Spatial patterns of medium and large size mammal assemblages in várzea and terra firme forests, Central Amazonia, Brazil

PloS One
Guilherme Costa AlvarengaPaulo Estefano D Bobrowiec

Abstract

Várzea forests account for 17% of the Amazon basin and endure an annual inundation that can reach 14 m deep during 6-8 months. This flood pulse in combination with topography directly influences the várzea vegetation cover. Assemblages of several taxa differ significantly between unflooded terra firme and flooded várzea forests, but little is known about the distribution of medium and large sized terrestrial mammals in várzea habitats. Therefore, our goal was to understand how those habitats influence mammalian species distribution during the dry season. Specifically, we: (1) compared the species composition between a terra firme (Amanã Sustainable Development Reserve) and a várzea forest (Mamirauá Sustainable Development Reserve); and (2) tested the influence of the várzea habitat classes on the number of records, occurrence and species composition of mammalian assemblages. The sampling design in each reserve consisted of 50 baited camera trap stations, with an overall sampling effort of 5015 camera trap days. We used Non-Metric Multidimension Scaling (NMDS) to compare species composition between terra firme and várzea forests, and used Generalized Linear Models (GLM) to assess how habitat types and a habitat diversity index a...Continue Reading

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Citations

Oct 3, 2020·Ecology and Evolution·Guta DiribaAddisu Asefa
Jun 18, 2021·PloS One·Jussara Santos DayrellAlbertina Pimentel Lima

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Software Mentioned

Chavascal
Rapid Eye
pscl
vegan
Google Earth
Permutational Multivariate Analysis of Variance ( PERMANOVA
PERMANOVA
R
QGIS
SAM

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