Articles de revues : « Mato Grosso (Brésil ; plateau) »

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Becquelin, Pierre. « Recherches archéologiques dans le Haut Xingu, Mato Grosso, Brésil ». Journal de la Société des Américanistes 86, n^o 1 (2000) : 9–48. http://dx.doi.org/10.3406/jsa.2000.1806.

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Vialou, Denis. « Les peintures pariétales de Santa Elina, Mato Grosso, Brésil ». Bulletin de la Société préhistorique française 84, n^o 10 (1987) : 403–6. http://dx.doi.org/10.3406/bspf.1987.9853.

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Castilho da Silva, Marta. « Activisme autochtone et production audiovisuelle au Mato Grosso do Sul, Brésil ». Recherches amérindiennes au Québec 48, n^o 1-2 (5 novembre 2018) : 133–42. http://dx.doi.org/10.7202/1053710ar.

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Au Brésil, la population autochtone compte près de 900 000 personnes réparties en 305 groupes autochtones. La deuxième population autochtone la plus nombreuse se concentre dans l’État du Mato Grosso do Sul. Cet État est devenu un pôle de production agroalimentaire et de biocarburant à grande échelle, et sa population autochtone est à présent la plus menacée du pays. Dans cet article, basé sur son travail de terrain au Mato Grosso do Sul, l’auteure analyse comment les pratiques de l’audiovisuel s’inscrivent dans l’activisme autochtone. Cet activisme s’est développé à partir de 2008 pour prévenir la désintégration sociale des groupes autochtones et pour affirmer leur identité.

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Vilhena-Vialou, Agueda. « Santa Elina : fouilles dans un abri rupestre du Mato Grosso, Brésil ». Bulletin de la Société préhistorique française 84, n^o 10 (1987) : 407–10. http://dx.doi.org/10.3406/bspf.1987.9854.

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Pellegrin, A. O., A. P. Lage, J. R. B. Sereno, E. Ravaglia, M. S. Costa et R. C. Leite. « Campylobactériose génitale bovine dans le Pantanal, Etat du Mato Grosso do Sul, Brésil ». Revue d’élevage et de médecine vétérinaire des pays tropicaux 55, n^o 3 (1 mars 2002) : 169. http://dx.doi.org/10.19182/remvt.9820.

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La prévalence de la campylobactériose génitale bovine a été estimée chez des taureaux au Pantanal, Mato Grosso do Sul, Brésil. La recherche des anticorps par immunofluorescence directe a été effectuée avec les prélèvements des lavages des prépuces de 327 taureaux appartenant à 19 élevages. Ce test a révélé 170 taureaux (52,3 p. 100) positifs, provenant de 17 élevages (89,5 p. 100). Il n’y a pas eu de différence dans le nombre de taureaux positifs lorsque les différents groupes d’âge ont été considérés. En revanche, il y a eu une différence significative dans les élevages de plus de 15 000 ha (χ2 = 6,40 ; df = 1 ; P = 0,01), avec un risque relatif estimé de 1,33 (1,07 < RR < 1,66), par rapport aux élevages de 15 000 ha ou plus petits. Ces résultats ont indiqué que la campylobactériose génitale bovine était répandue dans la région étudiée et était probablement liée au mode de gestion des troupeaux.

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Lehn, Carlos Rodrigo, Elton Luis Monteiro de Assis et Danilo Mesquita Neves. « Elaphoglossum discolor (Kuhn) C.Chr. (Dryopteridaceae, Polypodiales, Monilophyta) : first record for the state of Mato Grosso do Sul, Brazil ». Check List 11, n^o 4 (21 août 2015) : 1715. http://dx.doi.org/10.15560/11.4.1715.

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Elaphoglossum discolor was recently discovered and collected on the Urucum plateau of the Brazilian state of Mato Grosso do Sul, lying in the western outskirts of the Pantanal flood plain. This is the southernmost distribution of E. discolor in Brazil.

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Vienne, Emmanuel de. « Pourquoi chanter les ragots du passé ? Itinéraire historique d’un chant rituel trumai (Mato Grosso, Brésil) ». Journal de la société des américanistes, n^o 97-1 (5 octobre 2011) : 291–319. http://dx.doi.org/10.4000/jsa.11762.

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Sousa, Francisco Diogo Rocha, Lourdes M. A. Elmoor-Loureiro, Luciana de Mendonça-Galvão et Imailton Rodrigues Júnior. « Crustacea, Cladocera, Anomopoda, Ilyocryptidae, Ilyocryptus sarsi Stingelin, 1913 : a new record and geographic distribution in Brazil ». Check List 6, n^o 2 (1 juin 2010) : 330. http://dx.doi.org/10.15560/6.2.330.

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Ilyocryptus sarsi Stingelin, 1913 has a wide distribution in South America, with records from Brazilian states of São Paulo, Mato Grosso do Sul, Minas Gerais, Bahia, Maranhão, Pará, and Amazonas. The present paper reports, for the first time, the occurrence of I. sarsi in the Brazilian Central Plateau. The specimens were found in a wet campo in a natural protect area Gama-Cabeça-de-Veado in Brasília, Federal District, during the rainy season.

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Tsayem Demaze, Moïse. « La Redd+ au Brésil : entre construction du cadre institutionnel et foisonnement des projets pilote ». BOIS & ; FORETS DES TROPIQUES 316, n^o 316 (1 juin 2013) : 17. http://dx.doi.org/10.19182/bft2013.316.a20527.

