Manioc : Portail | resultats 41 - 60 pour la recherche: Imperi al College London

Les chasseurs de têtes de l'Amazone : sept ans d'aventures et d'explorations dans les forêts vierges de l'Amérique équatoriale : avec vingt et une photographies hors texte et une carte
Auteur(s) : Up de Graff, Fritz W. (1873-1927)
Auteurs secondaires : Belperron, Pierre (1893-1949)
Année de publication :

| Plus

The West Indies in 1837; being the journal of a visit to Antigua, Montserrat, Dominica, St. Lucia, Barbados, and Jamaïca : undertaken for the purpose of ascertaining the actual condition of the negro population of those islands
Auteur(s) : Sturge, Joseph (1793-1859) Harvey, Thomas (1812-1884)
Année de publication :

| Plus

Mémoire historique et politique sur la Louisiane,... accompagné d'un Précis de la vie de ce ministre, et suivi d'autres mémoires sur l'Indostan, Saint-Domingue, la Corse et la Guyane. Orné du portrait de M. de Vergennes
Auteur(s) : Vergennes, Charles Gravier (1717-1787 ; comte de)
Année de publication :

| Plus

Eléments de bibliographie générale méthodique & historique de la Martinique (Antilles francaises)
Auteur(s) : Gazin Gossel, Jacques
Année de publication :

| Plus

The English in the West Indies or the bow of Ulysses
Auteur(s) : Froude, James Anthony (1818-1894) Pearson, G.
Année de publication :

| Plus

Hayti or the black republic
Auteur(s) : Saint-John, Spenser Buckingham (1825-1910 ; Sir)
Année de publication :

| Plus

Santo Domingo : past and present with a glance at Hayti
Auteur(s) : Hazard, Samuel (1834-1876)
Année de publication :

| Plus

Voyage pittoresque dans les deux Amériques : résumé général de tous les voyages
Auteur(s) : Orbigny, Alcide d' (1802-1857)
Auteurs secondaires : Sainson
Année de publication :

| Plus

Using functional traits and phylogenetic trees to examine the assembly of tropical tree communities
Auteur(s) : Baraloto, Christopher Hardy, Olivier J. Paine, C. E. Timothy Dexter, Kyle G. Cruaud, Corinne Dunning, Luke T. Gonzalez, Mailyn-Adriana Molino, Jean-Francois
Auteurs secondaires : Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS) Fac Sci ; Université Libre de Bruxelles [Bruxelles] (ULB) Inst Evolutionary Biol & Environm Studies ; Université de Zürich CNRS, UMR 5174, Lab Evolut & Diversite Biol ; Université Paul Sabatier - Toulouse 3 (UPS) Inst Genom ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Ascot SL5 7PY ; Imperial College London Auckland Mail Ctr ; Landcare Research Dept Ciencias Biol ; Universidad de Los Andes

Éditeur(s) : HAL CCSD Wiley
Résumé : 1. Niche theory proposes that species differences underlie both coexistence within communities and the differentiation in species composition among communities via limiting similarity and environmental filtering. However, it has been difficult to extend niche theory to species-rich communities because of the empirical challenge of quantifying niches for many species. This has motivated the development of functional and phylogeny-based approaches in community ecology, which represent two different means of approximating niche attributes. 2. Here, we assess the utility of plant functional traits and phylogenetic relationships in predicting community assembly processes using the largest trait and phylogenetic data base to date for any set of species-rich communities. 3. We measured 17 functional traits for all 4672 individuals of 668 tree species co-occurring in nine tropical rain forest plots in French Guiana. Trait variation was summarized into two ordination axes that reflect species niche overlap. 4. We also generated a dated molecular phylogenetic tree based on DNA sequencing of two plastid loci (rbcL and matK) comprising 97% of the individuals and 91% of the species in the plots. 5. We found that, on average, co-occurring species had greater functional and, to a lesser extent, phylogenetic similarity than expected by chance. 6. We also found that functional traits and their ordination loadings showed significant, albeit weak, phylogenetic signal, suggesting that phylogenetic distance provides pertinent information on niche overlap in tropical tree communities. 7. Synthesis. We provide the most comprehensive examination to date of the relative importance of environmental filtering and limiting similarity in structuring tropical tree communities. Our results confirm that environmental filtering is the overriding influence on community assembly in these species-rich systems.
ISSN: 0141-6707

hal-01032423
https://hal.archives-ouvertes.fr/hal-01032423
DOI : 10.1111/j.1365-2745.2012.01966.x

| Plus

The sugar cane: a poem in four books with notes
Auteur(s) : Grainger, James (1721-1766)
Année de publication :

| Plus

Personal narrative of travels to the equinoctial regions of America, during the years 1799-1804 / by Alexander von Humboldt and Aimé Bonpland ; translated from the French of Alexander von Humboldt and edited by Thomasina Ross. Volume 2
Auteur(s) : Bonpland, Aimé (1773-1858) Humboldt, Alexander von (1769-1859)
Année de publication :

| Plus

Use of Plasmodium falciparum culture-adapted field isolates for in vitro exflagellation-blocking assay.
Auteur(s) : Leba, Louis-Jérôme Musset, Lise Pelleau, Stéphane Estevez, Yannick Birer, Caroline Briolant, Sébastien Witkowski, Benoit Ménard, Didier
Auteurs secondaires : Laboratoire de Parasitologie ; Institut Pasteur de la Guyane - Réseau International de Instituts Pasteur Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Université de Guyane (UG) - Centre National de la Recherche Scientifique (CNRS) Direction Interarmées du Service de Santé en Guyane ; Direction Interarmées du Service de Santé en Guyane Institut de Recherche Biomédicale des Armées (IRBA) ; Service de Santé des Armées Institut Pasteur du Cambodge ; Institut Pasteur du Cambodge - Réseau International des Instituts Pasteur (RIIP) Department of Life Sciences ; Imperial College London This work was supported by a European commission REGPOT-CT-2011-285837-STRonGer Grant within the FP7, by an Institut Pasteur ACIP (A10-2013) Grant and by Investissement d’Avenir Grant of the ANR (CEBA: ANR-10-LABX-25-01). ANR-10- LABX-25-01, CEBA, Labex CEBA ANR-10- LABX-25-01

