Biotic Homogenization of the South American Cerrado

Zenni, Rafael Dudeque; Guimarães, Rafaela Araújo; Tidon, Rosana

doi:10.1007/978-3-319-99513-7_16

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…Specialist species might be gradually replaced by generalists of wide distribution or that are adapted to disturbed habitats (Lockwood & McKinney, 2001). Studies conducted in the Cerrado have reported biotic homogenization associated with the conversion of natural areas into pastures and other agricultural uses (Zenni et al, 2018). The history of the landscapes evaluated by the Temporal Vegetation Analysis System (Embrapa Informática Agropecuária, 2020), together with the similarity of the flora composition of the habitats, are indications that the landscapes in the present study may already be going through this process.…”

Section: Discussionmentioning

confidence: 99%

Propagation distance thresholds of woody Cerrado species in a pasture matrix

Issii

Pereira-Silva

Furquim

et al. 2022

Applied Vegetation Science

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Question: Is there a decrease in the richness, structural variables and composition similarity of woody Cerrado species with habitat-matrix distance, potentially influenced by soil compaction and propagule dispersal strategies in the pasture matrix? Location: We studied three landscapes of a pasture matrix in areas of the Cerrado biome in southwestern São Paulo, Brazil. Methods:We sampled 110 plots of 2 m × 2 m in the matrix, stratified in ranges perpendicular to the edge of the habitat, and 10 plots in the forest with no edge effect (60 m from the edge). We undertook soil sampling and collected information about the plants (taxonomy, height, circumference and establishment form by germination or resprouting). We defined habitat distance as the predictor variable for the following response variables: abundance, richness, establishment form, mean height, mean diameter at soil height and dispersal syndrome of the individuals sampled; in addition to the porosity and bulk density of the sampled soil. Results:We found significant differences between habitat and matrix for abundance, richness, mean height and germination number, but non-significant differences for resprouting number and mean diameter at soil height. There was no relationship regarding matrix-habitat distances for structural variables, and habitat species composition was similar only for the first 10 m distance from the habitat edge. Conclusion: Pasture did not prevent plant establishment but might act as an environmental filter. Pasture matrices modify the composition and diversity of the plant community compared with the Cerrado community. Pastures are dominated by resprouting, autochory and grassland species. Regenerating plants from the propagule bank of the matrix showed the potential for natural regeneration of Cerrado areas in pasture as a restoration strategy.

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Section: Discussionmentioning

confidence: 99%

Propagation distance thresholds of woody Cerrado species in a pasture matrix

Issii

Pereira-Silva

Furquim

et al. 2022

Applied Vegetation Science

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show abstract

“…There are over 8,500 native terrestrial species, over 7,000 of these being plants; moreover, 44 percent of the plants and 28 percent of the amphibians are endemic, which are unusually high proportions of endemism. In 2016, there were 59 plants and 55 animals found to be close to extinction, with the expectation of further extinctions rapidly expanding if plantation expansion continues (Zenni, Guimarães, and Tidon 2019).…”

Section: Who or What Exists?mentioning

confidence: 99%