Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Gaston Achoundong"'
Autor:
Jérémy Migliore, Anne-Marie Lézine, Michel Veuille, Gaston Achoundong, Barthélémy Tchiengué, Arthur F. Boom, Franck K. Monthe, Gaël U. D. Bouka, Stephen F. Omondi, Lawrence Wagura, Francisco Maiato P. Gonçalves, Tariq Stévart, João N. M. Farminhão, Olivier J. Hardy
Publikováno v:
Forests, Vol 13, Iss 2, p 208 (2022)
Background and objectives—Podocarpus latifolius (synonym of P. milanjianus) is a key tree representative of Afromontane forests where it is highly threatened by climate and land-use changes. While large populations occur in East Africa, only a few
Externí odkaz:
https://doaj.org/article/a9d9bf7fbaf0477e85291705b61c0e99
Autor:
Gilbert Todou, Laure Benoit, Gaston Achoundong, Amougou Akoa, Geo Coppens d’Eeckenbrugge, Hélène I. Joly, Emilie Roux, Jean-Michel Onana
Publikováno v:
Journal of Agriculture and Environment for International Development, Vol 107, Iss 2, Pp 163-177 (2013)
In order to contribute to the management of plant genetic resources in tropical Africa, a study of the genetic diversity of Dacryodes buettneri, a forest species exploited in Central Africa as timber, was carried out in Gabon. The nuclear DNA extract
Externí odkaz:
https://doaj.org/article/bbf76975fc92482c823703e343637bea
Autor:
Silvere Ngouela, Guy Feuya, Jean C. Tchouankeu, Gaston Achoundong, Raymond B.T. Zambou, Etienne Tsamo, Joseph D. Connolly
Publikováno v:
Bulletin of the Chemical Society of Ethiopia, Vol 18, Iss 2, Pp 221-224 (2004)
A new lignan, meiocarpin, and the known compounds, sitosterol and polycarpol, have been isolated from the stem bark of Meiocarpidium lepidotum, Annonaceae. The structure of the new compound was elucidated on the basis of its spectroscopic data.
Externí odkaz:
https://doaj.org/article/737594c860354f60b40d81b2fbe2db37
Publikováno v:
Quaternary International
Quaternary International, Elsevier, 2020, ⟨10.1016/j.quaint.2020.12.014⟩
Quaternary International, 2020, ⟨10.1016/j.quaint.2020.12.014⟩
Quaternary International, Elsevier, 2020, ⟨10.1016/j.quaint.2020.12.014⟩
Quaternary International, 2020, ⟨10.1016/j.quaint.2020.12.014⟩
Pollen-based vegetation, biodiversity, and biome reconstructions over the last 15,500 years from sediment core data at Mbi Crater in the Cameroon highlands (6.089273° N, 10.348549° E; 2015 m above sea level) are used to discuss the behavior of the
Autor:
Gaston Achoundong, Martin Cheek
Publikováno v:
Kew Bulletin. 78:83-93
SummaryTwo tree species are described as new to science: Rinorea spongiocarpa Achound. sp. nov. (placed in Rinorea [unranked] Brachypetalae) and R. dimakoensis Achound. sp. nov. (placed in Rinorea [unranked] Ilicifolieae). Both species occur in Camer
Autor:
Anne-Marie Lézine, Esther Githumbi, Laurent Marquer, Shinya Sugita, Florence Mazier, Christelle Hély, Furong Li, Marie-José Gaillard, Gaston Achoundong, Judicael Lebamba
Publikováno v:
Quaternary Vegetation Dynamics – The African Pollen Database ISBN: 9781003162766
Quaternary vegetation dynamics, the African pollen database
Jurge Runge, William D. Gosling, Anne-Marie Lézine, Louis Scott. Quaternary vegetation dynamics, the African pollen database, CRC Press; CRC Press, pp.183-206, 2021, ⟨10.1201/9781003162766-12⟩
Jurge Runge, William D. Gosling, Anne-Marie Lézine, Louis Scott. Quaternary vegetation dynamics, the African pollen database, 1, CRC Press; CRC Press, pp.183-206, 2021, ⟨10.1201/9781003162766-12⟩