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Les premières lois sur le mécanisme Redd (Réduction des émissions liées à la déforestation et à la dégradation des forêts) au Brésil ont été adoptées en 2008. Elles précisent les objectifs et fixent le cap, ce qui permet de se rendre compte de l'importance que le Brésil accorde à ce mécanisme, devenu Redd+ du fait de l'élargissement de son périmètre pour qu'il inclue le stockage du carbone dans les sols et plus globalement la gestion dite durable des forêts tropicales. À partir d'enquêtes par entretiens avec des acteurs, et d'observations de terrain, complétées par l'analyse de la réglementation et de la bibliographie, cet article décrypte la construction du cadre institutionnel de la Redd+ au Brésil, en décrivant la contribution financière extérieure. Alors que ce cadre institutionnel est en cours de construction, et qu'une stratégie nationale Redd+ n'est pas encore élaborée et adoptée, l'engouement pour la Redd+ au Brésil paraît indéniable, comme le montrent les nombreuses initiatives à l'échelle des États fédérés (l'Amazonas, le Pará, l'Acre, le Mato Grosso). Les nombreux projets pilotes illustrent aussi cet engouement manifeste. L'inscription territoriale de ces projets pilotes montre qu'ils portent essentiellement sur des espaces faisant déjà l'objet d'une protection (aires protégées, territoires indigènes) alors qu'ils auraient pu porter davantage sur les espaces les plus menacés par la déforestation. L'article aborde en particulier le projet Redd+ de la réserve Juma, et soulève de nombreuses questions : la gouvernance et l'implication ou la participation des populations locales, la comptabilisation des émissions de gaz à effet de serre, la réalité de la déforestation évitée, l'articulation entre l'échelle nationale et l'échelle locale, etc.

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Neves, DRM, et GA Damasceno-Junior. « Post-fire phenology in a campo sujo vegetation in the Urucum plateau, Mato Grosso do Sul, Brazil ». Brazilian Journal of Biology 71, n^o 4 (novembre 2011) : 881–88. http://dx.doi.org/10.1590/s1519-69842011000500009.

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Studies on the herbaceous and sub-shrub layer of cerrado showed the occurrence of modifications in its composition between different regions, demonstrating sensibility to changes in climate, soil and intensity of fires, among other factors. The aim of this study was to describe the phenological variation in a campo sujo vegetation in the Urucum plateau. We established eight transects of 250 m each, 50 m apart. We sampled all flowering and fruiting species located at least three meters from each side of the transect. Beginning in October 2007, one month after an accidental fire occurred in the study site, we analysed flowering and fruiting plants in the transects' area. The intensity of the flowering and fruiting phenophases was not uniformly distributed. This study provide us information about the possible fire influence on the reproductive patterns of the community, presenting flowering peaks in October and November, two months after this event. Regression analysis with monthly rainfall also provides us information about the influence of climate data on the flowering and fruiting peaks.

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Zawadzki, Claudio H., Luiz F. C. Tencatt et Otávio Froehlich. « A new unicuspid-toothed species of HypostomusLacépède, 1803 (Siluriformes : Loricariidae) from the rio Paraguai basin ». Neotropical Ichthyology 12, n^o 1 (mars 2014) : 97–104. http://dx.doi.org/10.1590/s1679-62252014000100010.

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A new unicuspid-toothed armored catfish species of Hypostomus is described from the Bodoquena Plateau, rio Paraguai basin, Mato Grosso do Sul State, Brazil. The new species is distinguished from its congeners, with exception of H. fonchii, by having unicuspid teeth (vs.bicuspid teeth); from H. fonchii it is distinguished by having median series of lateral plates with 26-27 (vs. 28); by lower number of premaxillary and dentary teeth (7-10 vs. 18-21; 8-13 vs. 18-25, respectively); for possessing more depressed head (head depth 15.8-18.1% SL vs. 19.1-22.0% SL); and by the presence of median buccal papilla (vs. absence).

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Bessa, Eduardo, Lucélia Nobre Carvalho, José Sabino et Paola Tomazzelli. « Juveniles of the piscivorous dourado Salminus brasiliensis mimic the piraputanga Brycon hilarii as an alternative predation tactic ». Neotropical Ichthyology 9, n^o 2 (10 juin 2011) : 351–54. http://dx.doi.org/10.1590/s1679-62252011005000016.

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In the district of Bom Jardim, in Nobres, Mato Grosso State, Brazil, there are clear water streams originating on karstic terrain. The dourado, Salminus brasiliensis, is an apex stalking predator in these streams. In clear waters, where visually oriented prey may perceive predator in advance, surprise is needed for successful attacks. These streams are cohabited by other Characiformes, like the frugivorous piraputanga Brycon hilarii, which lives in schools and exhibits body colour and shape similar to the dourados. Here we describe an alternative predatory tactic for juvenile dourado occurring in headwater streams of the Paraguay River basin, in which they act as an aggressive mimic of the piraputanga. Based on 43 h of observations in Bom Jardim, and on additional 11 h in the Bodoquena Plateau Rivers of Mato Grosso do Sul State, we quantified the number of rushes by dourados when they were among piraputangas or foraging alone, and observed the proportion of piraputangas per dourado in multispecific schools. Dourados of up to 30 cm total length (TL) stayed among the piraputangas of similar size hiding within the school and going to the periphery of the school before rushing against prey. The dourados exhibited colours similar to the piraputangas. They not only stayed longer among piraputangas (78% of the observation time), but also rushed against prey more often than when foraging alone (53 rushes/h against 14 rushes/h, respectively).

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ZAWADZKI, CLÁUDIO H., GABRIELA NARDI et LUIZ FERNANDO CASERTA TENCATT. « The crystalline waters of the Bodoquena Plateau revealed Hypostomus froehlichi (Siluriformes : Loricariidae), a new armored catfish from the rio Paraguay basin in Brazil ». Zootaxa 4933, n^o 1 (18 février 2021) : 98–112. http://dx.doi.org/10.11646/zootaxa.4933.1.4.

