Results 151 to 160 of about 301,465 (293)

Amazonian drought of 2023: Environmental conditions relevant to fishes

open access: yesJournal of Fish Biology, EarlyView.
Abstract This paper provides a platform for the following studies within this Special Issue. ‘Ecophysiology of fishes in the two great tributaries of the Amazon in the Anthropocene’. It documents the water quality conditions and accompanying zooplankton community structure and biomass relative to fish health in the Rio Negro and Rio Solimões during the
Ora E. Johannsson   +10 more
wiley   +1 more source

¿Cultura para consumir? Los yagua y el turismo cultural en el Trapecio Amazónico

open access: yesRevista Colombiana de Antropología, 2011
El turismo en el Amazonas promueve encuentros entre nativos amazónicos y turistas occidentales en los que escenifican su diferencia cultural en términos de polaridades yuxtapuestas, mediadas por transacciones económicas.
Lina Marcela Gallego Acevedo
doaj  

Ethnobotanical study of antimalarial plants in the middle region of the Negro River, Amazonas, Brazil

open access: yes, 2017
The middle Rio Negro region is an interesting place to seek novel antimalarial compounds because of the traditional knowledge of the Amazon population in conjunction with the high biodiversity of the region.
Bernardo Tomchinsky   +4 more
semanticscholar   +1 more source

A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis   +7 more
wiley   +1 more source

CARACTERÍSTICAS DA URBANIZAÇÃO RECENTE NO ESTADO DO AMAZONAS

open access: yesCadernos de Estudos Sociais, 1997
A autora realiza uma exploração dos dados dos Censos Demográficos de 1980 e 1991 no sentido de apreender como evoluíram nesse período, alguns indicadores pertinentes ao processo de urbanização recente ocorrido no Estado do Amazonas.
Taís E Santos
doaj  

Notes on Neotropical Veliidae (Hemiptera). IX: additional new species of Paravelia from South America

open access: yes, 1984
Four new species of Paravelia are described: P. dilatata from Surinam and Brazil; P. foveata, P. cupariana and P.
Polhemus , D., Polhemus, J.
core  

Flavobacterium oreochromis From Farmed Tambaqui (Colossoma macropomum): Insights Into Genetic, Phenotypic and Pathogenic Diversity

open access: yesJournal of Fish Diseases, EarlyView.
ABSTRACT Flavobacterium spp. are the etiological agents of columnaris disease. Although there is evidence that columnaris poses a significant threat to the farming of tambaqui (Colossoma macropomum), there remains a large gap in understanding the genetic and phenotypic diversities of columnaris‐causing bacteria (CCB).
Elcimara Cardoso Pereira   +8 more
wiley   +1 more source

Sedimentological studies of the "Ilha de Marchantaria" in the Solimões/Amazon River near Manaus

open access: yes, 1983
Sedimentological studies on the Ilha de Marchantaria an island in the Amazon river near Manaus reveal the existence of four different structural main units.
Adis, J.   +3 more
core  

Fit for purpose? Analysis of the relationship between skull, beak shape and feeding ecology in Psittaciformes

open access: yesJournal of Anatomy, EarlyView.
Psittaciformes exhibit high levels of morphological diversity, particularly in skull and beak structure, previously linked to diet and body size. Although there were some levels of significance between diet and beak shape, body mass was a much stronger co‐variate. Diet is not determining beak shape within the clade.
Shannon L. Harrison   +2 more
wiley   +1 more source

…Soñar, recordar y vivir con eso

open access: yesEstudios Atacameños
Esta contribución, más que todo etnográfica, representa un aporte de nuevos datos originales sobre la construcción de la memoria a partir del caso zápara.
Anne-Gaël Bilhaut
doaj   +1 more source

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