Skip to Main content Skip to Navigation
Journal articles

Geochemistry of an endorheic thalassohaline ecosystem: the Dziani Dzaha crater lake (Mayotte Archipelago, Indian Ocean)

Abstract : Dziani Dzaha is a maar the age of which is close to 4000 years. While its water is thought to have originated from seawater it is now considered as an extreme environment due to its hypersaline and alkaline characteristics. Those extreme features have led to the simplification of the trophic network. Cyanobacteria account for up to 95% of the photosynthetic biomass. The main biogeochemical processes, i.e. photosynthesis, bacterial sulfate reduction and methanogenesis could explain the current water composition. As far as we know, this ecosystem could be unique on Earth, extending the nature and chemical limits of aquatic inland ecosystems.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03252301
Contributor : Marc Troussellier <>
Submitted on : Monday, June 7, 2021 - 3:59:30 PM
Last modification on : Thursday, July 29, 2021 - 10:06:08 AM
Long-term archiving on: : Wednesday, September 8, 2021 - 7:14:32 PM

File

Sarazin G. et al. (2021). Geoc...
Publisher files allowed on an open archive

Identifiers

Citation

Gérard Sarazin, Didier Jézéquel, Christophe Leboulanger, Eric Fouilland, Emilie Le Floc'H, et al.. Geochemistry of an endorheic thalassohaline ecosystem: the Dziani Dzaha crater lake (Mayotte Archipelago, Indian Ocean). Comptes Rendus Géoscience, Elsevier Masson, 2020, ⟨10.5802/crgeos.43⟩. ⟨hal-03252301⟩

Share

Metrics

Record views

84

Files downloads

96