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The menaced and poorly-known waters of the Bodoquena Plateau revealed a new resident, the stunning Hypostomus froehlichi sp. n., a large-sized armored catfish, which is finally described after more than twenty years since its discovery. The Bodoquena Plateau is drained by the rio Paraguay basin, and is located in the state of Mato Grosso do Sul, Brazil. The new species differs from its congeners on the Bodoquena crystalline waters by having teeth with morphological and numerical variation in adult specimens. There is a continuous range of specimens having about 20 thick and worn teeth to specimens having about 50 thin teeth with intact crowns and lanceolate main cusps. Additional diagnostic characters are: dentaries angled more than 90 degrees, dark blotches, one plate bordering supraoccipital, moderate keel along dorsal series of plates, usually two rows of blotches per interradial membrane on dorsal, pectoral and ventral fins, and by attaining comparatively large size. Hypostomus froehlichi seems to be endemic to the area of the Bodoquena Plateau, in rivers draining to the rio Miranda. The description of the new species reveals a potential conservation flagship species as it is one of the most seen and documented fish by visitors and divers in the clear waters from the touristic, though menaced, Bonito region in Brazil.

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Dubos-Raoul, Marine, et Eve Anne Bühler. « Expansion de l’agribusiness sucro-énergétique au Brésil et modèles de développement : le cas de la région de Dourados (état du Mato Grosso do Sul) ». Géographie, économie, société 17, n^o 4 (30 décembre 2015) : 459–83. http://dx.doi.org/10.3166/ges.17.459-483.

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Bachelet, Caroline. « Utilisation du bois de feu par les chasseurs-cueilleurs de la « Cidade de Pedra » à partir de l’Holocène moyen (Brésil Central, Mato Grosso, Rondonópolis) ». L'Anthropologie 117, n^o 4 (septembre 2013) : 436–58. http://dx.doi.org/10.1016/j.anthro.2013.09.001.

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BARROS, MÁRCIA APARECIDA DE SANT’ANA, ANA MARIA MIZUSAKI, RICARDO WESKA, ANDRÉ DE BORBA, FARID CHEMALE JR et ELISON CARMO DA COSTA. « Petrografia, Geoquímica, Análises Isotópicas (Sr, Nd) e Geocronologia Ar-Ar dos Basaltos de Tapirapuã (Tangará da Serra, Mato Grosso, Brasil) ». Pesquisas em Geociências 33, n^o 2 (29 juin 2006) : 71. http://dx.doi.org/10.22456/1807-9806.19515.

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The basaltic flows from Tapirapuã Formation are exposed at Tangará da Serra region, 250 km from Cuiabá (MT) and the thickness can reach 310 meters. The basalts range from massive dark gray, with colunar disjunctions at the base to purple amygdaloidal at the top. They are generally fine-grained, however gabroics portions have been identified. In thin section the Tapirapuã basalts show subophitic texture. Chemical analyses in these rocks suggest tholeiitic compositions, within continental tectonic environment. There is an enrichment of light rare earth elements when compared to heavy rare earth elements. The studied samples have low contents of TiO2 and P2O5 being similar to low P2O5 and TiO2 group from Serra Geral Formation (Paraná Basin). Analyses of Sr and Nd isotopes show the following results: 87Sr/86Sr between 0.703 and 0.707, ∈Nd from –0.01 to + 2.32 and model ages (TDM)= (931 to 1.267 Ma). 40Ar / 39Ar geochronology of plagioclase crystals from Tapirapuã basalts presented a plateau age of 206 ± 6 Ma, in agreement with previous ages obtained from Anari and Tapirapuã sub-provinces. This result places the volcanic event at the limit of the Triassic-Jurassic periods, related to the opening of the North Atlantic.

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FLAUSINO, NELSON JUNIOR, FLÁVIO C. T. LIMA, FRANCISCO A. MACHADO et MARCELO R. S. MELO. « A new species of Characidium Reinhardt (Characiformes : Crenuchidae) with a unique mid-water behavior from the upper rio Madeira basin, Brazil ». Zootaxa 4816, n^o 3 (17 juillet 2020) : 350–60. http://dx.doi.org/10.11646/zootaxa.4816.3.5.

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A new species of Characidium is described from headwater tributaries of the upper rio Guaporé, Rio Madeira basin, Mato Grosso state, Brazil. The new species can be diagnosed from all congeners, except Characidium summus, for lacking the preorbital and postorbital stripes. It can be diagnosed from the latter species by having 12 circumpeduncular scales (vs. 14), by an adipose fin present (vs. adipose fin absent), and 10–12 bars along the body (vs. absence of bars), among other characters. The new species is so far only known from direct tributaries of the Rio Guaporé at the Serra da Borda, an isolated plateau 300–800 meters above sea level, and possess a behavior very uncommon within the genus, being a mid-water pelagic fish, instead of the benthic behavior of most congeners. Comments on the putative phylogenetic relationships of the new species, as well as some remarks on its unusual behavior within the genus, are presented.

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Gonçalves, HC, MA Mercante et ET Santos. « Hydrological cycle ». Brazilian Journal of Biology 71, n^o 1 suppl 1 (avril 2011) : 241–53. http://dx.doi.org/10.1590/s1519-69842011000200003.

