Dissertations / Theses on the topic 'New Caledonia'
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Horowitz, Leah Sophie. "Stranger in one's own home : a micropolitical ecological analysis of the engagements of Kanak villagers with a multinational mining project in New Caledonia /." View thesis entry in Australian Digital Theses Program, 2003. http://thesis.anu.edu.au/public/adt-ANU20031015.150235/index.html.
Full textSadlier, Ross Allen. "Systematic Studies on the Scincid Lizards of New Caledonia." Thesis, Griffith University, 2010. http://hdl.handle.net/10072/366402.
Full textThesis (PhD Doctorate)
Doctor of Philosophy by Publication (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
Full Text
Small, D. "The Politics of Colonial Education in New Caledonia." Thesis, University of Canterbury. Education, 1994. http://hdl.handle.net/10092/815.
Full textBruy, David. "Diversity, ecology and evolution of monocaulous plants in New Caledonia." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG087/document.
Full textThe convergent evolution in growth habit is a fundamental phenomenon linking plant ecology and evolution. Remarkably illustrated in island biotas, this phenomenon has never been identified in the original and megadiverse New Caledonian biodiversity hotspot. Through an approach combining plant architecture, functional traits, taxonomy, phylogeny and environmental data, this thesis analyses the evolutionary history of the scarcely known monocaulous growth habit in New Caledonia. Monocauls are self-supporting woody plants whose cardinal functions rely on a single visible stem. In New Caledonia, they are represented by 182 dicotyledonous species belonging to 41 genera and 30 families and are critically endangered. The repeated evolution of the monocaulie in New Caledonia, resulting from at least 31 independent events, is one of the most remarkable cases of convergence in insular environments. In the genus Atractocarpus (Rubiaceae), monocauly evolved recently two to three times through branch reductions into inflorescences, emphasizing the importance of heterochronic processes in the evolution of growth habit. Monocauly is strongly correlated with several traits illustrating major constraints in functional coordination. The evolution of monocauly is strongly associated with rainforests and ultramafic substrate, and seems to have contributed to the diversification of lineages by niche partitioning. The remarkable convergence toward monocauly in New Caledonia can be explained by four major hypotheses: (i) the structural features of rainforests (related to cyclone frequency and intensity) favoring unidirectional exploration of space, (ii) the edaphic constraints associated with ultramafic substrate favoring architectural pauperization, (iii) the historical absence of large native browsers to which monocauls are particularly sensitive, and (iv) the persistence of rainforest during – and spread-out after – glacial episodes that served as refugia and further provided ecological opportunities
Kouneski, Elena G. "Mitochondrial DNA origins and affinities of the Kanak of New Caledonia." Diss., Online access via UMI:, 2009.
Find full textCarson, Michael Thomas. "Inter-cultural contact and exchange in Ouvea (Loyalty Islands, New Caledonia)." Thesis, University of Hawaii at Manoa, 2002. http://hdl.handle.net/10125/704.
Full textTaylor, Margaret Alison. "Cultural politics : discord and factionalism in New Caledonia, 1919 to 1993." Thesis, London School of Economics and Political Science (University of London), 1997. http://etheses.lse.ac.uk/1479/.
Full textTrueba-Sanchez, Santiago. "Ecology, forms and functions of the basal angiosperms from New Caledonia." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT179/document.
Full textNew Caledonia (NC) is one of the main biodiversity hotspots (Myers 1988), this is because of its remarkable plant diversity, its endemism rates, among the highest in the world (79%), and because of the vulnerability of its flora. One of the main originalities of New Caledonia flora is based on the presence of a large number of taxa recognized, due to their phylogenetical positions, as the most ancient extant representatives of angiosperms. For a long time, New Caledonia has been considered as an early upset fragment of the Gondwana (Pelletier 2006) that suffered an interrupted history of isolation which conferred the evolutionary particularities that we observe today. However, recent evidences show that NC has derived from the Australian land during the late Mesozoic (~80 Mya), the island was then submerged during the first half of the Cenozoic (Pelletier 2006) and a reemergence of the island seems to have occurred ~37 Mya (Cluzel et al. 1998). After the reappearance of the island above the sea level, several events of recolonisation occurred and they wrought the biodiversity that we observe nowadays (Pillon 2012). NC presents humid forests which are unique relics; under the influence of climate changes, these forests have virtually disappeared from other regions of the globe (Morat et al. 1986). The lineages of “relictual” angiosperms, mainly subservient to these humid forests, have a great scientific and patrimony value, as they can be considered as genuine windows on the past. These taxa are susceptible to contain primitive characters which have either disappeared in most of the existing flowering plants, or that are still shared by a narrow number of them. The identification and the study of these characters are therefore determinants for the comprehension of angiosperms evolution. Some ecological features of these panchronic species, may have either contributed to the huge radiation of extant angiosperms, or they may have contributed to the ecological settling of angiosperms within the Mesozoic flora, providing them with a developmental repertoire for the subsequent explosion of their diversity. This PhD project aims to study the ecological, anatomical and functional diversity of basal angiosperms and it seeks to analyze the evolutionary patterns of these structural and functional features. We will consider here as “basal” angiosperms a great group of flowering plants that has diverged before the monocot and eudicot node. This group is conformed by the ANITA grade, formed by Amborella (a single species endemic to NC), Nymphaeales (waterlilies and other herbaceous aquatic plants) and Austrobaileyales (aromatic woody plants). The Magnoliid subclass, a clade of flowering of early divergence, which contains plants considered as paleodicots by Cronquist (1988), will be also included in the analysis of the « basal » taxa. More recently, the Magnoliids have been redefined as a clade comprising Chloranthales, Canellales, Laurales, Magnoliales, et Piperales (APG III, 2009). In a second part of the project, a fieldtrip to Mexico will be held in order to include speces belonging to the Chloranthaceae and Schisandraceae, as well as Cabombaceae et Nymphaeaceae, by this means, we will incorporate species belonging to all the orders of the “basal” angiosperms, reinforcing the comparative analysis. This research work will lean on the recent publications of the phylogenetic relations within basal angiosperms
Campbell, Hamish John. "Stratigraphic significance of the Triassic bivalves Daonella and Halobia in New Zealand and New Caledonia." Thesis, University of Cambridge, 1985. https://www.repository.cam.ac.uk/handle/1810/250867.
