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Journal articles on the topic 'Volcanisme – Niger – Aïr (Niger)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ahmed, Yacouba, Moussa Konaté, and Moussa Harouna. "Tectono-magmatic reactivation of Téfidet Cretaceous trough during Cenozoic (Aïr, Niger)." Bulletin de la Société Géologique de France 187, no. 2 (2016): 73–82. http://dx.doi.org/10.2113/gssgfbull.187.2.73.

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AbstractThe Téfidet trough (eastern Niger) belongs to the Ténéré megasystem set of Cretaceous rifts N130°E to N170°E oriented, corresponding to the direction of the Lake Chad-Hoggar tectonic axis.The study of the relationship between the structure of the trough and alkaline fissural volcanism that developed there from the Oligocene to Plio-Quaternary shows the uniqueness of the Téfidet trough compared to the neighboring contemporary volcanic areas of Hoggar, Cameroon, and southern Aïr.The tectono-magmatic reactivation of the Cretaceous Téfidet trough developed in two steps: – a period contempo

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2

Giazzi, Franck, Isabelle Ciofolo, and Karine Alvès. "In Favor of Reintroducing the Niger Ostrich (Struthio camelus camelus) into the Aïr-Ténéré Reserve (Aïr-Niger massif)." Revue de géographie alpine 94, no. 4 (2006): 17–25. http://dx.doi.org/10.3406/rga.2006.5587.

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3

Newby, John E. "Parks for people—a case study from the Aïr Mountains of Niger." Oryx 26, no. 1 (1992): 19–28. http://dx.doi.org/10.1017/s0030605300023188.

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The Aïr Mountains of north-central Niger are relatively unspoilt and contain some of the last remaining populations of addax Addax nasomaculatus, ostrich Struthio camelus and dama gazella Gazella dama in in West Africa. The Aïr Mountain are also home for some 5000 Twaregs, half of whom are cultivators and the other half herders. The Aïr and Tùnùrù National Nature Reserve, which was gazetted in 1988, covers more than 77,000 sq km. It was inspired by concern for the region's unique and increasingly threatened wildlife, wcology. The Nigerien Wildlife Service and the IUCN/WWF project that supports

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4

Leger, J. M. "Géologie et évolution magmatique du complexe plutonique d'Iskou (Aïr, Niger)." Journal of African Earth Sciences (1983) 3, no. 1-2 (1985): 89–96. http://dx.doi.org/10.1016/0899-5362(85)90026-0.

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5

Anthelme, F., R. Michalet, and M. Saadou. "Positive associations involving the tussock grass Panicum turgidum Forssk. in the Aïr-Ténéré Reserve, Niger." Journal of Arid Environments 68, no. 3 (2007): 348–62. http://dx.doi.org/10.1016/j.jaridenv.2006.07.007.

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6

Moreau, C., D. Demaiffe, Y. Bellion, and A. M. Boullier. "A tectonic model for the location of Palaeozoic ring complexes in Aïr (Niger, West Africa)." Tectonophysics 234, no. 1-2 (1994): 129–46. http://dx.doi.org/10.1016/0040-1951(94)90208-9.

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7

Liégeois, J. P., R. Black, J. Navez, and L. Latouche. "Early and late Pan-African orogenies in the Aïr assembly of terranes (Tuareg shield, Niger)." Precambrian Research 67, no. 1-2 (1994): 59–88. http://dx.doi.org/10.1016/0301-9268(94)90005-1.

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8

Newby, John E., and John F. Grettenberger. "The Human Dimension in Natural Resource Conservation: A Sahelian Example from Niger." Environmental Conservation 13, no. 3 (1986): 249–56. http://dx.doi.org/10.1017/s0376892900036304.

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The Republic of Niger is establishing a vast national nature reserve in the Aïr Massif and Ténéré Desert. With its 77,360 km2, the reserve will cover a wide variety of arid-land habitats. Both rainfall and vegetation are sparse, but the area harbours a varied fauna that includes a number of threatened species. The Twareg inhabitants of the reserve subsist by raising livestock, by irrigating small gardens, and by caravanning. Their day-to-day existence relies heavily on natural resources, and their continued existence will depend on the conservation of those resources. Drought, desertification,

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9

Ostrowski, Stéphane, Mahaman Sani Massalatchi, and Mamadou Mamane. "Evidence of a dramatic decline of the red-necked ostrich Struthio camelus camelus in the Aïr and Ténéré National Nature Reserve, Niger." Oryx 35, no. 4 (2001): 349–52. http://dx.doi.org/10.1046/j.1365-3008.2001.00205.x.

