I am not sure if the Quanta magazine is reputable or not, but I had to read this article after noting the allusion to microbes and hyenas marking their territory! Also, one of the researchers teaches at my med school alma mater, Wayne State.
The concept of holobiont and environmental interactional memes, noting that many microbes spend their time outside the host and thus it’s the interaction niche itself (song, not the singer) fascinates me. A loose parallel stems from Niger, where I grew up. Reforestation efforts have increased the scant forest cover in this arid country more than many other nations, but I think that they have been less effective when using foreign tree species than native ones. Interestingly, similarly, re introduction of native animals in East Africa also improved the bacterial and grass vigor better than simply using domestic animals.
Critiques are welcome.