Aves, Apodiformes, Trochilidae, Topaza pella (Linnaeus, 1758): a range reinforcement in Amazonian Brazil by Bradley Davis, Scott Olmstead

“…The two new localities presented for the species elucidate its range in southern Pará and northern Mato Grosso states, and in consideration of recent records elsewhere south of the Amazon River, suggest that the species is widely distributed across suitable habitat throughout the Brazilian Amazon.…”
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Número de vértebras de characiformes do rio Amazonas e seu uso na identificação de larvas do grupo by Carlos A. R. M. Araujo-Lima, Enila Donald

“…We present here vertebrae counts and estimations of the number of myomeres for 29 species of Characiformes which have their reproduction linked to the Amazon river. We also analyse the potencial of vertebrae counts for the identification of the larvae.…”
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Pisces, Siluriformes, Doradidae, <i>Astrodoras</i> Bleeker, 1862: First record in the Colombian Amazon. by Roa-Fuentes, C. A., Alonso, J. C., Perez, M. S., Alfonso, A.

“…The single species described for the genus is A. asterifrons (Kner, 1853),reported only from the Amazon River basin in Brazil and Bolivia. The Colombian specimens are characterized by a gas(swim) bladder that is different from that of A. asterifrons, indicating that they represent a distinct and undescribed speciesof Astrodoras.…”
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Diverse Early Life-History Strategies in Migratory Amazonian Catfish: Implications for Conservation and Management. by Jens C Hegg, Tommaso Giarrizzo, Brian P Kennedy

“…We collected fish from the mouth of the Amazon River and the Central Amazon and used strontium isotope signatures ((87)Sr/(86)Sr) recorded in their otoliths to determine the location of early rearing and subsequent. …”
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Cytogenetic and molecular characteristics of Potamotrygon motoro and Potamotrygon sp. (Chondrichthyes, Myliobatiformes, Potamotrygonidae) from the Amazon basin: Implications for th... by Vanessa Paes da Cruz, Maria Ligia Oliveira Nobile, Fabilene Gomes Paim, Aisni Mayumi Correia de Lima Adachi, Giovana da Silva Ribeiro, Daniela Cristina Ferreira, José Carlos Pansonato-Alves, Patrícia Charvet, Claudio Oliveira, Fausto Foresti

“…Abstract The chromosomes of two freshwater stingrays, Potamotrygon motoro and Potamotrygon sp., from the Amazon River basin in Brazil were investigated using integrated molecular (cytochrome c oxidase subunit 1) and cytogenetic analyses. …”
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Exploring malaria vector diversity on the Amazon Frontier by Brian P. Bourke, Jan E. Conn, Tatiane M. P. de Oliveira, Leonardo S. M. Chaves, Eduardo S. Bergo, Gabriel Z. Laporta, Maria A. M. Sallum

“…The findings will help shape future studies of vector incrimination and transmission dynamics in these areas and support efforts to develop more effective vector control and transmission reduction strategies in settler communities in the Amazon River basin.…”
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Spatio-temporal spillover risk of yellow fever in Brazil by RajReni B. Kaul, Michelle V. Evans, Courtney C. Murdock, John M. Drake

“…Yellow fever (YF) re-emerged in the early 2000s, spreading from the Amazon River basin towards the previously considered low-risk, southeastern region of the country. …”
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Implications of a Large River Discharge on the Dynamics of a Tide-Dominated Amazonian Estuary by Ariane M. M. Silva, Hannah E. Glover, Mariah E. Josten, Vando J. C. Gomes, Andrea S. Ogston, Nils E. Asp

“…Estuaries along the Amazonian coast are subjected to both a macrotidal regime and seasonally high fluvial discharge, both of which generate complex circulation. Furthermore, the Amazon River Plume (ARP) influences coastal circulation and suspended sediment concentrations (SSCs). …”
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Primer registro de la raya látigo o antena <em>Plesiotrygon iwamae<em> Rosa, Castello y Thorson 1987 (Chondrichthyes: Potamotrygonidae) para Colombia by Carlos A. Lasso, Astrid Acosta Santos, Edwin Agudelo Córdoba

“…The presence of the Plesiotrygon iwamae (Chondrichthyes: Potamotrygonidae) in Colombia is confirmed, based on a male specimen collected in the Amazon River and must be alert about their conservation status in the Amazon region.…”
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Geographic distribution of Hemigrammus ora (Ostariophysi: Characiformes: Characidae) in the Amazon basin, Brazil by Fernando C Jerep, Fernando R Carvalho, Vinicius A Bertaco