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AbstractIn 1990 the population of the red-necked ostrich Struthio camelus camelus in the Aïr and Ténéré National Nature Reserve, Niger, was estimated at c. 1600 individuals. During a 14-day survey carried out in the protected area in October and November 2000 no evidence of recent occurrence of ostriches was found, and it appears that the population size has dramatically declined in its favoured habitat. The species seems to have been severely persecuted during the civil war of 1991–1997. Although a small population had remained in the protected area after the conflict, the occurrence of furth

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10

Waugh, Earl H. "Ṣūfī Mystics of the Niger Desert: Sīdī Maḥmūd and the Hermits of Aïr. H. T. Norris". History of Religions 32, № 4 (1993): 385. http://dx.doi.org/10.1086/463353.

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11

Culianu, Ioan P. "Sufi Mystics of the Niger Desert: Sidi Mahmud and the Hermits of Aïr. H. T. Norris." Journal of Religion 72, no. 3 (1992): 489. http://dx.doi.org/10.1086/488981.

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12

Ritz, Michel, William L. Brown, Christian Moreau, and Daniel Ohnenstetter. "An audiomagnetotelluric study of the Meugueur-Meugueur ring structure, Aïr, Niger: ring dyke or cone sheet?" Journal of Applied Geophysics 34, no. 4 (1996): 229–36. http://dx.doi.org/10.1016/0926-9851(95)00022-4.

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13

Giazzi, Franck, Isabelle Ciofolo, and Karine Alvès. "La réintroduction de l'autruche du Niger (Struthio camelus camelus), un projet de développement et de conservation durable dans la Réserve Aïr-Ténéré (massif de l'Aïr-Niger)." Revue de géographie alpine 94, no. 4 (2006): 7–16. http://dx.doi.org/10.3406/rga.2006.5586.

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14

Grettenberger, John F., and John E. Newby. "The status and ecology of the dama gazelle in the aïr and ténéré national nature reserve, Niger." Biological Conservation 38, no. 3 (1986): 207–16. http://dx.doi.org/10.1016/0006-3207(86)90121-7.

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15

Froufe, Elsa, Duarte V. Gonçalves, José Carlos Brito, and David James Harris. "Nuclear and mitochondrial markers reveal the existence of several geographically concordant lineages within a Sahelian gecko species, Ptyodactylus ragazzii." Amphibia-Reptilia 34, no. 1 (2013): 85–93. http://dx.doi.org/10.1163/15685381-00002873.

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The genetic diversity within Ptyodactylus ragazzii was analysed for the first time across the Western part of its range. We have used two mitochondrial (12s rRNA and 16s rRNA) and one nuclear (Cmos) marker to compare results directly with other related Ptyodactylus species, P. oudrii and P. hasselquistii. Results show high levels of intraspecific variability, with at least three divergent mtDNA lineages that have different haplotypes for Cmos and that are geographically concordant. P. ragazzii from Mauritania is probably a distinct species and possibly other lineages too, such as those from th

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16

Gagnol, Laurent. "Les sociétés nomades sont-elles solubles dans la sédentarisation ? Le contre-exemple des Touaregs Kel Ewey (Aïr-Niger)." Espace géographique 35, no. 4 (2006): 367. http://dx.doi.org/10.3917/eg.354.0367.

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17

Brachet, Julien. "Le négoce caravanier au Sahara central : histoire, évolution des pratiques et enjeux chez les Touaregs Kel Aïr (Niger)." Cahiers d'Outre-Mer 57, no. 226-227 (2004): 117–36. http://dx.doi.org/10.4000/com.512.

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18

Rossi, Benedetta. "The Agadez Chronicles and Y Tarichi: A Reinterpretation." History in Africa 43 (December 28, 2015): 95–140. http://dx.doi.org/10.1017/hia.2015.30.

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Abstract:This article focuses on the texts known as the “Agadez Chronicles” and “Y Tarichi,” which have been used by historians of the Central Sahara and Sahel to reconstruct the history of the Sultanate of Agadez and the Ader Kingdom in today’s Republic of Niger. The most frequently cited of these texts are published translations of copies of Arabic manuscripts that were made available to French and British colonial administrators by members of the elites of Agadez, Ader, and Sokoto in the first decade of the twentieth century. This article suggests that the copies handed over to the represen

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19

Ostrowski, Stéphane, Mahaman Sani Massalatchi, and Mamadou Mamane. "Evidence of a dramatic decline of the red-necked ostrich Struthio camelus camelus in the Aïr and Ténéré National Nature Reserve, Niger." Oryx 35, no. 04 (2001): 349. http://dx.doi.org/10.1017/s0030605300032129.

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20

Demaiffe, Daniel, Christian Moreau, William L. Brown, and Dominique Weis. "Geochemical and isotopic (Sr, Nd and Pb) evidence on the origin of the anorthosite-bearing anorogenic complexes of the Aïr Province, Niger." Earth and Planetary Science Letters 105, no. 1-3 (1991): 28–46. http://dx.doi.org/10.1016/0012-821x(91)90118-2.