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The Pantanal hydrological cycle holds an important meaning in the Alto Paraguay Basin, comprising two areas with considerably diverse conditions regarding natural and water resources: the Plateau and the Plains. From the perspective of the ecosystem function, the hydrological flow in the relationship between plateau and plains is important for the creation of reproductive and feeding niches for the regional biodiversity. In general, river declivity in the plateau is 0.6 m/km while declivity on the plains varies from 0.1 to 0.3 m/km. The environment in the plains is characteristically seasonal and is home to an exuberant and abundant diversity of species, including some animals threatened with extinction. When the flat surface meets the plains there is a diminished water flow on the riverbeds and, during the rainy season the rivers overflow their banks, flooding the lowlands. Average annual precipitation in the Basin is 1,396 mm, ranging from 800 mm to 1,600 mm, and the heaviest rainfall occurs in the plateau region. The low drainage capacity of the rivers and lakes that shape the Pantanal, coupled with the climate in the region, produce very high evaporation: approximately 60% of all the waters coming from the plateau are lost through evaporation. The Alto Paraguay Basin, including the Pantanal, while boasting an abundant availability of water resources, also has some spots with water scarcity in some sub-basins, at different times of the year. Climate conditions alone are not enough to explain the differences observed in the Paraguay River regime and some of its tributaries. The complexity of the hydrologic regime of the Paraguay River is due to the low declivity of the lands that comprise the Mato Grosso plains and plateau (50 to 30 cm/km from east to west and 3 to 1.5 cm/km from north to south) as well as the area's dimension, which remains periodically flooded with a large volume of water.

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TEIXEIRA, MAURO JR, RENATO SOUSA RECODER, AGUSTÍN CAMACHO, MARCO AURÉLIO DE SENA, CARLOS ARTURO NAVAS et MIGUEL TREFAUT RODRIGUES. « A new species of Bachia Gray, 1845 (Squamata : Gymnophthalmidae) from the Eastern Brazilian Cerrado, and data on its ecology, physiology and behavior ». Zootaxa 3616, n^o 2 (19 février 2013) : 173–89. http://dx.doi.org/10.11646/zootaxa.3616.2.6.

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A new species of Bachia of the bresslaui group, Bachia geralista sp. nov., is described from Planalto dos Gerais, an old and partially dissected plateau extending along the Cerrados of Bahia, Minas Gerais and Tocantins states, Brazil. The new species is morphologically similar to B. bresslaui, with which it has been confused; however head scalation resembles other species from sandy spots within the Cerrado (B. psamophila and B. oxyrhina). Like in B. psamophila and B. oxyrhi-na, the shovel-shaped snout of the new species is highly prominent, a typical trait of psammophilous habits in other gym-nophthalmids. The examination of specimens of B. bresslaui from several populations within the Cerrado revealed great variation among localities, leading to the reidentification of a specimen from Utiariti, Mato Grosso, previously referred to in the literature as the second record of B. bresslaui, as the recently described B. didactyla, suggesting that cryptic diversity might remain still undiscovered within this genus in the Cerrado. Despite occurring in a relatively open Cerrado, thermal physiology of Bachia geralista sp. nov. restricts its occurrence to shaded microhabitats within this habitat.

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Severo-Neto, Francisco, Fabrício B. Teresa et Otávio Froehlich. « Ecomorphology and diet reflect the spatial segregation between two Siluriformes species inhabiting a stream of the Bodoquena Plateau, in Central Brazil ». Iheringia. Série Zoologia 105, n^o 1 (mars 2015) : 62–68. http://dx.doi.org/10.1590/1678-4766201510516268.

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Pimelodella taenioptera Miranda Ribeiro, 1914 and Imparfinis schubarti (Gomes, 1956) are two of the most common fish species in Bodoquena Plateau streams, Paraguay basin. These species have benthic habits and subaquatical observations suggested that they present differentiation in their preference for mesohabitat types. Pimelodella taenioptera shows preference for slow waters, such as pools, while I. schubarti is associated to riffles. In this study we investigated if the known patterns of mesohabitat use of P. taenioptera and I. schubarti can be predict by their ecomorphological and trophic traits. We described the dietary habits and ecomorphological attributes of P. taenioptera and I. schubarti individuals, captured in the Parque Nacional da Serra da Bodoquena (PNSB), Mato Grosso do Sul state, central Brazil. Pimelodella taenioptera presented a more generalist diet, consuming a total of 23 different food items. Imparfinis schubarti have a diet based exclusively on aquatic insects. The ecomorphological analysis revealed that the species differed in relation to five morphological traits associated to habitat use (p <0.01). The results of this study reveal a clear functional dissimilarity between P. taenioptera and I. shubarti. The observed trophic and ecomorphological patterns are congruent with the known habitat use for these species and probably reflect the spatial and temporal variability on conditions and resources present in riffles and pools. Therefore, as expected, the morphological and feeding attributes represent predictive information related to mesohabitat use.

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Félix da Silva, Leandro, et Vitor Matheus Bacani. « Análise da Fragilidade Ambiental e das Áreas de Preservação Permanente da Bacia Hidrográfica do Córrego Fundo, Município de Aquidauana-MS/Analysis of Environmental Fragility and Permanent Preservation Areas of Watershed Stream Fundo, County of Aquidauana ». Caderno de Geografia 27, n^o 49 (2 mai 2017) : 264. http://dx.doi.org/10.5752/p.2318-2962.2017v27n49p264.

