Contents
Academic literature on the topic 'Environnement – Gabon'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Environnement – Gabon.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Environnement – Gabon"
Meunier, Quentin, Sylvie Boldrini, Carl Moumbogou, Amélie Morin, Sostène Ibinga, and Cédric Vermeulen. "Place de l'agriculture itinérante familiale dans la foresterie communautaire au Gabon." BOIS & FORETS DES TROPIQUES 319, no. 319 (January 1, 2014): 65. http://dx.doi.org/10.19182/bft2014.319.a20553.
Full textCarrière, Stéphanie M., Catherine Sabinot, and Hélène Pagezy. "Children’s ecological knowledge: drawings as a tool for ethnoecologists (Gabon, Madagascar)." N° 7 (2017) / Issue 7 (2017), January 1, 2017. http://dx.doi.org/10.25518/2034-8517.2777.
Full textBourel, Etienne. "Forêt." Anthropen, 2016. http://dx.doi.org/10.17184/eac.anthropen.012.
Full textGuedj, Pauline. "Afrocentrisme." Anthropen, 2017. http://dx.doi.org/10.17184/eac.anthropen.046.
Full textDissertations / Theses on the topic "Environnement – Gabon"
Nziengui, Marcellin. "Apports des technologies d'observation de la terre pour la production de l'information environnementale en Afrique centrale : l'exemple du Gabon : application à la composante forestière." Marne-la-Vallée, 2005. http://www.theses.fr/2005MARN0251.
Full textNdoulou, Loubamono Evelyne Solange. "Risques naturels d'inondation et problèmes d'environnement au Gabon." Paris 1, 2000. http://www.theses.fr/2000PA010507.
Full textBakita, Marina Michelle. "Les liens entre les valeurs et les comportements éthiques : le cas du Gabon." Paris 10, 2012. http://www.theses.fr/2012PA100168.
Full textOur research is entitled “Bonds between values and ethic behaviours: Gabon case” and thinks about our values system and our ethics behaviours. Values are defined as moral principles wich seem to drive human action, they answer to a “kind of individual belief based on role models of behaviour and on ideal ends. They finally have an influence on human, it means they drive his life and choices”(Wach & Hammer, 2003) so his projects. This research aims to expect bonds between values and two ethic behaviours (environmental behaviour and organizational citizenship behaviour) established by Gabonese employees of private and public sectors. It consists in compare this two ethic behaviours, if this comparison has sense, with those obtained in a French population in order to discuss bonds they have with values. Results obtained are rich and modify our hypothesis. About values, Gabonese refer to both collectivist and individualist values, but inter-individualist differences are important, then confirming that culture isn’t enough to understand values. They feel affected by environmental problems, in particular urban pollution and deforestation. But, if Gabonese are globally ready to adopt environmental behaviour (behaviour of waste management, autos care and quarter care), inter-individual differences are again significant. Those environmental behaviours are in relation with the second type of ethic behaviour we studied, namely organizational citizenship behaviour (for example food wastes management behaviour and altruism behaviour, management of quarter cleanliness and “workmanship behaviour’’, it supposes that an ethic behaviour depends on the place where it’s produced (in or out of the organisation)
Tchoba, Charles. "Culture, développement durable et démocratie participative : l'exemple des ONG environnementales gabonaises." Pau, 2005. http://www.theses.fr/2005PAUU1005.
Full textAt present, the sustainable development is one of the topics that worry more the nongovernmental organizations (NGO's) on the international scene. How could NGO's constitute a strong vector of popular mobilization and promotion of the sustainable development through the projects that they implement ? Which are the links between sustainable development, culture and participative democracy ? The objective of this thesis is to wonder about the role of culture in sustainable development and participative democracy, related to the environmental protection. After a development on the concept of culture, the thesis shows that the little of interest granted to this concept constitutes an important lack in the approach of sustainable development and participation. Indeed, the culture is mediating the relations that the subject maintains with its environment. Such a lack explains the difficulties encountered by the actors who work in favour of the sustainable development and the conservation of biodiversity. It is what we show in the precise field of the forest starting from an empirical case : the Gabonese environmental NGO's. Ultimately, this thesis suggests not ignoring the topic competence, i. E. The capacity of subject to know how to function in space. Within the framework of sustainable forest management, it thus appears necessary to develop the aforementioned competence in thought and action, by holding account of the various representations of nature as well as deep aspirations of the topic actors
Dubois, Manon. "Environnement de dépôt et processus de formation des carbonates de manganèse dans les black shales paléoprotérozoiques du Bassin de Franceville (2.1 Ga ; Gabon)." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT082.
