates and in 1945, he published his Tiergeographie auf Ökologischer Grundlage.
Evidence: Karl August Möbius (7 February 1825 in Eilenburg – 26 April 1908 in Berlin) was a German zoologist who was a pioneer in the field of ecology and a former director of the Museum für Naturkunde in Berlin. In 1924, he published his Tiergeographie auf Ökologischer Grundlage.