Full textChanter, Alaine, and alaine chanter@canberra edu au. "Contested Identity: the media and independence in New Caledonia during the 1980s." The Australian National University. Research School of Pacific and Asian Studies, 1996. http://thesis.anu.edu.au./public/adt-ANU20040923.133021.
Full textSecchiari, Arianna. "Geochemical and Sr, Nd, Pb isotope investigation of the New Caledonia ophiolite." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT173.
Full textThe New Caledonia ophiolite hosts one of the largest obducted mantle section in the world, hence providing a unique insight for the study of upper mantle processes. These mantle rocks belong to an “atypical” ophiolitic sequence, which is dominated by refractory harzburgites but it also includes minor spinel and plagioclase lherzolites. Upper crust is notably absent in the ophiolite, with the exception of some mafic-ultramafic cumulates cropping out in the southern part of the island. Although the New Caledonia ophiolite has been under investigation for decades, its ultra-depleted nature has made its characterization an analytical challenge, so that few trace element data are available, while isotopic data are completely missing. In this thesis a comprehensive geochemical study (major, trace element and Sr-Nd-Pb isotopes) of the peridotites and the associated intrusive mafic rocks from the New Caledonia ophiolite has been carried out. The peridotites are low-strain tectonites showing porphyroclastic textures. Spinel lherzolites are undepleted lithotypes, as attested by the presence of 7-8 vol.% of Na2O and Al2O3-rich clinopyroxene (up to 0.5 wt.% Na2O; 6.5 wt.% Al2O3), Fo content of olivine (88.5-90.0 mol.%) and low Cr# of spinel (13-17). Conversely, harzburgites display a refractory nature, proven by the remarkable absence of primary clinopyroxene, very high Fo content in olivine (90.9-92.9 mol.%), high Mg# in orthopyroxene (89.8-94.2) and Cr# in spinel (39-71). REE contents show abyssal-type patterns for spinel lherzolites, while harzburgites display U-shaped patterns, typical of fore-arc settings.Spinel lherzolites REE compositions are consistent with relatively low degree (8-9%) of fractional melting of a DMM source, starting in the garnet stability field. Conversely, REE models for harzburgites indicate high melting degrees (20-25%) of a DMM mantle source under spinel faies conditions, consistent with hydrous melting in forearc setting. Plagioclase lherzolites exhibit melt impregnation microtextures, Cr- and TiO2-enriched spinels and REE, Ti, Y, Zr progressive increase with respect to spinel lherzolites. Impregnation models indicate that plagioclase lherzolites may derive from spinel lherzolites by entrapment of highly depleted MORB melts in the shallow oceanic lithosphere. Mafic intrusives are olivine gabbronorites with a very refractory composition, as attested by high Fo content of olivine (87.3-88.9 mol.%), very high Mg# of clinopyroxene (87.7-92.2) and extreme anorthitic content of plagioclase (An = 90-96 mol.%). The high Mg#, low TiO2 concentrations in pyroxenes and the anorthitic composition of plagioclase point out an origin from ultra-depleted primitive magmas in a convergent setting. Geochemical trace element models show that the parental melts of gabbronorites are primitive magmas with striking depleted compositions, bearing only in part similarities with the primitive boninitic melts of Bonin Islands. The first Sr, Nd and Pb isotope data obtained for the New Caledonia ophiolite highlight the presence of DM mantle source variably modified by different processes.Nd-Sr-Pb isotopic ratios for the lherzolites (+6.98≤ƐNdi≤+10.97) indicate a DM source that suffered low-temperature hydrothermal reactions. Harzburgites are characterized by a wide variation of Sr, Nd and Pb isotopic values, extending from DM-type to EMII compositions (-0.82≤ƐNdi≤+17.55), suggesting that harzburgite source was strongly affected by subduction-related processes. Conversely, combined trace element and Sr-Nd-Pb isotopic data for gabbronorites indicate a derivation from a source with composition similar to Indian-type mantle, but affected by fluid input in subduction environment
Herring, Jamie. "Globalization and its effects on forest diversity: A case study of New Caledonia." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26489.
Full textMummery, Christopher Robert. "The struggle for survival, the origins of racism in New Caledonia, 1843-1902." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ55164.pdf.
Full textButler, Anita. "Passionate ambivalence : New Caledonia and Franco-Australian relations in the Pacific, 1983-1995 /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09AR/09arb985.pdf.
Full textKorson, Cadey. "Mapping Narratives of Self-Determination, National Identity, and (Re)balancing in New Caledonia." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1443154738.
Full textMiller, Kimberly Michelle. "The Darien Scheme: Debunking the myth of Scotland's Ill-Fated American Colonization Attempt." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1461842100.
Full textEdo, Junko. "Narratives of 'Kanak identity' in New Caledonia - its concepts and history of Kanak identity struggle." Phd thesis, Canberra, ACT : The Australian National University, 2003. http://hdl.handle.net/1885/10789.
Full textCauchard, Aurelie Daniele. "A study of space in Caac, an Oceanic language spoken in the north of New Caledonia." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/a-study-of-space-in-caac-an-oceanic-language-spoken-in-the-north-of-new-caledonia(6ff1f9db-a026-4d9c-a280-f7e9419e7ef5).html.
Full textChen, Par Jian Yao Joyce. "Déconstruction des constructions discursives de la Nouvelle-Calédonie: Analyse critique du discours dominant et du discours alternatif depuis 1983." Thesis, Department of Government and International Relations, 2020. https://hdl.handle.net/2123/21662.
Full textFoan, Amanda Gillian. "History of the New Caledonia Barrier Reef over the last 1.2Myrs : links with regional palaeoceanography and palaeoclimate." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/22852.
Full textPétriglieri, Jasmine Rita. "Alteration of asbestiform minerals under sub-tropical climate : mineralogical monitoring and geochemistry. The example of New Caledonia." Electronic Thesis or Diss., Nouvelle Calédonie, 2017. http://portail-documentaire.unc.nc/files/public/bu/theses_unc/These_Jasmine_Petriglieri-derniere_version_these.pdf.
