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Auteur Didier Galop |
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Paysages / Serge Briffaud in Petite encyclopédie des Pyrénées, 4 (10/1999)
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Titre : Paysages Type de document : Imprimé Auteurs : Serge Briffaud ; Didier Galop Année de publication : 1999 Article en page(s) : 2-4 Langues : Français (fre) Catégories : [CBNPMP-Thèmes] Paysages
[CBNPMP-Géographique] PyrénéesNote de contenu : Extrait du "Dictionnaire des Pyrénées" paru aux éditions Privat. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=151972
in Petite encyclopédie des Pyrénées > 4 (10/1999) . - 2-4Briffaud, S., Galop, D. 1999. Paysages. Petite encyclopédie des Pyrénées, 4: 2-4.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R2793 R2 Revue Centre de documentation Revues Consultable Recent climatic and anthropogenic imprints on lacustrine systems in the Pyrenean Mountains inferred from minerogenic and organic clastic supply (Vicdessos valley, Pyrenees, France) / Anaëlle Simonneau in The holocene, 23 (12) (2013)
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Titre : Recent climatic and anthropogenic imprints on lacustrine systems in the Pyrenean Mountains inferred from minerogenic and organic clastic supply (Vicdessos valley, Pyrenees, France) Type de document : Imprimé Auteurs : Anaëlle Simonneau ; Emmanuel Chapron ; Thierry Courp ; Kazuyo Tachikawa ; Gaël Le Roux (1978-) ; Sandrine Baron ; Didier Galop ; Marta Garcia ; Christian Di Giovanni ; Mikael Motellica-Heino ; Florence Mazier ; Anthony Foucher ; Thomas Houet ; Marc Desmet ; Edouard Bard Année de publication : 2013 Article en page(s) : 1764-1777 Catégories : [CBNPMP-Thèmes] Enjeux de conservation des lacs d'altitude
[CBNPMP-Géographique] PyrénéesRésumé : High-resolution seismic profiling has been combined with geochemical analyses of both watershed samples and five lacustrine cores retrieved from two natural lacustrine basins of glacial origin: Lake Majeur and Lake Sigriou (1630 m a.s.l. and 1995 m a.s.l., respectively, Eastern French Pyrenees). Identifying specific minerogenic and organic markers of autochthonous and allochthonous supply, data allow documenting past climatic and anthropogenic pressures. Over the past century, the lacustrine sediment of Lake Majeur has been essentially composed of algae, drastically contrasting with the natural sedimentary infill of the basin, mainly resulting from soil erosion from the mid-late Holocene. Since ad 1907, the Lake Majeur has been used for hydroelectricity production. Human-induced lake-level regulations, affecting up to 37% of the lacustrine surface, have increased by fourfold the accumulation rate of the lake and favoured water enrichment. Rubidium abundance within the lacustrine sediments of the two lakes reflects the mid-late Holocene palaeohydrology. After dam construction in ad 1907, greater quantities of rubidium found in Lake Majeur sedimentary infills indicate drier climatic periods, such as from ad 1975 to ad 1982, during which water reservoirs were particularly in demand. Inversely, before the dam was built, rubidium fluctuations were correlated with wetter conditions and hydrological events were recorded as sandy layers deposited by canyon reactivation, synchronous with European climatic deterioration phases. We notably document that the Mediaeval Climate Anomaly was interrupted by some humid periods dated c. ad 940, ad 1080, ad 1100 and ad 1250. We also date the onset of the 'Little Ice Age' c. ad 1360 and identify that this period was wetter after c. ad 1500. Lien pérenne : DOI : 10.1177/0959683613505340 / HAL : insu-00907274 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150792
in The holocene > 23 (12) (2013) . - 1764-1777Simonneau, A., Chapron, E., Courp, T., Tachikawa, K., Le Roux, G., Baron, S., Galop, D., Garcia, M., Di Giovanni, C., Motellica-Heino, M., Mazier, F., Foucher, A., Houet, T., Desmet, M., Bard, E. 2013. Recent climatic and anthropogenic imprints on lacustrine systems in the Pyrenean Mountains inferred from minerogenic and organic clastic supply (Vicdessos valley, Pyrenees, France). The holocene, 23(12): 1764-1777.Documents numériques
