Amazonian History
Mostrando 1-12 de 31 artigos, teses e dissertações.
-
1. White sand vegetation in an Amazonian lowland under the perspective of a young geological history
Abstract: What controls the formation of patchy substrates of white sand vegetation in the Amazonian lowlands is still unclear. This research integrated the geological history and plant inventories of a white sand vegetation patch confined to one large fan-shaped sandy substrate of northern Amazonia, which is related to a megafan environment. We examined flo
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
-
2. Diversity and evolution of Amazonian birds: implications for conservation and biogeography
Abstract: Amazonia has been a focus of interest since the early days of biogeography as an intrinsically complex and extremely diverse region. This region comprises an intricate mosaic that includes diverse types of forest formations, flooded environments and open vegetation. Increased knowledge about the distribution of species in Amazonia has led to the re
An. Acad. Bras. Ciênc.. Publicado em: 08/08/2019
-
3. Historical biogeography of fishes from coastal basins of Maranhão State, northeastern Brazil
RESUMO A ictiofauna da Amazônia é uma das mais diversificadas do mundo, mas os peixes das bacias costeiras adjacentes do estado do Maranhão, no Nordeste do Brasil, ainda são pouco conhecidos. Utilizamos métodos filogeográficos, filogenia de comunidade e de diversidade beta filogenética para estudar a história biogeográfica de peixes das bacias coste
Neotrop. ichthyol.. Publicado em: 19/06/2019
-
4. Fishes of the Amazon: diversity and beyond
Abstract: The Amazon basin houses a particular group of freshwater organisms, whose study tells the geological history of the region, how biological diversity was shaped, how it is maintained, and what it hides. The fish of the Amazon is represented by more than 3,000 known species distributed from the basal groups up to the more specialized ones. This speci
An. Acad. Bras. Ciênc.. Publicado em: 03/06/2019
-
5. Mercury exposure of children living in Amazonian villages: influence of geographical location where they lived during prenatal and postnatal development
Abstract: Introduction: In some Amazonian river basins, hair mercury concentration is above the recommended levels. We evaluated the influence of birth geographical location in the hair mercury level of Amazonian riverine children. Materials and Methods: Hair mercury concentration was measured in 219 children living in four Amazonian riverine communities: Ta
An. Acad. Bras. Ciênc.. Publicado em: 18/04/2019
-
6. Santarém: o ponto de partida para o (ou de retorno) urbano utopia
Resumo Este artigo discute o progressivo descolamento observado entre cidade, urbano, rural e natureza em contexto amazônico. Partiu-se da geo-história, abordagem lefebvriana de análise da formação espacial, do sítio de Santarém (PA) e adjacências, para explicitar a natureza híbrida de um tecido urbano extensivo, formado por tipologias urbanas desc
urbe, Rev. Bras. Gest. Urbana. Publicado em: 21/01/2019
-
7. A history of the biogeography of Amazonian fishes
RESUMO A história do conhecimento da biogeografia amazônica é tão rica quanto sua comunidade de peixes e um tema fascinante de estudo em si. Vários paradigmas e controvérsias atuais sobre a biogeografia de peixes amazônicos estão enraizados em princípios que datam da segunda metade do século 18 até a primeira metade do século 19. O presente traba
Neotrop. ichthyol.. Publicado em: 11/10/2018
-
8. Pedogenesis in an Archaeological Dark Earth – Mulatto Earth Catena over Volcanic Rocks in Western Amazonia, Brazil
ABSTRACT Archaeological Dark Earth (ADE) pedogenesis and pre-Columbian history are fundamental for understanding the biodiversity and pedodiversity of the Neotropical rainforest in the Amazon region. This study aimed to evaluate the morphological, physical, chemical, and mineralogical properties as well as NaOH-extractable organic matter [OM(NaOH)] in ADE an
Rev. Bras. Ciênc. Solo. Publicado em: 06/08/2018
-
9. Snake assemblages of Marajó Island, Pará state, Brazil
ABSTRACT We describe the diversity, natural history and structure of snake assemblages from Marajó Island, state of Pará, Brazil, after analyzing 439 specimens deposited in herpetological collections. We tested the hypothesis that snake assemblages from forest and open areas of Marajó Island are distinct with regard to their structure, composition and fun
Zoologia (Curitiba). Publicado em: 11/03/2016
-
10. Can sibling species of the Drosophila willistoni subgroup be recognized through combined microscopy techniques?
ABSTRACT In several arthropod groups, male genitalia is the most important feature for species identification, especially in cryptic species. Cryptic species are very common in the Drosophila genus, and the Neotropical Drosophila willistoni species group is a good example. This group currently includes 24 species divided into three subgroups: alagitans, boca
Rev. Bras. entomol.. Publicado em: 2015-12
-
11. Richness of Marchantiophyta and Bryophyta in a protected area of the Brazilian Amazon
The bryophytes of Gurupi Biological Reserve represent an important component of the biodiversity of the Amazon in the Brazilian state of Maranhão. This study aimed to investigate the richness of bryophytes (Marchantiophyta and Bryophyta) from Gurupi Biological Reserve and compare it with that found in other surveys conducted in Maranhão and in the northeas
Acta Bot. Bras.. Publicado em: 2014-12
-
12. Breeding, growth and exploitation of Brachyplatystoma rousseauxii Castelnau, 1855 in the Caqueta River, Colombia
The main life history traits of the large Amazonian migratory catfish Brachyplatystoma rousseauxii were determined in the Caqueta River, Colombia. The breeding season occurred during the rising and falling water periods. The size at first sexual maturity was significantly larger for females (88.5 cm Ls) than males (81.7 cm). Both males and females reproduce
Neotrop. ichthyol.. Publicado em: 2013-09