FONTANIER, Christophe; MAMO, Briony; TOUCANNE, Samuel; BAYON, Germain; SCHMIDT, Sabine; DEFLANDRE, Bruno; DENNIELOU, Bernard; JOUET, Gwenael; GARNIER, Eline; SAKAI, Saburo; LAMAS, Ruth Martinez; DUROS, Pauline; TOYOFUKU, Takashi; SALÉ, Aurélien; BELLENEY, Déborah; BICHON, Sabrina; BOISSIER, Audrey; CHÉRON, Sandrine; PITEL, Mathilde; ROUBI, Angélique; ROVERE, Mickaël; GREMARE, Antoine; DUPRÉ, Stéphanie; JORRY, Stéphan

doi:10.1016/j.dsr.2017.11.011

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FONTANIER, Christophe
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]

MAMO, Briony
Japan Agency for Marine-Earth Science and Technology [JAMSTEC]

TOUCANNE, Samuel
Unité Géosciences Marines [GM]

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Ce document a été publié dans

Deep Sea Research Part I: Oceanographic Research Papers. 2018-01, vol. 131, p. 93-100

Résumé en anglais

In this short communication, we present a multidisciplinary study of sedimentary records collected from a deep-sea interfluve proximal to the mouths of major northwestern Madagascan rivers. For the last 60 years, the seafloor has been repeatedly disturbed by the deposition of organic rich, tropical, terrestrial sediments causing marked reductions in benthic biodiversity. Increased soil erosion due to local land-use, deforestation and intensifying tropical cyclones are potential causes for this sedimentary budget and biodiversity shift. Our marine sedimentary records indicate that until now, these conditions have not occurred within the region for at least 20,000 years.< Réduire

Mots clés en anglais

Multidisciplinary study

Benthic foraminifera

Land-use

Tropical cyclones