Publications by authors named "Jonathan G Araya"
Article Synopsis
- The study examines the diversity of bacteria in the atmospheric boundary layer across twelve different global locations, identifying how various biomes influence this diversity.
- It finds that atmospheric bacterial diversity negatively correlates with mean annual precipitation, while it positively correlates with mean annual temperature, and highlights unique community structures for both atmosphere and soil at each site.
- The research emphasizes that local soils play a more significant role than distant soils in shaping atmospheric diversity, especially in semi-arid and arid regions, underscoring the complex interactions in atmospheric microbiota and their impact on ecosystems.
The Atacama Desert of northern Chile is one of the driest regions on Earth, with areas that exclude plants and where soils have extremely low microbial biomass. However, in the driest parts of the desert there are microorganisms that colonize the interior of halite nodules in fossil continental evaporites, where they are sustained by condensation of atmospheric water triggered by the salt substrate. Using a combination of in situ observations of variable chlorophyll fluorescence and controlled laboratory experiments, we show that this endolithic community is capable of carbon fixation both through oxygenic photosynthesis and potentially ammonia oxidation.
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