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Amazonian deforestation and soil biodiversity.

André L C Franco1, Bruno W Sobral2, Artur L C Silva3

  • 1Department of Biology, Colorado State University, 200 West Lake Street, 1878 Biology, Fort Collins, CO, 80523, U.S.A.

Conservation Biology : the Journal of the Society for Conservation Biology
|October 12, 2018
PubMed
Summary
This summary is machine-generated.

Deforestation in the Amazon significantly harms soil biodiversity, with 60% of soil macrofauna and 51% of microbial communities showing negative responses. Pastures impact macrofauna more than agriculture, while microbes are more affected by acidic soils.

Keywords:
cambio de uso de suelofauna del sueloland-use changemeta-analysismeta-análisismicroorganismosmicroorganismsrainforestselvasoil fauna土地利用变化, 土壤动物群, 微生物, 荟萃分析, 雨林

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Area of Science:

  • Ecology
  • Environmental Science
  • Conservation Biology

Background:

  • Amazonian deforestation poses a major threat to tropical biodiversity.
  • Understanding soil community responses to deforestation is vital for conservation policy.
  • Essential ecosystem services provided by soil communities are at risk.

Purpose of the Study:

  • To assess the impact of deforestation and land-use conversion on Amazonian soil biodiversity.
  • To analyze soil macrofauna and microbial community responses to forest loss.
  • To identify factors influencing the vulnerability of soil biodiversity to land-use change.

Main Methods:

  • A meta-analysis of 274 pairwise comparisons was conducted.
  • Data included soil biodiversity in primary forests versus disturbed and converted sites (pastures, croplands).
  • Attributes analyzed included abundance, biomass, richness, and diversity indexes for soil fauna and microbes.

Main Results:

  • Overall, 60% of soil macrofauna and 51% of microbial attributes showed negative responses to deforestation.
  • Macrofauna were more vulnerable to forest displacement by pastures than agriculture.
  • Microbial communities showed the opposite trend, with greater negative impacts from agricultural conversion.

Conclusions:

  • Deforestation and land-use change in the Amazon have significant detrimental effects on soil biodiversity.
  • Environmental factors like high precipitation and soil acidity exacerbate biodiversity loss.
  • Further research is needed on mesofauna, microfauna, and within-forest disturbances to fully understand impacts.