Quaternary vegetation dynamics, the African pollen database
Jurge Runge, William D. Gosling, Anne-Marie Lézine, Louis Scott. Quaternary vegetation dynamics, the African pollen database, CRC Press; CRC Press, pp.183-206, 2021, ⟨10.1201/9781003162766-12⟩
Jurge Runge, William D. Gosling, Anne-Marie Lézine, Louis Scott. Quaternary vegetation dynamics, the African pollen database, 1, CRC Press; CRC Press, pp.183-206, 2021, ⟨10.1201/9781003162766-12⟩
International audience; Quantitative pollen-based reconstruction of Holocene plant abundance has not been attempted in the tropics so far. Tropical vegetation is characterized by a large number of entomophilous species and pollen-vegetation modelling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b6e1e5eec32990c889750f9fe8ef29
https://doi.org/10.1201/9781003162766-12
https://doi.org/10.1201/9781003162766-12
Autor:
Muriel Batut, Naubron Jean Valère, Georges Massiot, Christophe Long, Gaston Achoundong, Bruno David, Isabelle Pouny, Yannick Aussagues, Catherine Lavaud
Publikováno v:
Journal of Natural Products
Journal of Natural Products, American Chemical Society, 2021, 84 (4), pp.1198-1202. ⟨10.1021/acs.jnatprod.0c01261⟩
Journal of Natural Products, American Chemical Society, 2021, 84 (4), pp.1198-1202. ⟨10.1021/acs.jnatprod.0c01261⟩
Five new quinolizidine alkaloids were isolated from the leaves of Cylicomorpha solmstii (Urb.) Urb. (Caricaceae) and named cylicomorphins A-E (1-5). They all are ester derivatives of the same basic quinolizidine skeleton bearing hydroxy, methyl, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca589ba3931dff43cdbb341f0531fd94
https://hal.archives-ouvertes.fr/hal-03359925
https://hal.archives-ouvertes.fr/hal-03359925
Autor:
Isabelle, Pouny, Christophe, Long, Muriel, Batut, Yannick, Aussagues, Naubron, Jean Valère, Gaston, Achoundong, Bruno, David, Catherine, Lavaud, Georges, Massiot
Publikováno v:
Journal of natural products. 84(4)
Five new quinolizidine alkaloids were isolated from the leaves of
Autor:
Thierry Desjardins, Anne-Marie Lézine, Fethiye Cetin, Gaston Achoundong, Jean-Pierre Nguetnkam, Bruno Turcq, Magloire Mandeng-Yogo
Publikováno v:
The Holocene
The Holocene, London: Sage, 2020, 30 (10), pp.1391-1399. ⟨10.1177/0959683620932963⟩
The Holocene, 2020, 30 (10), pp.1391-1399. ⟨10.1177/0959683620932963⟩
The Holocene, London: Sage, 2020, 30 (10), pp.1391-1399. ⟨10.1177/0959683620932963⟩
The Holocene, 2020, 30 (10), pp.1391-1399. ⟨10.1177/0959683620932963⟩
The end of the Holocene Humid Period was characterized by the massive collapse of forest ecosystems in central Africa. Was this large-scale environmental crisis dated between 3300 and 2500 years BP at the origin of the present-day wooded-grassland/fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f94ea02dddaaed4aae0b733fc12ba562
https://hal.archives-ouvertes.fr/hal-02913873
https://hal.archives-ouvertes.fr/hal-02913873
Autor:
Judicael Lebamba, Marie-José Gaillard, Christelle Hély, Laurent Marquer, Florence Mazier, Esther Githumbi, Shinya Sugita, Anne-Marie Lézine, Gaston Achoundong
Currently interaction between climate and land-cover change in the past across the globe, and whether drivers are anthropogenic or natural are among the biggest debates. The impacts of climate and land-cover change are having significant consequences
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90d1c6460b2c4798a31cf1633d888264
https://doi.org/10.5194/egusphere-egu2020-9054
https://doi.org/10.5194/egusphere-egu2020-9054