Igapó Ecosystem Soils: Features and Environmental Importance

Both biotic and abiotic factors are important for maintaining the activity cycles of animals, and may determine the most advantageous periods for eating, moving and sleeping. While the solar day-night cycle is among the most central of abiotic variables, a number of species are active both day and night. Three-toed sloth populations (Bradypus, Linnaeus 1758) across the Neotropics show this pattern, with activity occurring at various points across the 24-hour cycle. In the current study, we used radio tracking techniques to investigate the daily temporal patterning of sloth displacement in Amazonian igapó flooded forest, and compared the results with populations studied in other habitats. We conclude that igapó sloths are cathemeral, and discussed that environmental temperature, nutritional needs and the presence of predators may be the main factors influencing their activity pattern.

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Cathemeral activity by brown-throated three-toed sloths (Bradypus variegatus) in central Amazonian flooded igapó forests

Castro-Sa

Dias-Silva

Barnett

2021

Can. J. Zool.

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A new species of ‘Bird’s Nest’Anthurium sect. Pachyneurium (Araceae) from Brazil

et al. 2021

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While studying Anthurium sect. Pachyneurium from Brazil, a new species Anthurium mayoanum was discovered in Floresta de Igapó from Pará State. The species is described and illustrated. The species presents a set of characteristics that are for sect. Pachyneurium, particularly the atypical base of leaf blade and the color of spadix. We have compared this new species with other related taxa of section Pachyneurium and have provided commentary on geographical distribution, conservation status, ecology and phenology.

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Igapó Ecosystem Soils: Features and Environmental Importance

Cited by 2 publications

References 15 publications

Cathemeral activity by brown-throated three-toed sloths (Bradypus variegatus) in central Amazonian flooded igapó forests

Cathemeral activity by brown-throated three-toed sloths (Bradypus variegatus) in central Amazonian flooded igapó forests

A new species of ‘Bird’s Nest’Anthurium sect. Pachyneurium (Araceae) from Brazil

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