Letteratura scientifica selezionata sul tema "Paléoenvironnement – Kerguelen, Îles (Terres australes et antarctiques françaises)"
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Articoli di riviste sul tema "Paléoenvironnement – Kerguelen, Îles (Terres australes et antarctiques françaises)":
Jeanblanc-Risler, Florence. "Les Terres australes et antarctiques françaises : des territoires-frontières au cœur des enjeux de la planète". Administration N° 279, n. 3 (4 ottobre 2023): 54–56. http://dx.doi.org/10.3917/admi.279.0054.
De Smet, W. H. "Pourriotia carcharodonta, a new genus and species of monogonont rotifer from subantarctic Îles Kerguelen (Terres Australes et Antarctiques Françaises)". Annales de Limnologie - International Journal of Limnology 39, n. 3 (settembre 2003): 273–80. http://dx.doi.org/10.1051/limn/2003022.
Recq, Maurice, Isabelle Le Roy, Philippe Charvis, Jean Goslin e Daniel Brefort. "Structure profonde du mont Ross d'après la réfraction sismique (îles Kerguelen, océan Indien austral)". Canadian Journal of Earth Sciences 31, n. 12 (1 dicembre 1994): 1806–21. http://dx.doi.org/10.1139/e94-161.
Tesi sul tema "Paléoenvironnement – Kerguelen, Îles (Terres australes et antarctiques françaises)":
Herlédan, Maïwenn. "Biodiversité des amibes à thèque et environnements de l'archipel de Kerguelen : caractérisation actuelle et évolution récente sous contrainte climatique". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILR002.
The objective of this PhD is to describe the current diversity of testate amoebae on the Kerguelen archipelago depending on climate and environmental context and to understand the recent evolution of the last 260 years by a paleoenvironmental approach combining microscopic observations, sedimentology and geochemistry. Located at the polar front in the sub-Antarctic zone, the Kerguelen archipelago is subject to extreme wind and precipitation conditions while being preserved from direct anthropic impacts. This makes it an ideal natural environment to study the impact of global climate change on the environment.Two scientific campaigns on the Kerguelen archipelago in 2019 and 2021 have allowed us to collect samples of current plants (mainly bryophytes and azorelles), underlying soils and soil cores. The samples studied were selected to reflect the geographical and geological diversity of the archipelago, in terms of rainfall (west-east contrast), sedimentary nature (organic soil, alluvial sediments, etc.. ) and petrographic context (basalts - phonolites). Optical observations of the testate amoebae communities growing in the plant samples (101 samples) have allowed us to build a new database of testate amoebae in the archipelago. Sedimentological and geochemical analyses (water content, elemental and isotopic analyses, mineralogy) were carried out in parallel on 485 soil samples in order to characterize the environmental parameters.This work has allowed to update and complete the 1981 database of 50 species with the description of 107 species of testate amoebae. Sedimentological analyses of soils revealed significant differences in terms of weathering between the western and eastern parts of the archipelago, reflecting contrasting rainfall patterns. This trend is also reflected in the testate amoebae assemblages whose diversity, variable according to the type of environment, is much greater in the west. The coupling of these different observations has made it possible to highlight the ecological affinities of certain species with specific environments, which depend mainly on the water content of the sediment, the type of environment and the vegetation, thus allowing the definition of indicator species. The use of this approach to reconstruct recent paleoenvironments from the different soil cores has allowed us to highlight local changes in the environment, which could be attributable to recent climate change. This study demonstrates the relevance of testate amoebae not only as an environmental indicator but also for tracing the recent evolution of paleoenvironmental conditions under climatic constraints
Gautier, Isabelle. "Les Basaltes des îles Kerguelen (Terres australes et antarctiques françaises)". Paris 6, 1987. http://www.theses.fr/1987PA066171.
Imbaud, Pierre. "Dynamique saisonnière d'une communauté bactérioplanctonique subantarctique (Archipel de Kerguelen)". Lyon 1, 1987. http://www.theses.fr/1987LYO11752.
Chapuy, Bruno. "Les smectites des sédiments marins quaternaires du plateau de Kerguelen-Heard (Océan indien austral) : nature et origines : relation avec l'environnement volcanique des îles Kerguelen, littoral et marin". Bordeaux 1, 1988. http://www.theses.fr/1988BOR10529.
Plenier, Guillaume. "Fluctuations du champ paléomagnétique terrestre enregistrées par les laves de l'Archipel des Kerguelen (partie australe de l'Océan Indien) et détermination de leur direction de mise en place". Montpellier 2, 2002. http://www.theses.fr/2002MON20186.
Leyrit, Hervé. "Kerguelen : cartographie et magmatologie des presqu'iles Jeanne d'Arc et Ronarc'h". Paris 11, 1992. http://www.theses.fr/1992PA112257.
Boussès, Patrick. "Biologie de population d'un vértébré phytophage introduit, le lapin (Oryctolagus cuniculus) dans les îles subantarctiques de Kerguelen". Rennes 1, 1991. http://www.theses.fr/1991REN10128.
Gendron-Badou, Aïcha. "Paléopositions du front polaire antarctique au cours du Pléistocène dans la région de Kerguelen (Océan Indien austral)". Paris, Muséum national d'histoire naturelle, 1996. http://www.theses.fr/1996MNHN0024.
Koubbi, Philippe. "L'ichtyoplancton de la partie indienne de la province kerguelenienne (bassin de Crozet et plateau de Kerguelen) : identification, distribution spatio-temporelle et stratégies de développement larvaire". Paris 6, 1992. http://www.theses.fr/1992PA066204.
Moine, Bertrand. "Les enclaves ultramifiques-mafiques riches en volatils de Kerguelen (TAAF, Océan Indien), transferts de fluides et métasomatisme mantellique en contexte intraplaque océanique : étude pétrologique, géochimique (éléments en traces par LAM-ICP-MS) et isotopique (O, C, H)". Saint-Etienne, 2000. http://www.theses.fr/2000STET4002.