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A bacia hidrográfica do córrego Fundo está localizada no município de Aquidauana, no Estado do Mato Grosso do Sul e drena terrenos do Planalto de Maracaju/Campo Grande em direção a depressão do rio Aquidauana. A principal atividade produtiva desenvolvida na bacia é a pecuária extensiva e silvicultura nas áreas de planalto, que estão cada vez mais sendo introduzidas, levando a um aumento no desmatamento da vegetação nativa. Este estudo teve como objetivo analisar os diferentes níveis de fragilidade ambiental da bacia hidrográfica e espacializar a legislação ambiental de acordo com o novo Código Florestal Brasileiro (BRASIL, 2012). Os procedimentos adotados fundamentaram-se nas propostas de Ross (1994) e Crepani et al. (2001), com o uso de geotecnologias. Os resultados apontaram que as áreas de APP, não estão sendo preservadas. A análise da fragilidade ambiental revelou que a baixa vulnerabilidade representa 34,46 % da bacia, e a maior parte se encontra em nível médio (39,21%), seguida por alta (25,74%) e muito alta (0,59%). O uso da terra reduziu as áreas de baixa fragilidade potencial e ampliou as de alta, além do avanço sobre as áreas de APPs, o que vem favorecendo ao aumento da instabilidade ambiental.Palavras–chave: fragilidade ambiental, bacia hidrográfica, áreas de preservação permanente e geotecnologias.AbstractThe Fundo stream watershed is located in the municipality of Aquidauana, in Mato Grosso do Sul state and drains grounds of Plateau Maracaju/Campo Grande toward depression river Aquidauana. The main productive activity developed in the basin is extensive cattle ranching and forestry in plateau areas, which are increasingly being introduced, leading to an increase in deforestation of native vegetation. This study aimed to analyze the different levels of environmental fragility of watershed and spatialise environmental legislation in accordance with the new Brazilian Forest Code (BRASIL, 2012). The procedures adopted to substantiate the proposed Ross (1994) and Crepani et al. (2001), using geotechnologies. The results showed that the areas of APP, are not being preserved. The analysis of the environmental fragility revealed that the low vulnerability represents 34.46% of the basin, and the majority is at medium level (39.21%), followed by high (25.74%) and very high (0.59 %). Land use has reduced areas of low potential fragility and has increased the high areas, in addition to advancing over the areas of APPs, which has favored an increase in environmental instability.Keywords: environmental fragility, watershed, area of permanent preservation and geotechnologies.

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Selva, Evandro Carlos, Eduardo Guimarães Couto, Mark S. Johnson et Johannes Lehmann. « Litterfall production and fluvial export in headwater catchments of the southern Amazon ». Journal of Tropical Ecology 23, n^o 3 (24 avril 2007) : 329–35. http://dx.doi.org/10.1017/s0266467406003956.

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Resolving the carbon (C) balance in the Amazonian forest depends on an improved quantification of production and losses of particulate C from forested landscapes via stream export. The main goal of this work was to quantify litterfall, the lateral movement of litter, and the export of coarse organic particulate matter (>2 mm) in four small watersheds (1–2 ha) under native forest in southern Amazonia near Juruena, Mato Grosso, Brazil (10°25′S, 58°46′W). Mean litterfall production was 11.8 Mg ha−1 y−1 (5.7 Mg C ha−1 y−1). Litterfall showed strong seasonality, with the highest deposition in the driest months of the year. About two times more C per month was deposited on the forest floor during the 6-mo dry season (0.65 Mg C ha−1 mo−1) compared with the rainy season (0.3 Mg C ha−1 mo−1). The measured C concentration of the litterfall samples was significantly greater in the dry season than in the rainy season (49% vs. 46%). The lateral movement of litter increased from the plateau (upper landscape position) towards the riparian zone. However, the trend in C concentration of laterally transported litter samples was the opposite, being highest on the plateau (44%) and lowest in the riparian zone (42%). Stream-water exports of particulate C were positively correlated with streamflow, increasing in the rainiest months. The export of particulate C in streamflow was found to be very small (less than 1%) in relation to the amount of litterfall produced.

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Ruas, Renata De Barros, Gecele Matos Paggi, Camila Aguiar-Melo, Luiza Domingues Hirsch et Fernanda Bered. « Strong genetic structure in Dyckia excelsa (Bromeliaceae), an endangered species found on ironstone outcrops in Pantanal, Brazil ». Botanical Journal of the Linnean Society 192, n^o 4 (8 février 2020) : 691–705. http://dx.doi.org/10.1093/botlinnean/boz099.

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Abstract The plant communities associated with iron-rich outcrops are still little known about to their genetic structure and diversity. Outcrops are often considered to be ‘terrestrial islands’, and gene ﬂow among populations on different outcrops is presumed to be hampered by the isolation effect provided by the surrounding matrix. Here, we studied the genetic diversity and structure of populations of Dyckia excelsa to test the hypothesis that the disjunction of the ironstone outcrops where this species occurs promotes its highly structured genetic variability. Seven nuclear microsatellite markers and two plastid DNA intergenic spacers (rps16-trnK and rpl32-trnL) were used to characterize individuals from seven locations in the region of Urucum Residual Plateau, Mato Grosso do Sul State, Brazil. These markers low haplotype and allelic diversity and high levels of genetic divergence among outcrops, indicating prolonged genetic isolation, with diversification of haplotypes dating from the Pleistocene (1.0 Mya). Pollen movement may occur between neighbouring populations, resulting in a pattern of isolation-by-distance. For conservation purposes, it is recommended that D. excelsa be preserved in situ in each specific location given the low levels of gene ﬂow and the high degree of genetic uniqueness in each group of populations investigated.

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Paillet, Patrick. « Nouvelles découvertes d'art rupestre au Mato Grosso (Cidade de Pedra, Rondonópolis, Brésil)11Communication présentée à la 23e session 2006 du Séminaire international « Représentations préhistoriques » organisé au Musée de l'Homme, sous la direction du Pr. D. Vialou. » L'Anthropologie 110, n^o 4 (octobre 2006) : 547–79. http://dx.doi.org/10.1016/j.anthro.2006.07.010.

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Urban, Danúncia. « Anthidium larocai sp. n. do Mato Grosso e ocorrência de Anthidium sanguinicaudum Schwarz, 1933 no norte do Brasil (Hymenoptera, Megachilidae) ». Acta Biológica Paranaense 26 (31 décembre 1997). http://dx.doi.org/10.5380/abpr.v26i0.686.