Full textThe Franceville Basin (2.1 Ga) in southeastern Gabon, hosts a black shale series well preserved (FB Formation) which represents an exceptional example of unmetamorphised Paleoproterozoic sediment strata. This basin includes the protore of one of the largest Mn-oxide laterite ore worldwide, mined by Eramet-Comilog. The aim of this this work is to determine formation conditions of this protore and to characterize the global sedimentary evolution of the FB Formation which include the protore. This 75 m thick protore is constituted of Mn carbonate-rich black shales which represent a potential ore deposit for the future. It was drilled, on the Bangombé plateau, during a recent campaign of 24 boreholes with an average depth of 125 m.Through multidisciplinary study on these cores and key outcrops of the basin, this work focuses on : i) the depositional environment of the Mn-protore and FB Formation ; ii) the processes of formation of the Mn-carbonates at 2.1 Ga and iii) the architecture and distribution of Mn-rich levels of the protore on the Bangombé Plateau.A detailed sedimentological and petrological study allowed us to redefine the division of the FB into nine units, named U1 to U9 from the base to the top. These units show a fine upward cycle up to U5 and a reverse coarse loop until U9. This division leads to a new interpretation to propose an evolution from a shoreface depositional environment controlled by deltaic currents (U1) to an offshore depositional environment with anoxic conditions (U2). In this basin, a system of submarine fan is developed, feeding a network of sand injections (injectites) covering the Bangombé plateau (70 km²) and with a thickness of 150 m affecting U4 to U7, including the Mn-protore. The protore depositional environment formed below the wave base limit (U4, U5 and U6) in a starved basin, controlled by biochemical sedimentation allowed the formation of Mn-carbonates. The end of starved basin, would allow the re-opening of the detrital input into the offshore basin (U7). This basin is then filled by storm bar deposits intersected by deltaic sub-aquatic channels (U8). The U9 unit corresponds to a quiet lagoon environment, allowing the multicellular organism development for the first time on the planet.A geochemical study allowed the characterization of the depositional environment of Mn-carbonates as an anoxic to sub-oxic and alkaline environment. For the first time, we showed that the manganese carbonates, present as bacteriomorph forms, are precipitated from the seawater by the mediated photosynthetic cyanobacterial activity, which allows CO2 / HCO3 depression of the environment and a local increase of pH. The cyanobacterial activity is controlled by the absence of bottom currents, which increase the detrital input. This would stop the activity of the cyanobacteria and thus would lead to the decrease of the Mn-concentration along the protore.Finally, well-log and a sequential correlation analyses allowed us to detail spatial and timing repartition of FB Formation deposit, controlled by a tectono-sedimentary model. We propose two- tectono-sedimentary phases. A first syn-tectonic phase (U1 to U3) controls the depocentres and sedimentation gaps. Turbidite coarse deposits are located in the most subsident part, clay deposits rather on the slope and carbonates on shoals. A second post-tectonic phase (U4 to U7) allows isopach deposits. The Mn-protore formed during the post-tectonic phase. However, it shows a variable thickness due to subsidence to the north of the Bangombé plateau. So, on the Bangombé plateau, Mn-contents increase towards the south, whereas the protore thickness increases towards the NNE. Moreover sand injectites decrease Mn-content in the eastern part of the Bangombé plateau and impact on the economic evaluation of the Mn-carbonates. Currently, the protore is structured by post-sedimentary faults, which lead to a non-continuity of the high Mn levels on the Bangombé plateau
Djembi-Koumba, Siméon. "Gestion de l'environnement, des risques et problèmes d'aménagement urbains de Port-Gentil au Gabon." Bordeaux 3, 2009. http://www.theses.fr/2008BOR30097.
Full textPort Gentil is an industrial and harbour town relatively young. After having been the principal way of penetration of the interior of the country during the fifteenth century, Mandji remained a long time the stronghold of wood before becoming the economic capital of Gabon thanks to and especially oil which covers more 70% of the receipt of Gabon. This industrialization involved flows of populations to meet the industrial requirements in labour. Thus, Port-Gentil ast since the years 1950, the second most populated city country, in spire of the natural conditions unfavorable to the installation of the men. The city thus developed of its site initial towards the marshy west and whose altitude of the grounds is very in lower part of the sea level. Blow, the populations are victims of the floods. In addition, the installation of industries along bay of the Cape-Lopez and especially the infrastructures oil (pipelines and gas pipelines) became spaces at the risks. Because, the current urban development largely crossed these limits. Beyond the fact that Port-Gentil always does not receive on behalf of the State the rebate which it deserves, the city is today confronted with the problems of floods, anarchistic urbanization, an insufficiency maintenance of the network cleansing, of pollution industrial, and especially of a coastal erosion. All these risks are responsible for morphodynamic urban, harm pubic health and obstruct extension continues urban fabric. The stablishment of the men and the management of environment of Port-Gentil thus imply the control of these instabilities. That implies an application of the plan; installation and cleansing, the protection of the emissary of urban drainage and, the rigorous management of waste
Guiyeligou, Grace Daniella. "Étude paléo-environnementale des dépôts manganésifère paléoprotérozoique (2.1 Ga-GABON)." Thesis, Poitiers, 2019. http://www.theses.fr/2019POIT2321.
