Nickel silicate laterite deposits developed on ultra-mafic rocks are similar in many general respects but they vary considerably in detail. The mineralogy of these surficial deposits is very complex and difficult to determine because of the fine grained nature and solid solution characteristics of the hydrous secondary minerals and because many of the phases are actually mineraloids that are poorly ordered or amorphous. To try some new approaches toward clarification of these phases, 24 samples from New Caledonia and Puerto Rico ranging from the ophiolite-ultramafic olivine-pyroxene-chromite-serpentine substrate rocks upward through intermediate phases of weathering to the final oxide -hydroxide iron cap phase were analyzed with the infrared spectrophotometer (IR -10) and with the automated X –ray diffractometer. Four limonite samples were also mineralogically analyzed. Goethite, secondary quartz, cryptomelane, hematite, chromite, talc, thuringite, and garnierite have been identified in various samples as weathering profile products.

Le sanctuaire Agoa est une aire marine protégée dans la zone économique exclusive (ZEE) des Antilles françaises qui fut créée en 2010 pour la conservation des mammifères marins et de leurs habitats. Il est connu que le rorqual à bosse fréquente les eaux des Antilles de décembre à mai pour la reproduction et la mise bas. Par contre, peu d’information existe sur l’abondance, le comportement, la distribution et les pressions anthropiques sur cette espèce aux Antilles et encore moins dans le sanctuaire. Cette maîtrise s’intéresse principalement à connaître cette espèce dans un secteur précis de cette aire marine et les liens qu’elle entretient avec certains utilisateurs humains de son habitat. Le tout vise à informer les intervenants en place, autant institutionnels qu’utilisateurs, vers une mise en place de mesures de conservation adaptées. Un suivi terrestre hivernal de plus de 300 heures, en 2012 et 2013, a permis de déterminer l’utilisation de l’habitat et les pressions anthropiques sur une population de rorquals à bosse fréquentant le sud de la péninsule de la Pointe-des-Châteaux en Guadeloupe. Il s’agit du premier suivi terrestre de cette espèce aux Antilles françaises et un des premiers dans l'arc caribéen. La zone d’étude couvre environ 264 km2 et serait une des zones les plus fréquentées de l’archipel guadeloupéen par l’espèce. À l’aide d’un théodolite, la trajectoire de 107 groupes différents (137,8 heures, 699 remontées) a été décrite. Les résultats montrent que la zone d’étude est principalement fréquentée en mars et avril, avec une abondance maximale au début du mois d’avril. La forte présence de baleineaux, particulièrement au mois de mars, pousse à croire que cette zone est utilisée comme pouponnière. Le comportement n’est pas aléatoire dans la zone d’étude et les trajectoires convergent vers certaines zones ayant possiblement un lien avec la bathymétrie. De plus, la zone marine à proximité de la Pointe-des-Châteaux pourrait potentiellement être un lieu de convergence des groupes. Ceux-ci se déplacent à vitesse réduite en direction ENE en général, à l’exception des femelles accompagnées de baleineaux qui prennent une orientation tout autre, c’est-à-dire vers le ONO, et ce à plus grande vitesse. Bien que la pression d’observation soit considérée comme modérée, une forte proportion des remontées se trouve dans les corridors de navigation présents dans la zone d’étude. De plus, le corridor de navigation des navettes entre Saint-François et La Désirade comporte le plus grand risque relatif de collision mortelle. Une réduction de vitesse des embarcations fréquentant le corridor des navettes diminuerait significativement le risque de collision mortelle. Ces pistes de réflexion mèneront sans doute à d’autres études plus poussées afin de continuer à en apprendre sur l’écologie de cette espèce fascinante. / The Agoa sanctuary, a marine protected area (MPO) covering the exclusive economic zone (EEZ) in the French Caribbean, was created in 2010 to protect marine mammals and their habitats. It is known that the Caribbean islands are used from December to May by humpback whales (Megaptera novaeangliae) as a reproductive area. However, sparse information exists on the abundance, the behaviour, the distribution and the anthropogenic pressures on this species in the Caribbean and even less in the sanctuary. This thesis focuses on increasing scientific knowledge about this species’ use of a part of the Agoa Sanctuary and their interactions with human users of the MPO. Such knowledge may inform stakeholders’ (institutional and individual) decision-making towards implementation of appropriate conservation measures. A land-based survey of more than 300 hours, in 2012 and 2013, was carried out to determine the habitat use of, and anthropogenic pressures on, a population of humpback whales frequenting the surrounding water of the Pointe-des-Châteaux peninsula in Guadeloupe. This is the first land-based survey of this species in the French West Indies and one of the first in the Caribbean. The study area of approximately 264 square kilometres is one of the most visited areas by this species in the Guadeloupe archipelago. Using a theodolite, 107 trajectories (i.e. groups of whales) were recorded, representing 137.8 hours and 699 surfacings. Results show that the abundance was higher in March and April with a peak in the first week of April. The high proportion of calves in this population, mainly in March, suggest that the study zone is a nursing area. Overall movement patterns are not random and may possibly be dictated by the bathymetry. Furthermore, trajectories seem to converge close to the Pointe-des-Châteaux. The average movement is slow and oriented in the same direction as the dominant current to the west of the Pointe-des-Châteaux (i.e. ENE), except for mother and calf groups that swim faster in the opposite direction (i.e. WNW). Even if the anthropogenic pressure may be consided as moderate, a high proportion of surfacing is located in some of the main maritime traffic corridors. In addition, the shuttle corridor between Saint-Francois and Désirade island has the greatest relative risk of fatal collision. A reduced speed for the shuttle corridor would lower significantly the collision risk. These findings may lead to more extensive studies to better understand the ecology of this fascinating species.