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É descrita uma espécie nova do Anthidiini do Mato Grosso, Brasil. Anthidium (Anthidium) larocai sp. n., com clípeo giboso e faixas laterais amarelas nos tergos; e, pela primeira vez, é constatada a ocorrência de Anthidium (Anthidium) sanguinicaudum no norte do Brasil. Abstract A new species of Anthidiini from Mato Grosso, Brazil, Anthidium (Anthidium) larocai sp. n., with protuberant clypeus and lateral yellow bands on the terga, is described; and by the first time, Anthidium (Anthidium) sanguinicaudum is repported from northern Brazil. Résumé Une nouvelie espéce de Anthidiini du Brésil, Anthidium (Anthidium) larocai sp. n. avec le clypeus gibbeaux est décrite; et une note sur la occurrence de Anthidium (A.) sanguinicaudum dans le nord du Brésil est donné.

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Urban, Danúncia. « Duas espécies novas de Saranthidium Moure & ; Hurd e notas descritivas ». Acta Biológica Paranaense 27 (31 décembre 1998). http://dx.doi.org/10.5380/abpr.v27i0.661.

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Duas espécies de Saranthidiurn são descritas: S. chapadicola sp. n. (Brasil, Mato grosso) e S. insulare sp. n. (Brasil, São Paulo). Também são propostos uma chave para a identificação das espécies de Saranthidium, notas descritivas e distribuição geográfica das espécies anteriormente descritas (S. aureocinctum, S. flavopictum, S. furcatum, S. marginatum e S. musciforme). ABSTRACT Two species of Saranthidium from Brazil are described: S. chapadícola sp. n. (from Brazil, Mato Grosso) and S. insulare sp. n (from Brazil, São Paulo). Descriptive notes and geographical distribution about the formely known species of Saranthidium (S. aureocinctum, S. flavopictum, S. furcatum, S. marginatum e S. musciforme) and a key to identify them are given. RÉSUMÉ Deux spéces de Saranthidium du Brésil sont décrits: Saranthidium chapadicola sp.n. (Mato Grosso) et Saranthidiurn insulare sp. (São Paulo). Sont donnés quelques notes sur les spéces connaitres du genre Saranthidium (S. aureocinctum, S. flavopictum, S. furcatum, S. marginatum et S. musciforme) avec une clé pour la identification.

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Dubreuil, Vincent, Camille Delahaye et Adeline Le Strat. « Changements d’occupation du sol et leurs impacts climatiques au Mato Grosso, Brésil ». Confins, n^o 10 (17 novembre 2010). http://dx.doi.org/10.4000/confins.6845.

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Koroiva, Ricardo, Marciel Elio Rodrigues, Francisco Valente-Neto et Fábio de Oliveira Roque. « Odonates from Bodoquena Plateau : checklist and information about endangered species ». Biota Neotropica 17, n^o 3 (14 août 2017). http://dx.doi.org/10.1590/1676-0611-bn-2016-0310.

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Abstract Here we provide an updated checklist of the odonates from Bodoquena Plateau, Mato Grosso do Sul state, Brazil. We registered 111 species from the region. The families with the highest number of species were Libellulidae (50 species), Coenagrionidae (43 species) and Gomphidae (12 species). 35 species are registered in the IUCN Red List species, four being Data Deficient, 29 of Least Concern and two species being in the threatened category. Phyllogomphoides suspectus Belle, 1994 (Odonata: Gomphidae) was registered for the first time in the state.

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Lima, Michele Soares de, Adriana Takahasi, Geraldo Alves Damasceno-Junior et Andréa Cardoso Araujo. « Checklist of the flora in ironstone outcrops at the Urucum Plateau, Corumbá, Mato Grosso do Sul ». Biota Neotropica 19, n^o 3 (2019). http://dx.doi.org/10.1590/1676-0611-bn-2018-0708.

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Abstract: "Cangas" are ironstone outcrops occurring at the foot of the Urucum Plateau, on the western edge of Pantanal, Corumbá-MS. In Brazil, the knowledge about flora and ecology of the plant communities associated with these formations is still incipient. These habitats are among the most threatened and less studied in Brazil because of their association with high quality iron ore deposits. We present a cheklist of the flora from these formations, resulting from different authors' collecting efforts in 10 areas of the Plateau. A total of 302 species have been recorded; they were distributed in 53 botanical families and 175 genera. Poaceae (43 species), Fabaceae (41), Euphorbiaceae (22), Cyperaceae (19), Malvaceae (19), Convolvulaceae (15), Malpighiaceae (13) and Apocynaceae (11) accounted for 60.6% of the species richness. Our data add 59 new occurrences of species of angiosperms to the ironstone outcrops flora in the Urucum Plateau. Among these, 27 species had no occurrence record for Mato Grosso do Sul and three species had not yet been recorded for Brazil. The high diversity and presence of endemic, rare, endangered and/or not yet cataloged species for the Urucum Plateau region, reinforces the need for local conservation units that can guarantee the preservation of these species, since the existing environmental protection areas are insufficient to guarantee the maintenance of typical species from this habitat in the region.

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Dubos-Raoul, Marine. « L’expansion du secteur sucro-énergétique en territoires indigènes dans le sud du Mato Grosso do Sul-Brésil. » Confins, n^o 41 (8 août 2019). http://dx.doi.org/10.4000/confins.22192.

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« Peter Fleming, Un aventurier au Brésil : au fond du Mato Grosso sur les traces du colonel Fawcett ». VertigO, 1 avril 2000. http://dx.doi.org/10.4000/vertigo.5283.

