Name	Info	Provider	Link
	subscription/membership/fee required	Taylor & Francis	https://www.tandfonline.com/doi/full/10.1080/09593331003770289
Supporting Data and Materials for the article	free resource	figshare - Data	https://figshare.com/articles/by-resource-doi/10.1080/09593331003770289
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/20718291