Full textPaleoproterozoic is a crucial period in the history of the Earth. One of the major events recorded at that time was the Great Oxidation Event (GOE) from 2.45 to 2.32 Ga. This event will lead to global changes on a global scale. It will impact the physico-chemical conditions by promoting oxidative alteration of the continents. The latter is at the origin of the progressive explosion of photosynthetic cyanobacteria responsible for a significant oxidation of the environment. A complex and organized multicellular life developed as a result of this event. The Paleoproterozoic basin (2.1 to 2.0 Ga) of Franceville, located in southeastern Gabon, shows sedimentary deposits in a very good state of conservation and constitutes an exceptional archive to trace the deposition processes of this period. The francevillian sedimentary series is composed of four lithostratigraphic formations from FA to FD. Manganese accumulations are specifically visible in the plateau areas where the largest reserves are located in the Bangombé and Okouma plateaus. This work pays particular attention to the FB formation and more particularly the FB1b and FB1c subunits located on the Okouma site where iron, phosphorus and manganese deposits are found. A multidisciplinary and multi-scale study was carried out on seven Okouma holes, provided by the mining company Eramet-Comilog. The sedimentological study of the various samples made it possible to divide the holes into three units: 1- lower, consisting of detrital facies and in particular banded heterolithics (FB1b), 2- a so-called transition unit that marks the passage of the FB1b to FB1c formations with carbonate facies rich in pyrite called in this work black shales pyriteux and iron carbonates and 3- a higher unit represented by manganiferous shale blacks or is interposed by fine medium sandstones. These facies testify to the establishment of a marine environment from a phase of transgression that began at the FA-FB transition. Petrographic and mineralogical analyses have revealed clay minerals composed of illite, chlorite and interlayered illite/smectite. The illitization reaction is almost complete (90% illite) as shown by the ordered interlayered (R3). Geochemical analyses show that the FB1b formation is dominated by detrital materials while those of the formation above FB1c are dominated by chemical processes. Similarly, most redox sensitive elements (Mn, Zn, Ni, Co, Co, Mo, Cd and Cu) show a redox change from an oxic environment (FB1b) to anoxic (FB1c)
Tsiba, Jean-Kevin Aimé. "L'exploitation minière dans la région du Haut-Ogooué (Gabon) : contribution à l'étude des impacts environnementaux." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0361.
Full textThis dissertation is about the consequences of manganese and uranium mining on the environment in Gabon, especially in the Haut-Ogooué province. The extraction of manganese in Moanda, conducted by the Comilog company (a subsidiary of the French ERAMET), has both radically altered the landscape and caused chemical pollution in the local ecosystems. The extraction of uranium, formerly conducted by Comuf (a subsidiary of Areva, then known as COGEMA) has caused severe environmental damage, both in terms of abnormally high radioactivity and landscape alteration. In both cases, the confrontation of nature and society has seen an ever increasingly rapid transformation of nature due to the growth of human activity. Such manmade hazards have potentially fatal consequences. The environmental crisis created by the two mining projects has caused anger in the local population and the civil society at large, with people blaming the government and the companies concerned for not handling the hazards in the area responsibly enough or soon enough. This dissertation suggests several avenues to improve the local quality of life in Moanda (manganese mining) and Mounana (uranium mining) in the perspective of sustainable development. Those suggestions include the creation of public structures such as the “mine police” and of analysis laboratories in charge of environmental data
Bignoumba, Backouyanga Diane Marina. "Les enjeux de la gestion du risque environnemental dans la zone de N'Toum au Gabon : cas de l'entreprise CIMGABON." Phd thesis, Université du Littoral Côte d'Opale, 2013. http://tel.archives-ouvertes.fr/tel-01020557.
Full textOtt, Cécile Chantal. "Exploitation forestière et droits des populations locales et autochtones en Afrique centrale (Cameroun, Congo, Congo RDC et Gabon)." Thesis, Lyon 3, 2011. http://www.theses.fr/2011LYO30047.
Full textThe forests of Cameroon, Congo, CongoRCD and Gabon are full of enormous resources. Several possibilities are available to these countries by the richness and diversity of fauna, flora, exploitation of resources underground resources, wood and non wood forest products. Logging of these resources could be an effective means of improving the living conditions of local and indigenous people who depend on these forests. However, despite the legal, political and economic setup by different governments, people's participation in forest management is very relative. The promotion and protection of their social and economic rights also remain problematic