There is no ambisyllabicity (in German)

Ambisyllabicity` is often used by phonologists, especially when they deal with the distribution of long and short vowels in German. Even if it is a very convenient concept, it raises a set of problems; and those problems can be solved if ambisyllabics are considered as geminates. Diachronic facts will be provided in order to reveal where those ambisyllabics come from. It will also be shown that German schwa does not behave like other vowels (it does not build open syllables) and that there is a relationship between (vowel) length and (consonantal) voicing in German.