Marie-Pierre Ledru

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Onocerane testifies to dry climatic events during the Quaternary in the Tropics. (2004)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Luiza Spadano Albuquerque, Ana, Sifeddine, Abdelfettah, ...

An unusual molecular fossil (onocerane I) has been detected for the first time in Quaternary lacustrine sediments (Lagoa do Caçó, NE Brazil). This molecule was initially thought to attest to the...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

Onocerane I witnesses to dry climatic phases at the end of Last Glacial Maximum and during the Younger Dryas in Northern Brazil. (2003)

Jacob, Jérémy, Disnar, Jean-Robert, Boussafir, Mohammed, Ledru, Marie-Pierre, Sifeddine, Abdelfettah, Luiza Spadano Albuquerque, Ana, ...

Onocerane-related compounds are very uncommon molecules that are seldom encountered in the plant kingdom and even more rarely in sediments. In living plants, onoceranoids have been isolated from taxa...

The use of quantitative mineralogy linked to palynological studies in palaeoenvironmental reconstruction : the case study of the "Lagoa Campestre" lake, Salitre, Minas Gerais, Brazil (1996)

Bertaux, Jacques, Ledru, Marie-Pierre, Soubiès, François, Sondag, Francis

La comparaison des contenus minéraux déterminés par spectroscopie IRTF et polliniques de sédiments lacustres de la région de Salitre (Brésil) montre que les variations des teneurs en phases...

The last 50.000 years in the neotropics (Southern Brazil) : evolution of vegetation and climate (1996)

Ledru, Marie-Pierre, Soares Braga, P.I., Soubiès, François, Fournier, Marc, Martin, Louis, Suguio, K., ...

In the "Lagoa Campestre" (lake) of Salitre (19°S, 46°46'W, 970 m elev.), there are plant taxa belonging to many ecological groups that are encountered nowhere else at this latitude. Frequent...

Application de la minéralogie quantitative à des reconstructions paléoenvironnementales : l'exemple du lac de la "Lagoa Campestre" (1996)

Bertaux, Jacques, Ledru, Marie-Pierre, Soubiès, François, Sondag, Francis

Les andosols noirs d'altitude : matériaux bioformés traceurs des végétations passées (1996)

Dubroeucq, Didier, Ledru, Marie-Pierre

Marqueurs pédologiques, sédimentologiques et géochimiques de paléoenvironnement à Salitre (Minas Gerais, Brésil) (1996)

Soubiès, François, Bertaux, Jacques, Sondag, Francis, Boulet, René (collab.), Ceccantini, G. (collab.), Delaune, Mireille (collab.), ...

Incidents climatiques et modifications de l'écosystème depuis 3000 ans en Guyane Française et en Amérique du Sud (1996)

Charles-Dominique, P., Absy, M.L., Ledru, Marie-Pierre, Riéra, B., Sardou, C., Servant, Michel, ...

Phases d'ouvertures de la forêt guyanaise détectées par l'analyse palynologique au cours de l'Holocène (1996)

Ledru, Marie-Pierre

Evolution des forêts tropicales d'Amérique du Sud et d'Afrique Centrale Atlantique à l'échelle des 20.000 dernières années (1996)

Turcq, Bruno, Vincens, A., Absy, M.L., Bertaux, Jacques, Ledru, Marie-Pierre, Servant, Michel, ...

Feux, climats et végétations au Brésil Central durant l'Holocène : les données d'un profil de sol à charbons de bois (Salitre, Minas Gerais) (1996)

Vernet, J.L., Wengler, L., Solari, M.E., Ceccantini, G., Fournier, Marc, Ledru, Marie-Pierre, ...

O papel da insolacao na "desacoplagem" entre as precipitacoes da Amazonia oriental e dos Andes centrais, entre 12.400 e 8.800 anos BP cal. (1996)

Martin, Louis, Absy, M.L., Flexor, J.M., Ledru, Marie-Pierre, Mourguiart, Philippe, Salgado-Labouriau, M.L., ...

Perturbaciones del régimen de las lluvias y condiciones de tipo El Niño en América del sur tropical desde hace 7000 años (1995)

Martin, Louis, Bertaux, Jacques, Ledru, Marie-Pierre, Mourguiart, Philippe, Sifeddine, Abdelfettah, Soubiès, François, ...

PERTURBATIONS DU RÉGIME DES PLUIES ET CONDITIONS DE TYPE EL NIÑO EN AMÉRIQUE DU SUD TROPICALE DEPUIS 7 000 ANS. Des enregistrements sédimentaires provenant de trois régions d’Amérique du Sud,...

Feux, climats et végétations au Brésil central durant l'holocène : les données d'un profil de sol à charbons de bois (Salitre, Minas Gerais) (1994)

Vernet, J.L., Wengler, L., Solari, M.E., Ceccantini, G., Fournier, Marc, Ledru, Marie-Pierre, ...

La découverte d'une séquence holocène de charbons de bois dans un latosol bordant une dépression marécageuse au Brésil central permet de définir une période majeure de feux de forêts à...

Geochemical markers of palaeo-environments : relations between climatic changes, vegetation and geochemistry of lake sediments, Southern Brazil (1993)

Sondag, Francis, Soubiès, François, Ledru, Marie-Pierre, Delaune, Mireille

Tropical forest changes during the late quaternary in African and South American lowlands (1993)

Servant, Michel, Maley, Jean, Turcq, Bruno, Absy, M.L., Brenac, Patrice, Fournier, Marc, ...

Late quaternary environmental and climatic changes in Central Brazil (1993)

Ledru, Marie-Pierre

The evolution of the continental and coastal environments during the last climatic cycle in Brazil (120 KY. B.P. to present) (1993)

Suguio, K., Absy, M.L., Flexor, J.M., Ledru, Marie-Pierre, Martin, Louis, Sifeddine, Abdelfettah, ...

Modifications de la végétation du Brésil Central entre la dernière époque glaciaire et l'interglaciaire actuel (1992)

Ledru, Marie-Pierre

Neoformaçao de fosfato de titanio em sedimentos da "lagoa campestre" de Salitre, Minas Gerais (1991)

Soubiès, François, Sondag, François, Delaune, Mireille, Ledru, Marie-Pierre, Martin, Louis, Suguio, K., ...

Perturbaciones del régimen de las lluvias y condiciones de tipo El Niño en América del sur tropical desde hace 7000 años (1972)

Martin, Louis, Bertaux, Jacques, Ledru, Marie-Pierre, Mourguiart, Philippe, Sifeddine, Abdelfettah, Soubiès, François, ...

Algunos registros sedimentarios provenientes de tres regiones de América del Sur, geográfica y climáticamente diferentes, permitieron reconstruir la evolución del régimen, de las lluvias durante...