“…The species is reported from the Tocantins-Araguaia system and lower Amazon River. Morphometric and meristic data, previously undescribed morphological traits related to caudal-fin squamation and anal-fin hooks, and geographic variation are presented for the species.…”
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Genetic Connectivity of the West Indian Manatee in the Southern Range and Limited Evidence of Hybridization With Amazonian Manatees by Fábia de Oliveira Luna, Caitlin E. Beaver, Coralie Nourisson, Coralie Nourisson, Robert K. Bonde, Fernanda L. N. Attademo, Adriana Vieira Miranda, Juan Pablo Torres-Florez, Glaucia Pereira de Sousa, José Zanon Passavante, Margaret E. Hunter

“…The nuclear loci in Venezuela/Guyana Antillean manatee samples indicated high differentiation from the samples collected in the Amazon River (FST = 0.35 and RST = 0.18, p = 0.0001). …”
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Wintertime process study of the North Brazil Current rings reveals the region as a larger sink for CO₂ than expected by L. Olivier, J. Boutin, G. Reverdin, N. Lefèvre, P. Landschützer, S. Speich, J. Karstensen, M. Labaste, C. Noisel, M. Ritschel, T. Steinhoff, R. Wanninkhof

“…The rings are formed to the north of the Amazon River mouth when freshwater discharge is still significant in winter (a time period of relatively low run-off). …”
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New records of fishes (Actinopterygii: Ostariophysi) from the Upper Tapajós River Basin by Fernando Dagosta, Murilo Pastana, André Esguícero

“…Tatia intermedia is registered in the upper reaches of the Araguaia, Tocantins, Xingu, and Capim rivers, tributaries of the lower Amazon River in Brazil, northwards to the Suriname coastal rivers and the Essequibo River in Guyana.…”
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EXPLORERS, MISSIONARIES, SCIENTISTS AND THE OPENING OF THE AMAZON by Bruno Gonçalves Rosi

“…With a starting point on historical analysis already carried out and consultation on primary sources, this article aims to narrate the story of the opening of the Amazon River to international trade and navigation. The hypothesis here explored is that to a significant extent, this process occurred under the influence of transnational actors, capable of promoting the adoption of a policy until then largely rejected by the Brazilian statesmen. …”
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A new species of Acestridium Haseman, 1911 (Loricariidae: Hypoptopomatinae) from the Eastern Amazon basin, Brazil by Mónica S. Rodriguez, Roberto E. Reis

“…Acestridium triplax, new species, is described from the Amazon River basin in Pará State, Brazil. The new species can be distinguished from all its congeners by having one series of middle abdominal plates between the lateral abdominal plates (vs no abdominal plates between the lateral abdominal plates).…”
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Manipulus Rubiacearum - V. A revision of the genus Capirona. by Joseph H. Kirkbride, Jr.

“…The zone of contact between the two species is along the southern edge oh the Amazon River and the lower drainage of the Rio Tapajoz in Pará, Brazil.…”
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The Atmospheric Branch of the Hydrological Cycle over the Negro and Madeira River Basins in the Amazon Region by Rogert Sorí, José A. Marengo, Raquel Nieto, Anita Drumond, Luis Gimeno

“…In the present study, we identified the main sources of moisture of two subbasins of the Amazon River Basin, the Negro and Madeira River Basins respectively. …”
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Comparative biology of two populations of Lutzomyia umbratilis (Diptera: Psychodidae) of Central Amazonia, Brazil, under laboratory conditions by S. C. B. Justiniano, A. C. Chagas, F. A. C. Pessoa, R. G. Queiroz

“…However, populations of this sand fly species are also present in areas south of the Amazon river system, which may act as a geographical barrier to the Leishmania guyanensis cycle. …”
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Population history, phylogeography, and conservation genetics of the last Neotropical mega-herbivore, the lowland tapir (<it>Tapirus terrestris</it>) by de Thoisy Benoit, da Silva Anders, Ruiz-García Manuel, Tapia Andrés, Ramirez Oswaldo, Arana Margarita, Quse Viviana, Paz-y-Miño César, Tobler Mathias, Pedraza Carlos, Lavergne Anne

“…Climatic events at the end of the Pleistocene, parapatric speciation, divergence along the Andean foothill, and role of the Amazon river, have similarly shaped the history of other taxa. …”
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Novel analytical strategies for tracing the organic carbon cycle in marine and riverine particles by Rosengard, Sarah Zhou

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