4.7 Article

Influence of seasonality on the aerosol microbiome of the Amazon rainforest

Journal

SCIENCE OF THE TOTAL ENVIRONMENT
Volume 760, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.scitotenv.2020.144092

Keywords

Bioaerosol; Rainforest; Biodiversity; Bacterial composition; 16S rRNA gene sequencing

Funding

  1. INCT Fixacao Biologica de Nitrogenio
  2. Fundacao Araucaria
  3. FINEP
  4. CAPES
  5. CNPq
  6. German Federal Ministry of Education and Research (BMBF) [01LB1001A, 01LK1602B]
  7. Brazilian Ministerio da Ciencia, Tecnologia e Inovacao (MCTI/FINEP) [01.11.01248.00]
  8. Amazon State University (UEA)
  9. FAPEAM
  10. LBA/INPA
  11. SDS/CEUC/RDS-Uatuma
  12. micrometeorology group of the Large-Scale BiosphereAtmosphere Experiment in Amazonia program

Ask authors/readers for more resources

The Amazon rainforest plays a significant role in primary biological aerosol emissions globally, with aerosols modulating ecosystem dynamics and influencing climate. Seasonal changes in temperature, humidity, and precipitation are primary drivers of compositional changes in the Amazon aerosol microbiome. The diverse aerosol microbiota of the Amazon Rainforest is primarily impacted by seasonal changes in temperature and humidity.
The Amazon rainforest is the world's largest tropical forest, and this biome may be a significant contributor to primary biological aerosol (PBA) emissions on a global scale. These aerosols also play a pivotal role in modulating ecosystem dynamics, dispersing biological material over geographic barriers and influencing climate through radiation absorption, light scattering, or acting as cloud condensation nuclei. Despite their importance, there are limited studies investigating the effect of environmental variables on the bioaerosol composition in the Amazon rainforest. Here we present a 16S rRNA gene-based amplicon sequencing approach to investigate the bacterial microbiome in aerosols of the Amazon rainforest during distinct seasons and at different heights above the ground. Our data revealed that seasonal changes in temperature, relative humidity, and precipitation are the primary drivers of compositional changes in the Amazon rainforest aerosol microbiome. Interestingly, no significant differences were observed in the bacterial community composition of aerosols collected at ground and canopy levels. The core airborne bacterial families present in Amazon aerosol were Enterobacteriaceae, Beijerinckiaceae, Polyangiaceae, Bacillaceae and Ktedonobacteraceae. By correlating the bacterial taxa identified in the aerosol with literature data, we speculate that the phyllosphere may be one possible source of airborne bacteria in the Amazon rainforest. Results of this study indicate that the aerosol microbiota of the Amazon Rainforest are fairly diverse and principally impacted by seasonal changes in temperature and humidity. (C) 2020 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available