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Ferreira-Silva, Eliane, et Edson de Souza Lima. « Termite predation by the hoary fox, Pseudalopex vetulus (Lund) (Carnivora, Canidae), in a pasture in Mato Grosso, Central Brazil / Prédation des termites par le renard du Brésil, Pseudalopes vetulus (Lund) (Carnivora, Canidae), dans les pâtures du Mato Grosso en province centrale du Brésil ». mammalia 70, n^o 3/4 (janvier 2006). http://dx.doi.org/10.1515/mamm.2006.043.

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Silva, Anderson Walter Costa, Arthur Arantes Cunha, Giovana Carvalho Alves, Rodolfo Antônio Corona, Claudio Alberto Gellis de Mattos Dias, Reza Nassiri, Silvana Vedovelli et al. « Profil épidémiologique et déterminant social du COVID-19 à Macapá, Amapá, Amazone, Brésil ». Revista Científica Multidisciplinar Núcleo do Conhecimento, 13 avril 2020, 05–27. http://dx.doi.org/10.32749/nucleodoconhecimento.com.br/sante/covid-19-a-macapa.

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Fin décembre 2019, à Wuhan, en Chine, une nouvelle variété de coronavirus est apparue, étant déclarée urgence de santé publique mondiale par l’Organisation mondiale de la santé (OMS). Le tropisme des voies respiratoires peut être dû à l’expression de l’enzyme angiotensine-convertisseur 2 (ACE2). Dans la région de l’Amazonie juridique brésilienne, jusqu’au 22 mars 2020, l’État d’Amazonas a présenté 26 cas confirmés; Acre 11 caisses; Para 04; Rondonia 03; Roraima, Tocantins, Maranhão et Mato Grosso 02 cas; et Amapá seulement 01 si elle est confirmée. Cette étude vise à quantifier et à analyser les premiers cas suspects et confirmés de COVID-19 à Macapá, Amapá, Amazon, Brésil. Il s’agit d’une étude observationnelle, rétrospective et quantitative, faisant référence au profil des 108 premiers cas suspects signalés à Macapá, entre le 13 mars 2020 et le 21 mars 2020, et aux calculs de l’incidence du COVID-19 dans les 26 capitales brésiliennes et brasília, district fédéral, entre le 26 février 2020 et le 26 mars 2020. Les études peuvent révéler un modèle spécifique de propagation du virus, ce qui contribuerait à la planification et à la mise en œuvre de mesures épidémiologiques de contrôle et de surveillance plus efficaces.

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Oka-Fiori, Chisato, Alberto Pio Fiori et Yociteru Hasui. « TOLERÂNCIA DE PERDAS DE SOLO NA BACIA DO RIO ITIQUIRA, MATO GROSSO, BRASIL ». Boletim Paranaense de Geociências 54 (30 juin 2004). http://dx.doi.org/10.5380/geo.v54i0.4254.