Full textUnder humid tropical to sub-tropical conditions, weathering processes and supergene mineralization are the main responsible for genesis and release of asbestos fibres. The New Caledonia is one of the largest world producers of Ni ore that is formed by the alteration of ultramafic rocks. Almost all outcrops of geological units and open mines contain serpentine and amphibole, also as asbestos varieties. Mining companies must therefore deal with the health concerns related to environmental exposure to mineral fibres. At present, there is not a technique capable to instantly characterize an asbestos fibre in situ, providing information about size and distribution, morphology, chemical composition and alteration grade. However, the acquisition of all these parameters is necessary for determining the health risk associated to fibre exposition. The employment of specialized tools such as Polarized Light Microscopy associated to Dispersion Staining (PLM/DS) and portable Raman spectroscopy has proved extremely effective in the improvement of performance and rapidity of data acquisition and interpretation, even in the presence of strongly fibrous and altered samples. Regardless of the alteration state, a great variability in morphology was observed (SEM investigation). Preliminary geochemical analyses have proved that the physical-mechanical effect of fluid circulation within the porous of fibres and lamellae, associated to chemical elemental exchange at rock/waters interface, favoured the dissociation of fibres and their release in the environment. A focus was set on fibrous antigorite, recognized as asbestos only by Caledonian legislation, but still not by European law
Berman, Maïa. "Impacts of anthropogenic fires and invasive ants on native ant diversity in New Caledonia : from genes to communities." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20086/document.
Full textHabitat destruction, biological invasions and their interaction are global drivers of biodiversity loss. The New Caledonian hotspot of biodiversity is threatened by both anthropogenic fires and invasive ants: it is important to understand their impacts on its biota. Because biodiversity spans several levels of organisation (from genes to communities) and relates to different attributes (compositional, structural and functional), this thesis takes a hierarchical approach to address this issue. Ants are of great ecological importance, especially in tropical biomes, and their classification into functional groups provides a global framework for analysing their response to disturbance. My aims were therefore to investigate the impacts of anthropogenic fires and invasive ants, and their interaction, on the native New Caledonian ant fauna at different spatial (global, regional, local) and temporal (short and long term) scales, and at different levels of biological organisation (community, species, genes). The study contributes to an improved knowledge of the New Caledonian ants, by revealing the lack of specialised subterranean species, and by investigating island-scale patterns of ant communities, in relation to habitat and invasion. The mechanisms by which fire impacts native ants, either as a standalone process or in association with invasion could be identified. In particular, I show that fire, by creating macro- and microhabitats favoured by invasive ants, facilitates invasion, which then causes further diversity declines, either in the short- (post-burning) or long-term (forest fragmentation). The hierarchical approach used enabled the detection of contrasting trait-derived responses at the species and genetic level, in addition to responses measured at the community level. This study highlights the advantage of a holistic approach to investigating biodiversity-related issues
Nicholson, Kirsten Ngaire. "The Tangihua complex, New Zealand : implications for cretaceous-oligocène convergent margin processes in the SW Pacific from comparison with the Poya terrane, New Caledonia." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10266.
Full textSmati, Hossem Edine. "Physical forcing of zooplankton in the upper oligotrophic ocean off Bermuda (northwestern Atlantic) and New Caledonia (southwestern Pacific) from acoustics and net measurements." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4073.
Full textPhysical forcing drives the space and time discontinuity (patchiness) of plankton in the ocean. The thesis was focused on the role of these forcing on the zooplankton, studied using both acoustic and traditional methods with net sampling. The study was based on two examples. The first one concerns the northwestern Sargasso Sea where high resolution time-series data on 0-200m macrozooplankton abundance and distribution off Bermuda was estimated from volume backscattering strength (Sv) measured with a 153-Khz ADCP. Three types of eddies were identified: a productive cyclonic eddy, the periphery of a mode water eddy, and the periphery of an anticyclonic eddy. Sv values increased during passage of theses eddies, with a more pronounced increase associated with the edge of the cyclonic and the anticyclonic eddies, suggesting a significant biological response to localized upwelling in the high velocity boundary of these eddies. In the second example, spatial and temporal distribution of zooplankton off New Caledonia was studied during two multidisciplinary cruises in 2011. Zooplankton variability was assessed using net sampling together with acoustic measurements (shipborne ADCP, scientific echosounder and TAPS). Higher amplitudes of diel vertical migration (DVM) of zooplankton were associated with higher abundance of large zooplankton and cold waters to the south of the study area, while lower DVM amplitudes in the north were associated with warmer waters and higher abundance of small organisms. These acoustic measurements clearly evidenced the role of physical forcing, particularly mesoscale features, in shaping zooplankton space and time distribution
Read, Tyffen Chloe. "Population Structure, Migration and Habitat Ecology of the Green Turtle (Chelonia mydas) in the Grand Lagon Sud of New Caledonia." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367599.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Engineering
Science, Environment, Engineering and Technology
Full Text
Guerrier, Gilles. "Epidemiology of leptospirosis in New Caledonia and Futuna : symptomatic infections in children, symptomatic reinfections and incidence of Jarisch-Herxheimer reactions." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066012/document.
