Results: 79

Diet of crab-eating fox (Cerdocyon thous) in two conservation units of the Amazon rainforest, Brazil

Braz. j. biol; 84 (), 2024
Abstract The present study aimed to evaluate the diet of the free-living crab-eating fox by identifying the stomach contents of the 17 crab-eating foxes (Cerdocyon thous) roadkilled in two conservation units, both located in the Amazon rainforest. The food items were quantified by frequency of occurrence...

Spatio-temporal variation of seed rain between urban and rural fragments of humid tropical forests

Rev. biol. trop; 71 (1), 2023
Introduction: The type of land use surrounding the remnants of tropical forest may generate changes in the characteristics of plant populations and communities. Consequently, there may be a significant reduction in processes of pollination and diasporas dispersion. Therefore, causing changes in some para...

Completitud de inventarios rápidos de diversidad de mamíferos medianos y grandes en la Amazonía noroccidental colombiana
Completeness of rapid assessments of medium and large mammal diversity in the northwestern Amazon in Colombia

Acta amaz; 51 (3), 2021
Las evaluaciones rápidas de biodiversidad son la fuente de información más común sobre biodiversidad en el noroccidente amazónico en Colombia debido a que los recursos y la logística son limitados. Estas evaluaciones son esenciales para tomar decisiones ambientales en esta área que ha sido impac...

Comparação da fenologia e produção de frutos de camu-camu (Myrciaria dubia) entre uma população natural e uma plantação na Amazôniacentral, Brasil
Phenology and fruit set comparison of camu-camu (Myrciaria dubia) in a natural population and a plantation in the central Amazon, Brazil

Acta amaz; 51 (2), 2021
Myrciaria dubia (Myrtaceae) é um arbusto que produz frutos com altas concentrações de ácido ascórbico (1380 a 1490 mg 100 g-1 na polpa e 2050 mg 100 g-1 na casca), 20 vezes mais que a acerola e 100 vezes mais que o limão. Nativo da região amazônica, ocorre naturalmente em ambientes sazonalmente...

Photosynthesis, growth, and survival in seedlings of four tropical fruit-tree species under intense radiation

Acta amaz; 51 (1), 2021
In the Amazon region, agroforestry systems (AFSs) are recommended as a sustainable production alternative for local communities. A common component in Amazonian AFSs are tropical fruit trees, which can form the canopy or grow in the understory. In this study, we evaluated the effect of high radiation on ...

Aves associadas a clareiras naturais em uma floresta de terras baixas no sudoeste da Amazônia brasileira
Birds associated with treefall gaps in a lowland forest in southwestern Brazilian Amazonia

Acta amaz; 51 (1), 2021
As comunidades naturais são sistemas dinâmicos no tempo e no espaço. A distribuição espacial de plantas e animais coincide com a disponibilidade dos recursos necessários para a sobrevivência e reprodução de cada espécie. Clareiras naturais oferecem vários recursos que influenciam a distribui...

Primeira descrição dos operários de Planicapritermes longilabrum, com notas sobre o ninho de Planicapritermes planiceps (Blattaria: Isoptera: Termitidae)
First description of the worker of Planicapritermes longilabrum with notes on the nest of Planicapritermes planiceps (Blattaria: Isoptera: Termitidae)

Acta amaz; 51 (1), 2021
Planicapritermes Emerson, 1949 é um gênero de cupins da América do Sul com duas espécies nominais: Planicapritermes planiceps (Emerson, 1925) e Planicapritermes longilabrum Constantino, 1998. Os soldados deste gênero são caracterizados por ter mandíbulas fortemente assimétricas. Planicapriterme...

Impact of exposure to smoke from biomass burning in the Amazon rain forest on human health

J. bras. pneumol; 47 (5), 2021
ABSTRACT This review study aimed to determine the relationship between exposure to smoke from biomass burning in the Amazon rain forest and its implications on human health in that region in Brazil. A nonsystematic review was carried out by searching PubMed, Google Scholar, SciELO, and EMBASE databases f...

Niche differentiation mechanisms among canopy frugivores and zoochoric trees in the northeastern extreme of the Amazon

Acta amaz; 50 (3), 2020
Frugivores and zoocoric trees represent an important proportion of tropical rainforest biodiversity. As niche differences favor species coexistence, we aimed to evaluate morphological and temporal niche segregation mechanisms among zoochoric trees and canopy frugivores in a tropical rainforest in the nor...