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21

Konaté, Moussa, Yacouba Ahmed, and Moussa Harouna. "Structural evolution of the Téfidet trough (East Aïr, Niger) in relation with the West African Cretaceous and Paleogene rifting and compression episodes." Comptes Rendus Geoscience 351, no. 5 (2019): 355–65. http://dx.doi.org/10.1016/j.crte.2018.11.009.

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22

Alhassane, Illias, Abdou Babaye Maman Sani, Sandao Issoufou, Saley Mahaman Bachir, and Ousmane Boureima. "Apport Des Images ETM+ Et Du Modèle Numérique De Terrain (MNT) A La Cartographie Des Fractures En Région Montagneuse : Secteur De Timia (Massif De l’Aïr, Nord Du Niger)." European Scientific Journal, ESJ 14, no. 9 (2018): 103. http://dx.doi.org/10.19044/esj.2018.v14n9p103.

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Timia is located at the Aïr massifs region. This locality, which is the substratum that constituted the basement formations, has some difficulty of water supply. This present study focuses on fractures mapping to acquire the best knowledge of the fractured aquifer in Timia zone. The methodological approach is based on landsat7 image processing and DEM, especially directional filtering and shaded digital terrain models. These diverse processing has shown complementarity between the satellites images and DEM in linear mapping on the one hand and in establishing a lineaments map on the other hand

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23

GENIEZ, PHILIPPE, JOSÉ M. PADIAL, and PIERRE-ANDRÉ CROCHET. "Systematics of north African Agama (Reptilia: Agamidae): a new species from the central Saharan mountains." Zootaxa 3098, no. 1 (2011): 26. http://dx.doi.org/10.11646/zootaxa.3098.1.3.

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We studied the taxonomic status of the north African Agama species A. impalearis, A. castroviejoi, and A. boueti. The study of recently collected specimens and museum material, as well as phylogenetic analyses of a short 16S ribosomal RNA gene fragment, revealed the presence of an undescribed species in Adrar des Ifoghas (Mali), Aïr Mountains (Niger), Ahaggar Mountains (Algeria) and Tassili n’Ajjer (Algeria, Lybia), previously mistaken either as A. impalearis or A. agama. The new species, Agama tassiliensis n. sp., clearly belongs to the impalearis – boueti – spinosa species group but differs

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24

Casajus, Dominique. "H. T. Norris: Sūfī mystics of the Niger desert: Sīdī Mahmūd and the Hermits of Aïr. xxxi, 180 pp. Oxford: Clarendon Press, 1990. £27.50." Bulletin of the School of Oriental and African Studies 54, no. 3 (1991): 588–89. http://dx.doi.org/10.1017/s0041977x0000104x.

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25

Stewart, C. C. "Roots of Sūfīsm - Sūfī Mystics of the Niger Desert: Sīdī Maḥmūd and the Hermits of Aïr. By H. T. Norris. Oxford: Clarendon Press, 1990. Pp. xxxi+180. £27.50." Journal of African History 33, № 2 (1992): 322–23. http://dx.doi.org/10.1017/s0021853700032278.

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26

THIOLLAY, JEAN-MARC. "Severe decline of large birds in the Northern Sahel of West Africa: a long-term assessment." Bird Conservation International 16, no. 4 (2006): 353–65. http://dx.doi.org/10.1017/s0959270906000487.

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The current status of most West African birds is little known and may change quickly with increasing human population pressure and agriculture, road, tourism, hunting and mining developments. Following documented declines of raptors in Sudan and the Southern Sahel zones, I compared the number of birds counted along the same eight extensive transect counts in 1971–1973 (3,703 km) and 2004 (3,688 km) in arid steppes, acacia woodlands and desert mountains of northern Mali and Niger (Adrar des Iforhas, Aïr, Ténéré). The once widespread Ostrich Struthio camelus is now extinct west of Chad. No Arabi

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27

Feuerstein, Stefanie, and Kerstin Schepanski. "Identification of Dust Sources in a Saharan Dust Hot-Spot and Their Implementation in a Dust-Emission Model." Remote Sensing 11, no. 1 (2018): 4. http://dx.doi.org/10.3390/rs11010004.

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Although mineral dust plays a key role in the Earth’s climate system and in climate and weather prediction, models still have difficulties in predicting the amount and distribution of mineral dust in the atmosphere. One reason for this is the limited understanding of the distribution of dust sources and their behavior with respect to their spatiotemporal variability in activity. For a better estimation of the atmospheric dust load, this paper presents an approach to localize dust sources and thereby estimate the sediment supply for a study area centered on the Aïr Massif in Niger with a north–

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