Full textLeptospirosis is an endemo-epidemic zoonotic disease associated with potentially fatal renal, cardiovascular or pulmonary failure. Several aspects of the disease are poorly explored, including infections in children, Jarisch-Herxheimer reactions (JHR) and symptomatic re-infections. The objectives of the studies were the following: to describe disease spectrum and outcome differences in children and adolescents admitted for leptospirosis in a large at-risk population; to quantify frequency of and risk factors for JHR in leptospirosis management; and to assess incidence and characteristics of reinfection by leptospirosis in the Pacific region. Using a retrospective data collection, clinical and laboratory data were obtained on hospitalized confirmed cases in New Caledonia and in Futuna. A case-control study was designed to identify risk factors using a logistic regression model. There are four principal findings from this series of studies with direct implications for clinical practice in those settings. First, leptospirosis in New Caledonia is responsible for a limited number of admissions among children due to milder symptomatic clinical presentation. Second, although generally assumed to be a rare event, the true prevalence of JHR in leptospirosis is unknown in most part of the world. The awareness of this event is probably insufficient considering the significantly high proportion of JHR observed in Futuna. Third, recurrent episodes of symptomatic leptospirosis appear to be non-severe. Finally, specific immunity resulting from a previous episode of leptospirosis with the serovar Copenhageni did not protect against subsequent infection against the same serovar. Future research based those results may provide insights into the still challenging pathogenesis of this complex infectious disease
Horowitz, Leah Sophie, and LeahH@ihug com au. "Stranger in One's Own Home : a micropolitical ecological analysis of the engagements of Kanak villagers with a multinational mining project in New Caledonia." The Australian National University. Faculty of Science, 2003. http://thesis.anu.edu.au./public/adt-ANU20031015.150235.
Full textDeLong, Kristine Lee. "Paleoclimatic reconstruction and evaluation of sub-centennial climate variability in the late Holocene using records from massive corals (New Caledonia), tree-rings (New Mexico) and speleothems (China)." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002726.
Full textDeLong, Kristine L. "Reconstructing 20th century SST variability in the southwest pacific : a replication study using multiple coral Sr/Ca records from New Caledonia." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001734.
Full textMyagkiy, Andrey. "Mineralization of Nickel in saprolitic ore of New Caledonia : Dynamics of metal transfer and modeling of coupled geochemical and hydrodynamic processes." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0277/document.
Full textNew Caledonia hosts significant lateritic nickel reserves, and presently became the fifth largest Ni producer in the world. These deposits are generally thought to be closely as- sociated with the intense chemical and mechanical weathering of peridotite bedrock that is a principal source of nickel. Thus, the main ore genesis model for Ni ores in New Caledonia is based on a single per descensum model where most elements (Mg, Ni, and Si) are leached from the surface, particularly, during lateritic soil development. Nickel is then concentrated either in the fine-grained laterite where goethite is the main Ni bearer, the so-called ’lateritic ore’, or below the laterites, in the saprolite level, where nickel occurs as goethite and several types of Mg-Ni silicates, in particular kerolite. Recent mineralogical and structural observations together with mining data have revealed a lot of different types of heterogeneities associated with the distribution and mineralogy of Ni bearing minerals. Therefore, in depth investigations of Ni mobility, its retardation processes along with its governing chemical and hydrodynamic parameters are of big importance for understanding and subsequent prediction of Ni distribution in profiles of New Caledonia. Such an investigation is an objective of the present work. The concept is based on the development of i) a powerful 1D model with particular emphasis on Ni geochemical behavior during ophiolite weathering, its comparison with in situ observations, and detailed understanding of trace elements mobility, and ii) 2D hydro-geochemical model coupled with complex hydrodynamics, that would additionally provide new insight into the structural control on Ni redistribution and mineralization. While the 1D simulations provide a remarkable result for understanding the chemical features that drive Ni retention processes in a profile, 2D model appears to be a powerful tool for understanding how local Ni-enrichments may form. The results of this model show the reactivation of Ni from upper horizons and its concentration in neo-formed silicates in bottom of the saprolite. The reactivated Ni comes mostly from the saprolite horizon due to the redissolution of previously formed Ni-bearing silicates and still persisting in this olivine zone. Modeling has revealed minor contribution of the laterite horizon (Ni-oxi-hydroxides) into the Ni remobilization. The lateral infiltration of water with remobilized Ni from areas such as topographic highs to downstream slope areas leads to the formation of richest deposits in this lower part of profile. The manner of redistribution is fully governed by the topographic slopes, orientation and position of the fractures. Presented models appear to be of importance in attempt of explanation of Ni mineralization processes, revealing the main keys to understanding the control of trace elements mobility in ultramafic environment. The latter gives new insights into the Ni distribution in present day profiles and, therefore, may greatly help in mineral prospecting and forecasting the distribution of future resources
Marre, Jean-Baptiste. "Quantifying economic values of coastal and marine ecosystem services and assessing their use in decision-making : applications in New Caledonia and Australia." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/76132/1/Jean-Baptiste_Marre_Thesis.pdf.
Full textColombani, Hélène. "L'imaginaire dans le mythe canaque : analyse des images, symboles et archétypes dans les mythes canaques." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENL015.
Full textWhile scientific progress offers unimaginable opportunities, constraints of industrialization, urbanization and modern technology never cease to reverse the field of the intangible and spiritual. Long spared Oceania remains a privileged space where the impregnation of traditions and nature remained alive and meaningful. “Imagination in Kanak myths” is the subject of our research, the opening of a novel exploratory field which leads to the revelation of the “Real hidden” bases this approach. The contribution of the study and research of the first missionaries, linguists and anthropologists has provided a set of data and myths that describe and interpret the organization of the Kanak society, its customs and traditions. Investigations of ethnology remained away from traditional theories and discoveries of the Imaginary Freud, Jung and Bachelard were precursors. We will call the methods of analysis and investigation of the collective unconscious and depth psychology, to fit the field of mythology Kanak. The implementation of a corpus of myths collected at the beginning of colonization, explains the structural composition of each story, which develops their “genetic identification card”, and imagine a new method of exploring the world of myths. Implementation of “mythocritic” Gilbert Durand adapted and supplemented by mythanalysis, performs an exploratory mythodologie of the imaginary of " sermo mythicus". Constellations of images, symbols and archetypes decrypted in these ancient myths, then reveal the deep semantic as well as joining the universal archetypes. Our aim is to highlight the relevance of previous theories that have revolutionized such fields as psychology, philosophy, and literature up and opening new horizons for the interpretation of oral traditions which are major among the most old Oceania, and to confirm their rich symbolism and their contribution to the knowledge of Anthropos that Leenhard had emphasized
Stephans, Christie L. "Assessing the Reproducibility of Coral-based Climate Records: A Multi-proxy Replication Test using Three Porites lutea Coral Heads from New Caledonia." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000165.
