Composition and ecology of a snake assemblage in an upland forest from Central Amazonia

Vol. 2, 2019 - 104214
Oral
Favoritar este trabalho
Como citar esse trabalho?
Resumo

Most species of Amazonian snakes are distributed throughout the biome. However, local environmental factors influence the formation of assemblages in different localities. In this study, we investigated the composition of the assemblage and the effect of environmental variables on the distribution of the species inhabiting an upland forest in the Experimental Farm area of the Federal University of Amazonas in Manaus, Brazil. Data collection was carried out in 24 standardized plots. Each plot was sampled four times between July 2015 and April 2017 by active search method. We recorded 83 individuals from 29 species belonging to seven families. The richness in the study area corresponded to 78% of the snake species and 100% of the families previously recorded for the Manaus region. As observed in other localities, the most abundant species was the Amazonian lancehead (Bothrops atrox). Multiple linear regression models did not detect any effect of environmental variables on species richness and abundance of individuals. However, quadratic polynomial regression models revealed that intermediate canopy opening percentages positively influence the richness and abundance of snakes. It is possible that the result is related to a tradeoff between the thermoregulation behavior of these animals and to their susceptibility to predation.

Compartilhe suas ideias ou dúvidas com os autores!

Sabia que o maior estímulo no desenvolvimento científico e cultural é a curiosidade? Deixe seus questionamentos ou sugestões para o autor!

Faça login para interagir

Tem uma dúvida ou sugestão? Compartilhe seu feedback com os autores!

Instituições
  • 1 Instituto Nacional de Pesquisas da Amazônia
  • 2 Universidade Nilton Lins
  • 3 Universidade Federal do Amazonas
Eixo Temático
  • 5. Ecologia
Palavras-chave
Community ecology
Manaus
RAPELD
serpentes
Squamata