Name	Info	Provider	Link
SILVA LSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/lsu/pubid/12702295
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/femsyr/article-lookup/doi/10.1111/j.1567-1364.2002.tb00072.x