Full textMcMenamin, Dorothy. "Leprosy and Stigma in the South Pacific: Camaraderie in Isolation." Thesis, University of Canterbury. School of Humanities, 2009. http://hdl.handle.net/10092/2913.
Full textBurns, Zackory T. "Quantifying the sociality of wild tool-using New Caledonian crows through an animal-borne technology." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:16db8026-53e4-4fb0-aa69-80d7cc34e183.
Full textBen, Aissa Fatma. "Ecologie microbienne des systèmes hydrothermaux marins alcalins de la baie de Prony (Nouvelle-Calédonie)." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4760.
Full textWe studied the microbial ecology of an alkaline hydrothermal submarine shallow field (0-50 m) located in Prony Bay (PHF) in the south of New Caledonia (SW Pacific) similar to the deep alkaline hydrothermal site (800m) of Lost City (LCHF) (Mid-Atlantic Ridge). Similarly to LCHF, PHF is an ultramafic hydrothermal system functioning on the basis of serpentinization reactions of the mantle rocks, releasing anoxic, highly alkaline fluids (to pH 11) rich in calcium, and in dissolved hydrogen and methane. The Prony hydrothermal field (PHF) is characterized by large carbonate chimneys emitting fluids with temperatures not exceeding 40 °C. Molecular approaches revealed a prevalence of Bacteria (Firmicutes, Deltaproteobacteria…) over Archaea (Methanosarcinales). Regarding microbial cultures, they were unsuccessful for most major trophic groups (sulfate-reducing bacteria, methanogens) with the exception of fermentative representatives of the phylum Firmicutes. Two novel bacteria belonging to this phylum were isolated. They include (i) Vallitalea pronyensis which is likely associated with hydrothermal vents and (ii) Alkaliphilus hydrothermalis which should be indigenous to alkaline fluids emitted from chimneys since its growth optimal physicochemical conditions match those of fluids. These two bacteria represent the first anaerobic microorganisms isolated from alkaline hydrothermal serpentinized systems so far
Gonson, Charles. "Intégration des usages récréatifs et de la biodiversité marine pour la gestion et l'évaluation des espaces côtiers. Application aux Aires Marines Protégées de Nouvelle-Calédonie à partir de suivis de la fréquentation et la biodiversité et d'un modèle d'aide à la gestion." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066136/document.
Full textCoastal areas are complex socio-ecosystem where ecological, human and decisional compounds show multiple and reciprocal relationships. Because of the growth of population and tourism sector, coastal areas are permanently threatened through increase of recreational uses and diversification of related activities. To better understand coastal areas functioning, it is necessary to take into account uses and their management. Monitoring data over a ten years period revealed that recreational uses greatly increased especially within Marine Protecting Areas (MPA), during week-end days and warm season resulting to higher and more frequent frequentation peaks. While, practices within MPA are managed to decrease impacts, pressures associated with recreational uses are higher because of the concentration of users within MPA. As a consequence, ecological state decrease and social carrying capacity has been reached in several sites. Environmental quality is an important feature of satisfaction for recreational users but their activity lead to ecological impacts on fish, bird and habitat diversity of reef ecosystems. In addition, users’ concentration and the diversification of sometimes conflicting practices decrease quality of experience of users and can lead to their displacement to other sites. As a consequence, pressures spread to less accessible sites, often not regulated and thus more threatened.Results allowed defining a model describing relationship between biodiversity, uses and management response. This model was used to test management scenarios, useful for integrated coastal area management and for identify knowledge gaps
Nguyen, Thi Bich Ngoc. "Commercial mud crab Scylla Serrata : Study on growth, energy and protein requirement of juveniles in the view to develop peleted feed for crab farming in New Caledonia." Thesis, Nouvelle Calédonie, 2014. http://www.theses.fr/2014NCAL0057/document.
Full textIn New Caledonia, there is the strong political will to diversify aquaculture which is mainly based on shrimp farming. In this context, mud crabs have been considered as a potential species for aquaculture development. One of the main constraints to develop crab farming is the availability of formulated feed. Thus, the main purpose of this thesis is to get information on the crab nutritional requirements in order to formulate a balanced diet. However, we had to clarify first how many species of mud crab were present in New-Caledonia. The result of our morphological and genetic investigations carried out on 63 specimens from 9 areas of the west and northeast coast of New-Caledonia confirmed that only one species, Scylla serrata, is commercialized in this country. Consequently, S. serrata was used in our nutritional study based on two experiments to: i) evaluate the soy protein concentrate (SPC) compared with the fishmeal as the main protein source and ii) determine the optimum level of SPC in the diet for molting and tissue growth. We observed two tissue growth phases within one molt cycle (MC): a fast tissue growth (FTG) occurred after ecdysis until early intermolt stage (30% of MC) which is followed by a slow tissue growth (STG) period from intermolt to ecdysis (70% of MC). Protein and lipid deposition followed the same trend than tissue growth while ash level increased quickly during five days after molt and then remained stable until the next molt. The two growth phases were correlated with the voluntary feed intakes (VFI) which was maximum during 2 weeks after ecdysis and then decreased by 50% over the five following weeks to reach a baseline until the next molt. Intake energy was allocated mainly for growth during FTG period and for maintenance during STG period. During STG, 28% of the ingested energy was accumulated for the next ecdysis. Replacement of fishmeal by SPC as main protein source did not affect tissue growth, efficiency of feed utilization and energy budget of crabs whatever the tissue growth period considered. The dietary SPC inclusion of 42% in the diet promoted growth (molt frequency and tissue growth), feed efficiency and retention of energy, protein and lipid. Hypothesis related to ammonia toxicity from catabolism of proteins in excess or anti-nutritional factors from soybean could explain the negative effects of higher inclusion of SPC in the diet for juvenile crabs. In conclusion, our work brings novel information on tissue growth, energy budget during a molt cycle and the ability of juvenile crab to use SPC as a main source of protein. On this basis we suggest to formulate nutritionally balanced diet without fishmeal to farm juvenile mud crabs S. serrata
Jeanpert, Julie. "Structure et fonctionnement hydrogéologiques des massifs de péridotites de Nouvelle-Calédonie." Thesis, La Réunion, 2017. http://www.theses.fr/2017LARE0047/document.
