"Only certain Norwegian fjords and the Black sea fulfil these criteria"

There are many additional locations in which anoxygenic photosynthesis can occur. Several lakes in Germany and the US are meromictic and have chemoclines in which GSBs and PSBs grow. Additionally thermal environments (hot springs, deep ocean vents) support the growth of phototrophic sulfur bacteria.

http://en.wikipedia.org/wiki/Meromictic

Also, is this directly germane to an article on isorenieratine? Yes, it should likely be mentioned that it tends to co-occur with brown-colored Green Sulfur Bacteria that have BChl e as the primary chlorophyll, but giving further details on GSBs in a carotenoid article seems like it's TMI and a GSB article, not a carot. article, should talk about the environments in which they occur.

Wiki Education assignment: Organic Geochemistry 2023 edit

  This article was the subject of a Wiki Education Foundation-supported course assignment, between 3 April 2023 and 11 June 2023. Further details are available on the course page. Student editor(s): Ivatom27 (article contribs).

— Assignment last updated by Ivatom27 (talk) 01:14, 17 April 2023 (UTC)Reply