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Article (2013)URL
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Titre : Transfer of marine mercury to mountain lakes Type de document : Imprimé Auteurs : Sophia V. Hansson (1981-) ; Jeroen Sonke ; Didier Galop ; Gilles Bareille ; Séverine Jean (1975-) ; Gaël Le Roux (1978-) Année de publication : 2017 Article en page(s) : 12719 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Enjeux de conservation des lacs d'altitude
[CBNPMP-Thèmes] Pollution de l'eauRésumé : Stocking is a worldwide activity on geographical and historical scales. The rate of non-native fish introductions have more than doubled over the last decades yet the effect on natural ecosystems, in the scope of biologically mediated transport and biomagnification of Hg and Hg-isotopes, is unknown. Using geochemistry (THg) and stable isotopes (N, Sr and Hg), we evaluate natal origin and trophic position of brown trout (Salmo trutta fario), as well as mercury biomagnification trends and potential pollution sources to three high-altitude lakes. Farmed trout show Hg-isotope signatures similar to marine biota whereas wild trout shows Hg-isotope signatures typical of fresh water lakes. Stocked trout initially show Hg-isotope signatures similar to marine biota. As the stocked trout age and shifts diet to a higher trophic level, THg concentrations increase and the marine Hg isotope signatures, induced via farm fish feed, shift to locally produced MeHg with lower δ202Hg and higher Δ199Hg. We conclude that stocking acts a humanly induced biovector that transfers marine Hg to freshwater ecosystems, which is seen in the Hg-isotopic signature up to five years after stocking events occurred. This points to the need of further investigations of the role of stocking in MeHg exposure to freshwater ecosystems. Lien pérenne : DOI : 10.1038/s41598-017-13001-2 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150824
in Scientific reports > 7 (2017) . - 12719Hansson, SV., Sonke, J., Galop, D., Bareille, G., Jean, S., Le Roux, G. 2017. Transfer of marine mercury to mountain lakes. Scientific reports, 7: 12719.Documents numériques
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Article (2017)URL
est un tiré à part de Paleoecological events during the last 15 000 years. Regional syntheses of paleoecological studies of lakes and mires in Europe / B.E. Berglund (1996)
Titre : Type regions F-zg and F-r, the northern slope of the Pyrenees Type de document : Tiré à part d'ouvrage Auteurs : Guy Jalut ; Sandrine Aubert ; Didier Galop ; Michel Fontugne ; Jean-Marc Belet Année de publication : 1996 Importance : p. 612-632 Catégories : [CBNPMP-Thèmes] Chorologie, endémisme, cartographie d'espèce, atlas, catalogue, centre dispersion, région florale, migration
[CBNPMP-Thèmes] Paléobotanique, PaléontologieRésumé : From the Atlantic Ocean to the Mediterranean Sea, the Pyrenees form the westernmost mountain chain of E-W orientation in the south of western Europe. We can distinguish two regions : an Atlantic zone and a Pyrenean zone. The Pyrenean chain shows in each of these zones a great diversity of local climatic characteristics. This paper attempts to illustrate the methodological approach we need to reach a palaeoecological synthesis. Five or six studied sites in different vegetation belts of the Chaîne des Hurtières are presented. Lien pérenne : HAL : halshs-00967261 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=83919 Jalut, G., Aubert, S., Galop, D., Fontugne, M., Belet, J.M. 1996. Type regions F-zg and F-r, the northern slope of the Pyrenees. In: Paleoecological events during the last 15 000 years. Regional syntheses of paleoecological studies of lakes and mires in Europe. John Wiley & Sons, [S.l.]: 612-632.Documents numériques
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Chapitre d'ouvrage (1996)URL