Full textWater resources of hard-rock (gneisses or granites) aquifers have significantly been studied in the past two decades. The hydrogeological behavior and structure of these aquifers are thus relatively well understood. On the other hand, aquifers in mantle-type basements, such as peridotites, are poorly studied and understood, mainly because they are not common and of limited extent. In this context, New Caledonia is a great laboratory offering unique opportunity to improve the knowledge of these original types of hydrosystems in tropical climate. Thus, the objective of this thesis is to improve the knowledge of these aquifer systems within weathered peridotites. Firstly, the study focuses on the characterization of the weathered layers of the peridotites composed of, from top to bottom, iron oxides/ferricrete, laterite, coarse saprolite and saprock (ie. top of the bedrock, with up to 20 % of weathered material). More than 60 hydraulic tests are performed and results were compiled with existing data. Mean hydraulic conductivity (K) of laterites is estimated around 1.10-7 m/s while mean value in coarse saprolites and saprock is around 8.10-7 m/s. Heterogeneity of this altered layer is high; K varies between six orders of magnitude and hydraulic head data analysis reveals a hydraulic connection with the deep fractured bedrock. Secondly, the fresh rock part of peridotites is studied. Fracture network analysis is derived from outcrop structural measurements and from the description of about 1000 m of cumulated borehole cores. This work highlights the importance of serpentine network, because of its high density and its critical impact on weathering. Moreover, the observations reveal that hydraulic conductivity decreases with depth within the substratum, due to the vertical decrease of weathered fractures density. These new results allow defining a structural framework of the massifs. It is characterized by a primary decimetrical fracture network closely related to the serpentine network. This network is overprinted by a secondary weathering network which reveals decametric spacing (ca. 30 m) and in places K values of 10-5 m/s. At depth, spacing is hectometrical and fractures are sealed by lithostatic pressure and/or subsequent mineral precipitations. These deca- and hectometric fracture networks, which are also visible on the scale effect of hydraulic conductivity, are primarily vertical and are the result of dissolution instabilities occurring during weathering processes. However, low- angle fractures do occur and allow the percolation of the network. Finally, on the basis of these new results and the integration of all existing data from different massifs a new hydrogeological conceptual model is proposed at the scale of a massif. The model includes a homogeneous lateritic aquitard and a coarse saprolite and saprock aquifer which is about 50 m thick. The bedrock is subdivided into three layers whose hydraulic conductivity decreases from 2.10-7 m/s to 2.10-8 m/s, respectively 50 and 250 m below the aquifer base. Numerical modelling validates this unitary conceptual model and reveals that the saturation of the massifs depends on their morphology. At last, several aspects require further research. The role of the ferricrete layer must be specified and considered in the hydrological model. Moreover, distribution of the fracture network remains to be fully addressed and should be studied with care given the potential development of highly permeable structures that could conform to pseudo-karstic drains. The applied results of this work are available in a “Technical guide” and a “Technical report” of the “HYPERK” CNRT Project
Llorca, Sylvie. "Les concentrations cobaltiferes supergenes en nouvelle-caledonie : geologie, mineralogie." Toulouse 3, 1986. http://www.theses.fr/1986TOU30231.
Full textMallet, Delphine. "Des systèmes vidéo rotatifs pour étudier l'ichtyofaune : Applications à l’analyse des variations spatiales et temporelles dans le lagon de Nouvelle-Calédonie." Thesis, Nouvelle Calédonie, 2014. http://www.theses.fr/2014NCAL0056/document.
Full textEstimating diversity and abundance of fish is fundamental for the understanding of community structure and dynamics of coral reefs. Observations are generally gathered using Underwater VisualCensus (UVC). These informations can also be collected by underwater video techniques involving no diver and allowing a high spatial and temporal coverage. The first part of this PhD thesis is a review ofpublications using underwater video techniques between 1952 and 2012. The second part present two rotating video systems used to study the diversity of ichthyofauna and habitats in the lagoon of NewCaledonia: the STAVIRO (for "STAtion VIdeo ROtative") and the MICADO (for "Module d’Imagerie Côtier, Autonome pour le Développement de l’Observation sous-marine"). The third part of this work is acomparison of these techniques with UVCs and an analysis of the “observer effect” for the rotating video techniques. The comparison between rotating video systems and UVC showed that: (i) fish communitydata collected by UVC and by STAVIRO differed significantly; (ii) species richness and density of large species were not significantly different between techniques; (iii) species richness and density of smallspecies were higher for UVC; (iv) density of fished species was higher for STAVIRO; and (v) only UVC detected significant differences in fish assemblages structure across reef type. The comparison of fishcounts obtained from the same videos by different observers showed that for a defined list of species, estimates of species richness and total abundance can be considered as similar between observers withsufficient experiences (> 6 months). The last part of this PhD is an application of rotating video techniques to the study of daily temporal variations of the ichthyofauna. Daily variations were observed depending onthe time of day and the tidal state and typical patterns of variations have been described for some species groups. The outcomes of this work bring original insights of new techniques complementary to traditionaltechniques in order to enhance our understanding of the functioning and dynamic of coral reef
Motuhi, Sofia-Elena. "Valorisation de substances naturelles marines de Nouvelle-Calédonie d'intérêt en traitement anticancéreux." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1B050.
