FN Archimer Export Format PT J TI Geochemistry of an endorheic thalassohaline ecosystem: the Dziani Dzaha crater lake (Mayotte Archipelago, Indian Ocean) BT AF Sarazin, Gérard Jezequel, Didier LEBOULANGER, Christophe FOUILLAND, Eric LE FLOC'H, Emilie Bouvy, Marc Gerard, Emmanuelle Agogué, Hélène Bernard, Cédric Hugoni, Mylène Grossi, Vincent Trousselier, Marc Ader, Magali AS 1:1;2:1;3:7;4:2;5:2;6:2;7:1;8:3;9:4;10:5;11:6;12:2;13:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:; C1 Université de Paris, Institut de Physique du Globe de Paris, CNRS, F-75005 Paris, France UMR 9190, MARBEC, CNRS-Université deMontpellier -IRD - IFREMER, 34095 Montpellier Cedex 5, France UMR 7266 LIENSs, La Rochelle Université–CNRS, 17000 La Rochelle, France Museum National d’Histoire Naturelle, CP 39, 75231 Paris cedex 05, France Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAE, VetAgro Sup, UMR EcologieMicrobienne, F-69622 Villeurbanne, France Univ Lyon, Univ Lyon 1, CNRS, ENSL, Laboratoire de Géologie de Lyon : Terre, Planètes, Environnement, F-69622 Villeurbanne, France UMR 9190, MARBEC, CNRS-Université deMontpellier -IRD - IFREMER, 34095 Montpellier Cedex 5, France C2 IPGP, FRANCE CNRS, FRANCE UNIV LA ROCHELLE, FRANCE MNHN, FRANCE UNIV LYON, FRANCE UNIV LYON, FRANCE IRD, FRANCE UM MARBEC IN WOS Cotutelle UMR copubli-france copubli-univ-france IF 2.241 TC 6 UR https://archimer.ifremer.fr/doc/00667/77948/80128.pdf https://archimer.ifremer.fr/doc/00667/77948/81365.pdf LA English DT Article DE ;Thalassohaline lake;Endorheic ecosystem;Cyanobacteria;Methane emission;Biogeochemistry;Mayotte AB 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 PY 2020 SO Comptes Rendus Geoscience SN 1631-0713 PU Elsevier VL 352 IS 8 UT 000613921700002 BP 559 EP 577 DI 10.5802/crgeos.43 ID 77948 ER EF