 Moser's work on ectomycorrhiza, though perhaps unknown to many researchers familiar with his taxonomic work, was notable due to its focus on the fungal partners in the relationship. He engaged in a large amount of research on woodland in the transitional zone between subalpine and alpine habitats. His published results included the description of new taxa. In 1960, Singer referred to Moser as "one of the pioneers of mycorrhiza research, both basic and applied".