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Com a finalidade de avaliar a dinâmica ambiental no ecossistema da bacia de Itiquira e identificar área com problemas especiais, notadamente no que diz respeito à inadequada utilização do solo, realizou-se a análise da erosão laminar na bacia do rio Itiquira, na porção que se estende dos afluentes da sua cabeceira, no leste da chapada Correntes / Itiquira, até a escarpa da serra de São Jerônimo, num total de 5.361 km2. A erosão laminar foi avaliada pelo emprego da Equação Universal de Perdas de Solo (EUPS) para os anos de 1966, 1985 e 1996. Como conseqüência do rápido processo de ocupação antrópica, acelerou-se o processo de erosão do solo. Em 1966 havia uma perda média de 0,37 t/ha.ano, valor que passa a 3,28 t/ha.ano em 1985 e para 3,10 t/ha.ano em 1996. No período de 1985 a 1996 houve pequena desaceleração do processo erosivo em correspondência a um aumento nas áreas de pastagem. Escassos dados de hidrossedimentologia mostram a produção de sedimentos do rio Itiquira entre 1,39 a 2,04 t/ha.ano para o ano de 1988, em boa concordância com os resultados da EUPS. Visando identificar as áreas de risco potencial de erosão foi elaborado o mapa de limite de tolerância às perdas de solo. Em 1966, áreas com perdas de solo acima do tolerável ocupavam 0,43% do total da área, passando para 5,86% em 1985 e para 5,43% em 1996. Todas as áreas com perdas acima do valor tolerável devem ser consideradas como em processo de degradação do solo e necessitam da implementação de práticas conservacionistas. TOLERANCE OF SOIL LOSSES IN THE ITIQUIRA RIVER BASIN, STATE OF MATO GROSSO, BRAZIL Abstract The geographic area of the present study corresponds to the basin of the Itiquira river high course (Figure 1), in the portion that extends from the tributaries of its source, in the east of the plateau Correntes/ Itiquira, in the neighbourhoods the city of Alto Garças, to the scarp of the São Jerônimo mountain range, toward the west of Itiquira, in the state of Mato Grosso, totalizing 5,361 km2. The area is placed in the eastern part of the Alto Paraguai basin, in the western portion of the Paraná Sedimentary Basin plateau. Through GIS techniques, it was possible to asses total soil losses from the Itiquira river basin, considering the years of 1966, 1985 and 1996, being based on the Universal Soil Loss Equation. Thus, in 1966 the basin lost 201,546.94 ton of soil, with an average loss of 0.37 ton/ha/year. Considering that the total area of the Itiquira river basin is of 536,100 ha, while in 1985 the soil losses had passed to 1,760,833.40 ton, with an increase of approximately 8.5 times. The average of soil losses in 1985 was of 3.28 ton/ha/year. In 1996 the basin lost 1,662,043.24 ton, with a reduction of only 9.4% in relation to 1985 but, in relation the 1966, the increase continued in the order of 8 times. The average losses per hectare in this year was in the order of 3.10 ton/ha/year (Chart 1). The map of potential of the laminar erosion for 1966 (Figure 3), shows to the highest values in small areas, situated in the northeast of the area, in Alto Garças, with values between 10 the 20 ton/ha/year and some spots in sources of the Itiquira and Ariranha rivers, with values between 1 the 5 ton/ha/year. In a general way, however, the area presents low soil loss for laminar erosion in this year, with inferior values to 1 ton/ha/year. The higher class of erosion, over 10 ton/ ha/year, occupied 2,947 ha in 1966. In the year of 1985 (Figure 4), the erosive process spread over the entire studied area, and the class of erosion over of 10 ton/ha/year, already started to occupy 78,437 ha, implying an increase of approximately 27 times in 19 years. A strong increment in the erosive process was noticed in the western part of the area, to along the BR-163 road, exactly where great areas of natural vegetation (open pasture) had been transformed in culture and pasture areas. In the north-eastern part of the area was also noticed an increment in the erosive process in agreement with the increase of culture areas and reduction of the natural areas, but it was not of so intense form as in the western portion of the area. In the year of 1996 (Figure 5), the class of erosion over of 10 ton/ha/year had diminished for a total of 53.499 ha noticing a retraction of the erosive process in the western part of the area, alongside the BR-163 road. On the other hand, it occurred a strong increment in the northern part of the area, in the neighbourhoods of the city of Alto Garças, alongside the BR-364 road and part of the MT-040 road. In a general way, in the outskirts of the city of Itiquira, in the central part of the area, it was verified an increase of the amount of zones with erosion between 0-1 ton/ha/year, passing to the immediately superior class, of 1-3 ton/ha/year ; scarce data of hydrosedimentology in the UHE Itiquira (1999), shows good agreement with the values gotten for the EUPS (Chart 2). Based on the hydric classification proposal for FAO (1967) (Chart 3), it is noticed that areas with high degree of erosion (> 50) in the analysed area are very restricted, occupying 493 ha in 1985 and 332 ha in 1996 (Chart 4). In 1996 appeared as isolated spots in the north of Itiquira and Alto Garças, however beyond limits of the Itiquira river basin. These areas require special cares in its use as agricultural areas. Aiming at identifying and indicating the areas of potential risk of erosion and that need implementation of conservation practices, it was elaborated the map of limit of tolerance to the soil losses. In 1966 (Figure 6), areas with soil losses over of the tolerable were restricted to small spots located in the eastern part of the area, occupying 0.43% of the total of the area; already in 1985 (Figure 7), this percentage passed to 5.86%, spreading for all the area; in 1996 (Figure 8) it is observed a fast reduction of the areas with soil losses over of the tolerance limit, passing 5.43% of the total of the area. All the areas with losses over of the tolerable value must be considered as risk areas and were done in these areas studies for implementation of conservation practices.

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Torres, Carine Correa, Franciolli da Silva Dantas Araújo, Amanda Alves Fecury, Euzébio Oliveira, Carla Viana Dendasck et Claudio Alberto Gellis de Mattos Dias. « Réserve, production, marché et consommation de manganèse brésilien entre 2010 et 2013 ». Revista Científica Multidisciplinar Núcleo do Conhecimento, 26 septembre 2018, 63–73. http://dx.doi.org/10.32749/nucleodoconhecimento.com.br/quimica-fr/manganese.

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Habituellement trouvé à l’état solide, le manganèse (Mn) est une substance métallique, est l’un des éléments les plus abondants de la croûte terrestre, étant associé à d’autres éléments, formant divers types de minéraux, mais il ya peu qui composent les minéraux du minerai de manganèse. L’extraction, ou l’extraction, du minerai de manganèse peut être effectuée par la méthode à ciel ouvert à l’aide d’excavatrices mécaniques, rippesr, draglines, ou d’autres équipements, sans l’utilisation d’explosifs. Les réserves examinées dans l’article se réfèrent aux réserves lavables officiellement approuvées par le Département national de la production minérale, sans tenir compte de celles qui sont sous licence, extraction et autorisation d’exploitation minière. La recherche a été réalisée dans des résumés minéraux publiés par le Département national de la production minérale – DNPM, les données ont été prises à partir des résumés et compilées dans le programme Excel de l’ensemble Office de Microsoft Corporatoion, pour une analyse plus approfondie. Des articles scientifiques des bases de données Google Scholar, Scielo et Periodicos Capes ont été utilisés. On a observé que la production de manganèse est étroitement liée au marché de consommation, diminuant ou augmentant en fonction de ses besoins. Ce qui peut influencer le maintien du Brésil dans une position privilégiée parmi les principaux producteurs de manganèse dans le monde, ce sont ses réserves. Étant donné qu’il s’existe de réserves importantes et à forte teneur au Brésil, l’exploitation du minerai de manganèse devient économiquement viable, augmentant la production, compte tenu de la demande du marché de consommation national et étranger. Les États qui détiennent la majorité de la production sont Pará (70%), Minas Gerais (15%) et Mato Grosso do Sul (14,6%). Compte tenu des résultats présentés, il est entendu que le Brésil a suffisamment de potentiel pour être dans une position plus avantageuse parmi les principaux producteurs de manganèse dans le monde, en raison des réserves qu’il possède. Bien qu’il dispose de quantités considérables, le Brésil doit encore investir dans la recherche qui indique de nouvelles réserves à exploiter, afin que la production brésilienne réponde à la demande croissante du marché de consommation, en particulier lorsqu’il se réfère à l’exportation de ses produits, puisque son augmentation offre des avantages au pays.

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