Full textMarine zones associated with coral reef systems of the New Caledonia archipelago have been investigated for almost forty years with respect to their plant and invertebrate biodiversity and chemodiversity. In particular, thanks to their unique subtropical position close to tectonically active zones and to the Australian subcontinent, the complex reef systems of New Caledonia’s lagoons are home to a highly diverse marine fauna that is relatively protected from climatic disturbances. This is reflected by the score of novel bioactive molecules that have been discovered and characterized, several of which have been actively investigated for their antineoplastic and antitumoral potential activities. We paid particular attention to macroalgal species that induce programmed cell death, as an approach to detecting original anticancer bioactivities. Seven species of red (Rhodophyceae) and brown (Phaeophyceae) macroalgae collected in the South lagoon of New Caledonia (decree N°197-2016/ARR/DENV) have demonstrated interesting in vitro anticancer activity. In particular, one red macroalgal species led to the characterization of two bioactive natural products, the structure of one of which has not been described to date. Biological tests have shown that these two compounds could be promising candidates as antimitotic kinase inhibitors agents for the development of targeted anticancer chemotherapies. Interesting biological activities have also been revealed from several molecular isolates from two species of brown macroalgae, showing high selectivity towards non-cancerous cells. In the continuing investigations of the therapeutic potential of natural products isolated from New Caledonian marine organisms, this doctoral thesis has highlighted the therapeutic potential of several species of Rhodophyceae and Phaeophyceae which has hitherto been largely unexplored
Nichols, Matthew David. "The impact of France on conflict and stability in the South Pacific." Thesis, University of Canterbury. Political Science and Communication, 2007. http://hdl.handle.net/10092/993.
Full textSellier, Virginie. "Développement de méthodes de traçage sédimentaire pour quantifier l'impact des mines de nickel sur l’hyper-sédimentation des rivières et l'envasement des lagons de Nouvelle-Calédonie Investigating the use of fallout and geogenic radionuclides as potential tracing properties to quantify the sources of suspended sediment in a mining catchment in New Caledonia, South Pacific Combining visible-based-colour parameters and geochemical tracers to improve sediment source discrimination in a mining catchment (New Caledonia, South Pacific Islands) Reconstructing the impact of nickel mining activities on sediment supply to the rivers and the lagoon of South Pacific Islands: lessons learnt from the Thio early mining site (New Caledonia)." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASV013.
Full textNew Caledonia, an island located in the south-western Pacific Ocean and currently the world's sixth largest producer of nickel, is facing unprecedented sedimentary pollution of its river systems. Indeed, nickel mining that started in the 1880s accelerated soil erosion and sediment transport processes. Hyper-sedimentation of the Caledonian hydro-systems has been observed after the deployment of mining activities on the archipelago. Although this phenomenon exacerbates the flooding problems experienced in these tropical regions, the sediment contributions generated by nickel mining remain unknown and are nevertheless required to guide the implementation of control measures to reduce these sediment inputs.To this end, a sediment fingerprinting study was carried out in a "pilot" catchment: the Thio River catchment (397 km²), considered as one of the first areas exploited for nickel mining in New Caledonia. Different tracers such as radionuclides, elemental geochemistry or "colour" properties were tested to trace and quantify the mining source contributions to the sediment inputs generated during two recent cyclonic flood events (tropical depression in 2015, cyclone Cook in 2017). A sediment core was also collected in the floodplain of the Thio River catchment to reconstruct the temporal evolution of these mining source contributions. The results of this study show that mining sources dominated sediment inputs with an average contribution ranging from 65-68% for the 2015 flood event to 83-88% for the 2017 flood event. The impact of the spatial variability of precipitation was highlighted to explain the variations in the contributions of these sources across the catchment. The temporal variations in the contributions of the mining sources deduced from the analysis of the sediment core were interpreted at the light of the mining history in the Thio River catchment (pre-mechanization, mechanization, post-mechanization of mining activity). The contributions of mining sources were again dominant with an average contribution along the sedimentary profile of 74 %. Once validated, this tracing method has been tested in four other catchments of New Caledonia in order to evaluate the validity of the approach in other contexts
Chalkiadakis, Eleftherios. "Bio-prospection et biodiversité des micro-organismes des milieux atypiques des lagons de la Nouvelle-Calédonie : Premières évaluations du potentiel de production de nouvelles molécules d’intérêt biotechnologique." Thesis, Nouvelle Calédonie, 2013. http://www.theses.fr/2013NCAL0054/document.
Full textPrevious works on marine bacteria led to the discovery of molecules of great biotechnological interest. Under unusual physical and chemical conditions some microorganisms have developed various survival strategies including exopolysaccharides (EPS) and Poly-3-hydroxyalkanoates (PHAs) production. Due to their many interesting biological, physical and chemical properties, those polymers have found applications in many industrial sectors. Due to interesting physical and chemical properties, EPS can find applications in many industrial sectors including the food industry, cosmetics, for oil and metal recovery from industrial waste and in the mining industry as well. During the last decades EPS have also been demonstrated as interesting bioactive molecules with many applications for human health. PHAs are biopolyesters accumulated as granules in bacteria in order to endure long starving periods. Those biodegradable biopolymers can be used as an alternative to petroleum derived polymers and can be produced from renewable carbon sources. PHAs exhibit a wide variety of properties and structures depending of the carbon source available and the microorganism used for the production. New Caledonia (NC) is frequently referred as a hotspot biodiversity. During a prospection campaign performed in different marine costal ecosystems of NC, a great number (770) of bacteria were isolated from different locations. Screening showed that 55% of the isolates were able to produce under lab conditions EPS and 53% to produce PHA. Partial chemical characterization was performed on purified samples using colorimetric methods, infrared spectrometry (FTIR), gas chromatography (GC) and nuclear magnetic resonance (NMR). Marine bacteria from New Caledonian ecosystems were shown to produce EPS with unusual chemical composition with potential applications in cosmetics. Preliminary experiments also showed high metal-binding capacity with applications in bioremediation. Different PHAs were also produced using different types of sugars and oil as renewable resources. Blue biotechnologies can have various applications in many industrial sectors (Health, food industry, environment, cosmetics etc…) and there is a great international demand for new molecules issue from marine areas. New Caledonian marine bacteria have proved their capacity for producing innovative biopolymers with a wide range of application that can be valuating in on short time period (environment, cosmetics) or at long time (pharmaceutics, surgeries). These applications are promising in order to develop
Leoni, Edouard. "Recherches sur l'autonomie des finances publiques de la Nouvelle Calédonie dans le cadre de l'accord de Nouméa de 1998 : bilan et perspectives." Thesis, Clermont-Ferrand 1, 2012. http://www.theses.fr/2012CLF10388.