La transformation sociale des Antilles françaises qui se produit après la Seconde Guerre mondiale résulte d'un processus interactif historique. Celui-ci se produit entre 1946 et 1961 autour des nouvelles dynamiques de l'après-guerre. Il s'agit du statut départemental, de la décolonisation avec l'explosion des conflits sociaux, de la politique publique de "développement économique et social" avec la planification dans les départements d'outre-mer, et de l'accroissement démographique avec l'apparition d'une nouvelle génération "sociologique". C'est précisément cette interaction qui est à l'origine du nouveau type de société qui émerge aux Antilles à partir des années 1960 sans pour autant que leur structure sociale coloniale ne soit bouleversée. Cette construction qui prend le nom commun de "Départementalisation" est paradoxale car elle va générer des frustrations sociales "modernes", tout en maintenant des frustrations anciennes issues de la société de plantation. En induisant ainsi le passage d'un monde d'"habitation" à un monde de consommation, cette construction permet de comprendre un peu mieux, le maintien, au début du XXIe siècle, d'un malaise social latent dans ces départements en dépit d'une amélioration sensible et générale des conditions de vie. / The social change which takes place in the French West Indies after the Second World War ensues from a historical interactive process. It occurs between 1946 and 1961, within the frame of the new dynamic fostered in the aftermath of the war. Here we refer to he new political status of Department, the outbreak of social conflicts during the process of decolonization, the public policies and the planning of "the economic and social development" of the overseas departements. The dynamic also includes the population growth with the birth of a new generation from the sociological point of view. The aforementioned interaction instils the new type of society emerging in the French West Indies since the 1960's, without drastically changing their colonial social structure. This transformation named "Departmentalization" seems paradoxical because it will generate "modern" social frustrations, while maintaining existing frustrations that stemmed from the plantation society. this process led to the transition from a slave society to a consumer society. It allows us to understand the persistence of a latent social unrest in these departments, in spite of th overall significant improvement of the living conditions during the early twentieth century.

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Existing literature about women in positions of power and leadership is extensive and varied, including popular sectors such as finance, politics, and education. However, previous work has only focused on higher education and homogenized female leadership experience. One of the main issues in our knowledge of female leadership is the lack of diverse perspectives and experiences. This failure to recognize differences among women gives an inaccurate whole picture of how women lead within different contexts. Therefore, using the Ethics of Care as the guiding conceptual framework and social constructivism as its worldview, this narrative inquiry critically examined and concurrently discovered the lived experiences of four Trinidadian women of color who previously held a principal leadership position earlier in their lives. More specifically, the participants were retired primary and secondary school principals representing varying locations across the Caribbean island. Assuming the position of storyteller, participants narrated their approach to leading as storied descriptions of their lived experiences to the researcher. The findings of this study support existing literature on gender inequality female leaders often confront in their workplace and the emotional labor they engage in. The findings also indicated that participants tended to practice transformative leadership. Most importantly, the findings also highlighted existing class-based bias related to colonialism and patriarchal norms. This study contributes to the overall understanding of leadership experiences of Caribbean women of color and adds to the limited literature on this topic within the Caribbean region. Lastly, the findings of this study can support further extensive research on this group of leaders and perhaps inform policies and practices of the Ministry of Education of the Republic of Trinidad and Tobago / Graduate

イギリスにおけるアボリショニズム(奴隷貿易・奴隷制廃止運動)は、1780年代に開始された。その中心的組織は、ロンドン奴隷貿易廃止委員会であった。この組織の中核にいたのは、クウェイカー教徒と英国国教会福音主義派である。彼らは、大衆的な議会請願運動を主導し、それをバックに奴隷貿易廃止法成立に取り組んだ。この法律は、1807年に成立した。その後1823年に、反奴隷制協会が結成され、さらに広範な大衆運動が繰り広げられ、1833年に奴隷制は廃止された。しかし、これで奴隷が完全に解放されたわけではなかった。彼らは年季奉公人として、元の奴隷主の下で週45時間働かなければならなかった。年季奉公人制が廃止されたのは1838年である。 / The abolitionists' movement in Britain began in 1780s. The Quakers and the Anglican evangelicals spearheaded the movement whose organization was the London Abolition Committee. They collected several hundred thousand signatures of people against the slave trade. The abolition of the British slave trade was effected on 1807. The anti-slavery associstion was formed in 1823. Ten years later slavery was abolished in the British colonies. But the slaves were not emancipated completely, because they, as an apprentice, were obligated to work 45 hours per week under their former masters.The apprenticeship was abolished in 1838. / 博士(経済学) / Doctor of Economics / 同志社大学 / Doshisha University

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