Éditeur(s) : HAL CCSD BioMed Central
Résumé : International audience
A major requirement for malaria elimination is the development of transmission-blocking interventions. In vitro transmission-blocking bioassays currently mostly rely on the use of very few Plasmodium falciparum reference laboratory strains isolated decades ago. To fill a piece of the gap between laboratory experimental models and natural systems, the purpose of this work was to determine if culture-adapted field isolates of P. falciparum are suitable for in vitro transmission-blocking bioassays targeting functional maturity of male gametocytes: exflagellation. Plasmodium falciparum isolates were adapted to in vitro culture before being used for in vitro gametocyte production. Maturation was assessed by microscopic observation of gametocyte morphology over time of culture and the functional viability of male gametocytes was assessed by microscopic counting of exflagellating gametocytes. Suitability for in vitro exflagellation-blocking bioassays was determined using dihydroartemisinin and methylene blue. In vitro gametocyte production was achieved using two isolates from French Guiana and two isolates from Cambodia. Functional maturity of male gametocytes was assessed by exflagellation observations and all four isolates could be used in exflagellation-blocking bioassays with adequate response to methylene blue and dihydroartemisinin. This work shows that in vitro culture-adapted P. falciparum field isolates of different genetic background, from South America and Southeast Asia, can successfully be used for bioassays targeting the male gametocyte to gamete transition, exflagellation.
ISSN: 1475-2875

Droits : http://creativecommons.org/licenses/by/
pasteur-01182753
https://hal-pasteur.archives-ouvertes.fr/pasteur-01182753
https://hal-pasteur.archives-ouvertes.fr/pasteur-01182753/document
https://hal-pasteur.archives-ouvertes.fr/pasteur-01182753/file/LeBas%20et%202015%20version%20publie%20%281%29.pdf
DOI : 10.1186/s12936-015-0752-x

| Plus

England and the French Revolution 1789-1797
Auteur(s) : Laprade, William Thomas
Année de publication :

| Plus

Flora brasiliensis : enumeratio plantarum in Brasilia hactenus detectarum quas suis aliorumque botanicorum studiis descriptas et methodo naturali digestas partim icone illustratas. Volumen I, Pars I
Auteur(s) : Martius, Carl Friedrich Philipp von (1794-1868) Urban, Ignaz (1848-1931)
Auteurs secondaires : Eichler, August Wilhelm (1837-1887)
Année de publication :

| Plus

Montesquieu et l'esclavage : étude sur les origines de l'opinion antiesclavagiste en France au XVIIIe siècle
Auteur(s) : Jameson, Russell Parsons (1878-1954)
Année de publication :

| Plus

The Life and voyages of Christopher Colombus ; together with the voyages of his companions (vol. 3)
Auteur(s) : Irving, Washington (1783-1859)
Année de publication :

| Plus

The buccaneers and marooners of America : being an account of the famous adventures and daring deeds of certain notorious freebooters of the Spanish main
Auteur(s) : Exquemelin, Alexandre-Olivier (1646-1717)
Auteurs secondaires : Pyle, Howard (1853-1911) Johnson, Charles (16..-17.. ; capitaine)
Année de publication :

| Plus

Raleigh's discovery of Guiana
Auteur(s) : Raleigh, Walter (1554?-1618)
Année de publication :

| Plus

The civil and natural History of Jamaica. In three parts. Containing, I. An accurate description of that island, its situation and soil ; with a brief account of its former and present State, Government, Revenues, Produce, and Trade. II. A history of the natural productions, including the various sorts of native fossils ; perfect and impercfect begetables ; quadrupedes, birds, fishes, reptiles and insects ; with their properties and uses in mechanics, diet, and physic. III. An account of the nature of climates in general, and their different effects upon the human body ; with a detail of the diseases arising from this source, particularly within the Tropics. In three dissertations. The whole illustrated with fifty copper-plates : in which the most curious productions are represented of the natural size, and delineated immediately from the objects
Auteur(s) : Browne, Patrick (1720-1790)
Année de publication :

| Plus

Bulletin de la Société de Géographie
Auteur(s) : Bourdon, G. Kertanguy Cortambert, Eugène (1805-1881) Lefebvre-Duruflé Grad, Charles (1842-1890) Durand, César Pierre (1804-188.?) Lejean, Guillaume Marie (1824-1871) Bendetti
Auteurs secondaires : Hayes, Isaac Israel (1832-1881) Schweinfurth, Georg August (1836-1925) Baker, Samuel White (1821-1893) Belloc Foucou, Félix Rohlfs, Gerhard (1831-1896) Fleuriot de Langle, Alphonse Jean René (1809-1881) Chasseloup-Laubat, Prosper de (1805-1873)
Année de publication :

| Plus