Full textPas de résumé en anglais
Villegente, Matthieu. "Caractérisation biochimique et moléculaire de mécanismes de la germination d’espèces endémiques de Nouvelle-Calédonie." Thesis, Nouvelle Calédonie, 2013. http://www.theses.fr/2013NCAL0050/document.
Full textNew Caledonia possesses one of the world most rich, diverse and unique flora. Its high endemism (74,7%) is partly due to the gondwanian origin of its flora and to the high speciation induced by the ultramafic soils rich in heavy metals, including nickel. If this element is the source of the country richness, its mining exploitation and human colonization of the land induce ecosystems degradation. The study and comprehension of the new Caledonian flora is essential to be able to preserve, protect and restore its rich biodiversity. Preservation and restoration both depend on seeds. They are the unit of dispersal of higher plants, and responsible of their world domination on flora. We focused our study on the biochemical characterisation of seed biology of two extraordinary species, Amborella trichopoda, the sister to all extant flowering plants and Psychotria gabriellae, one of the world most nickel hyperaccumulating plant.Proteomic characterisation of A. trichopoda seeds was the first study that documented a rudimentary embryo proteome. This approach provides a better understanding of the mechanisms involved in the control of dormancy and germination of seeds with morphological dormancy such as A. trichopoda. The results obtained allow us to highlight the molecular maturity of the rudimentary embryo, as well as confirming the basal position of Amborella trichopoda trough phylogenetic analyses of selected protein families. The characterisation of the protein evolution during germination highlights massive mobilisation of storage proteins before the end of germination sensu stricto, and suggests a new definition of germination for seeds with rudimentary embryo.Previous proteomics characterisation of P. gabriellae seeds revealed a high representation of DING proteins that are known to be involved with ABC type transporters or to bind phosphorus. This observation was associated with an observed gradient of nickel inside the seed presumably to protect the embryo from its toxicity. During this work, we confirmed the presence of this protein family in the seeds, from which the belonging to the eukaryotic kingdom remains a subject of debate. To answer about the origin of these proteins in seed, we tried to determine the presence or not of bacteria in the dry mature seed. Four endophytic bacteria were identified but none of them seems to produce such proteins. However, the physiological signification of these bacteria to account for physiological features of the Psychotria gabriellae seeds and their exceptional tolerance toward nickel toxicity remains to be established.Beside this proteomics approach, we sequenced a large number of transcripts expressed during Psychotria gabriellae seed formation. This database will enrich the very limited genomic data available for this specie. It will allow a better understanding of the mechanisms involved in nickel hyperaccumulation, and may highlight novel tools for phytoremediation
Collot, Julien. "Évolution géodynamique du domaine Ouest-offshore de la Nouvelle-Calédonie et de ses extensions vers la Nouvelle-Zélande." Brest, 2009. https://tel.archives-ouvertes.fr/tel-00540173.
Full textThe southwest Pacific results from the fragmentation of Gondwanaland since the Cretaceous time. The purpose of the current PhD work is to deepen our understanding of the history of the New Caledonia and Fairway basins, located west of New Caledonia, in order to better constrain the geodynamical evolution of the SW Pacific from Cretaceous to Oligocene. The analysis of new geophysical data has led to distinguish 3 main phases of this fragmentation : 1. Mid Cretaceous formation of the Fairway-Aotea Basin in a continental intra-arc position. The formation of this basin reflects the initial stage of continental fragmentation of the Eastern Gondwana margin. The causes of this fragmentation are to be searched for in a major change of the dynamics of the peri-Pacific subduction zone. 2. Latest late Eocene local deformation of the Northern NCB, synchronously with the New Caledonian obduction. We suggest that as the ophiolitic nappe was being obducted onto New Caledonia, the NC Basin subsided under the effect of the loading and underthrusted to accommodate the compressional deformation as a foreland flexural basin. Regional Eocene Oligocene subsidence of the structures linking NC to New Zealand. The morphostructural style of this deformation leads us to suggest that detachment of the lower crust is the cause of subsidence. We therefore propose a model in which the renewal of the Australia-Pacific convergent plate boundary around 45 Ma would have driven the lithosphere to thicken, leading to a root instability and to its detachment in the mantle. These newresults have regional petroleum implications, which are discussed in the PhD
Kettle, Christopher. "Conservation genetics of New Caledonian Araucaria." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/15163.
Full textVincent, Bryan. "Contribution de la symbiose fixatrice d'azote dans l'adaptation d'une légumineuse à des sols contrastés : le modèle Acacia spirorbis et les contraintes édaphiques extrêmes rencontrées en Nouvelle-Calédonie." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG050/document.
Full textAcacia spirorbis is a leguminous tree from New Caledonia naturally found on a wide range of soils (calcareous, ultramafic and volcano-sedimentary) and able to establish symbioses with soil microorganisms, including nitrogen-fixing bacteria. The contribution of this symbiosis in the plant adaptation to contrasted edaphic environments, sometimes extremes, has been investigated according to i) the nitrogen-fixing potential of A. spirorbis in its natural ecosystems, ii) the characterization of its rhizobia and iii) the plant adaptive response to heavy metals inside its roots tissues, especially in nodules.Therefore, we revealed that the nitrogen-fixing symbiosis provided more than 80% of the plant total nitrogen in natural population naturally occurring on calcareous, ultramafic and volcano-sedimentary soils. This value is top notch among other Acacia species, where A. mangium, A. melanoxylon and A. mucronata presented mean values of 50%, 43% and 58%, respectively. Acacia spirorbis established nitrogen-fixing symbioses with alpha- and bêta-proteobacteria, genus Bradyrhizobium and Paraburkholderia, respectively, thus revealing a wide range of symbiotic partner and a low selectivity. Noteworthy, the taxonomy and phenotypes of these symbionts are structured and adapted to edaphic parameters. Finally, chemical signatures of internal nodules tissues presented similarities with soils chemical properties, thus indicating a potential management of heavy metals inside these tissues.Altogether, these data suggest that the nitrogen-fixing symbiosis might significantly contributes to Acacia spirorbis adaptation towards contrasted soils with strong edaphic conditions as an extreme polymetallic toxicity