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There have been studies on the number of species on humans and in various other environments. I was wondering how many species including: viruses, bacteria, yeasts, and fungi inhabit ordinary farm yoghurt, supermarket yoghurt, and cheeses like parmesan, edam, and blue.

I can find some studies, but not an actual count of species diversity in living dairy products.

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    $\begingroup$ Does the work you found include that by Rachel Dutton (theduttonlab.com/publications-1/2017/6/14/publications)? It would be helpful if you could summarize what you have already found. $\endgroup$ – tyersome Jul 10 '19 at 16:27
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    $\begingroup$ Nice find, I didn't see that. asmscience.org/content/book/10.1128/9781555818593.chap12 sais that there are relatively few species in cheeses. And this study suggests that there are 5-7 main bacteria in the ecosystems, although I didnt find a specific reference on the total diversity. ncbi.nlm.nih.gov/pmc/articles/PMC4222527/figure/F3 $\endgroup$ – aliential Jul 11 '19 at 9:26
  • $\begingroup$ Great — I hope you'll post an answer your own question once you feel like you've digested the available literature! $\endgroup$ – tyersome Jul 12 '19 at 1:45
  • $\begingroup$ We did some work on mozzarella cheese: ncbi.nlm.nih.gov/pubmed/30621867. However, we only studied bacteria. The group of Danilo Ercolini is leading a lot of work in metagenomics of several kinds of cheese (I mostly took inspiration from their work). You can look there for some reference. $\endgroup$ – Fabio Marroni Aug 30 '19 at 13:23

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