Microbialites and lipid biomarker from coral reefs off the volcanic islands Tahiti and Vanuatu and from the nonvolcanic sites Belize and the Maldives

Katrin Heindel, Daniel Birgel, Benjamin Brunner, Volker Thiel, Hildegard Westphal, Eberhard Gischler, Simone B Ziegenbalg, Guy Cabioch, Peter Sjovall & Jörn Ludwig Peckmann
The occurrence of microbialites in post-glacial coral reefs has been interpreted to reflect an ecosystem response to environmental change. The greater thickness of microbialites in reefs with a volcanic hinterland compared to thinner microbial crusts in reefs with a non-volcanic hinterland led to the suggestion that fertilization of the reefal environment by chemical weathering of volcanic rocks stimulated primary productivity and microbialite formation. Using a molecular and isotopic approach on reef-microbialites from Tahiti (Pacific Ocean),...
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