Guillaume Leduc

Supplementary material to "Assessing the potential of Individual Foraminifera Analyses (δ 18 O) to reconstruct variability, seasonality and extremes in the tropical Indian Ocean"

Yohan Lichterfeld, Guillaume Leduc, Kaustubh Thirumalai, Laurence Vidal et autres

fr (code pays fourni par la source)

Assessing the potential of Individual Foraminifera Analyses (δ 18 O) to reconstruct variability, seasonality and extremes in the tropical Indian Ocean

Yohan Lichterfeld, Guillaume Leduc, Kaustubh Thirumalai, Laurence Vidal et autres

Abstract. The Indian Ocean plays a critical role in the global climate system by regulating heat and moisture transport, influencing major fluxes that drive atmospheric circulation. Individual foraminiferal analyses (IFA) of the stable oxygen isotope composition (δ18O) of their test provides a …

fr, us (code pays fourni par la source)

Individual foraminiferal δ¹⁸O analyses (IFA) from Late Holocene core-tops sediments from Indian Ocean

Yohan Lichterfeld, Guillaume Leduc, Kaustubh Thirumalai, Laurence Vidal et autres

This dataset contains measurements of individual foraminiferal δ¹⁸O (‰ VPDB) (IFA) from Late Holocene core-top sediments at three sites across the tropical Indian Ocean: MD96-2060 (40.46°E, 8.30°S, 2026m), Site NIOP 905 (51.95°E, 10.76°N, 1575m) and IODP Site U1467 (73.17°E, 4.5°N, 487.4 m). …

fr, us (code pays fourni par la source)

Exploited marine fish distributions in Europe under past climates

Sarah Beauvais, Ben Lamine, Tatiana Théodoropoulou, Gabriele Carenti et autres

Species distribution modelling is widely used to assess the responses of exploited marine species to environmental change, as shifts in their spatial distributions directly affect food security and fisheries-dependent socio-economic activities. To date, most studies have focused on forecasting future range shifts …

fr (code pays fourni par la source)

Isobiography of the first farmers: effects of age-estimating referential and statistical models on reconstructing infant life from dentinal isotopic sequences

Samuel Bédécarrats, Mélie Le Roy, Kerry L. Sayle, Frédérique Blaizot et autres

The use of isotopic sequence allowing a longitudinal life tracking of an individual (isobiography), by taking a series of isotope measurements on dentine sections and estimating the age of the individual at their formation, provides a means of tracing dietary and environmental …

fr, Algérie, gb (code pays fourni par la source)

Plant-wax n-alkanes from the central Congo Basin as palaeo-environmental and -climatic proxies

Mélanie Guardiola, Gaël U.D. Bouka, Carolia Abaye, Johanna Menges et autres

International audience

Increased rainfall in southern Central America under glacial climate conditions

Elise Luciani, Guillaume Leduc, Yannick Garcin, Frauke Rostek et autres

• δD of n -alkanes shows stronger rainfall in LGM than today in southern Central America. • Such northward ITCZ shift is due to an increased latitudinal SST gradient in the EEP. • PMIP4 models simulations support this ocean-atmosphere interaction during the …

fr (code pays fourni par la source)

Species integrity and ploidy stability despite extensive gene flow via introgressive hybridization: the case of Betula species in Iceland

Guillaume Leduc, Ægir Thór Thórsson, Kesara Anamthawat-Jónsson

BACKGROUND: Introgressive hybridization is common in natural birch woodlands in Iceland, where two birch (Betula) species (diploid dwarf birch B. nana and tetraploid tree birch B. pubescens) coexist and hybridize readily. Our previous morphological, cytogenetic and palynological studies show that triploid hybrids …

fi, is (code pays fourni par la source)

Ridge extinction in the Mascarene Basin due to the Réunion hotspot: preliminary results of the MASC Cruise

Vincent Famin, Martin Danišík, Sidonie Révillon, Sébastien Zaragosi et autres

The Mascarene Basin, between Madagascar, the Seychelles Plateau, and the Réunion hotspot track, is an ocean lithosphere whose geodynamic evolution remains enigmatic in many aspects. Part of the enigma concerns the unexplained extinction of the Mascarene mid-ocean ridge ca. 62 Ma ago …

fr, re, au (code pays fourni par la source)

Calibrating Individual Foraminifera Analysis for Climate reconstruction in the Western Indian Ocean: Assessing Seasonal and Interannual Variability

Yohan Lichterfeld, Guillaume Leduc, Kaustubh Thirumalai, Laurence Vidal et autres

The Indian Ocean is affected by seasonal and interannual climate variability, with large consequences on the water cycle over adjacent landmasses. The northern Indian Ocean influences the African and Asian monsoon systems, and its seasonal and interannual variability interacts with El Niño-Southern …

fr, us (code pays fourni par la source)

Postglacial flooding and Holocene climate shifts in the Persian Gulf

Abdolmajid Naderi Beni, Guillaume Leduc, Morteza Djamali, Arash Sharifi et autres

ABSTRACT Postglacial flooding of the Persian Gulf (PG) was important in shaping human history and driving landscape changes in the region. However, there is a paucity of data regarding the postglacial transgression. The position of the PG at the edge of major …

ir, fr, gb, us, de, nz (code pays fourni par la source)

Livre Blanc - Paléoclimats et Paléoenvironnements

Pascale Braconnot, Guillaume Leduc, Fabien Arnaud, Doris Barboni et autres

National audience

fr, in, Éthiopie, Afrique du Sud, ch (code pays fourni par la source)