Terrestrial and marine influence on atmospheric bacterial diversity over the north Atlantic and Pacific Oceans

Terrestrial and marine influence on atmospheric bacterial diversity over the north Atlantic and Pacific Oceans

Abstract The diversity of microbes and their transmission between ocean and atmosphere are poorly understood despite the implications for microbial global dispersion and biogeochemical processes. Here, we survey the genetic diversity of airborne and surface ocean bacterial communities sampled during...

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Bibliographic Details
Published in:Communications earth & environment 2022-05, Vol.3 (1), p.1-10, Article 121
Main Authors: Lang-Yona, Naama, Flores, J. Michel, Haviv, Rotem, Alberti, Adriana, Poulain, Julie, Belser, Caroline, Trainic, Miri, Gat, Daniella, Ruscheweyh, Hans-Joachim, Wincker, Patrick, Sunagawa, Shinichi, Rudich, Yinon, Koren, Ilan, Vardi, Assaf
Format: Article
Language:eng
Subjects:
Atmosphere
Bacteria
Community composition
Composition
Dispersal
Dispersion
Genetic diversity
Life Sciences
Microbial activity
Microorganisms
Oceans
Terrestrial environments
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Summary:Abstract The diversity of microbes and their transmission between ocean and atmosphere are poorly understood despite the implications for microbial global dispersion and biogeochemical processes. Here, we survey the genetic diversity of airborne and surface ocean bacterial communities sampled during springtime transects across the northwest Pacific and subtropical north Atlantic as part of the Tara Pacific Expedition. We find that microbial community composition is more variable in the atmosphere than in the surface ocean. Bacterial communities were more similar between the two surface oceans than between the ocean and the overlying atmosphere. Likewise, Pacific and Atlantic atmospheric microbial communities were more similar to each other than to those in the ocean beneath. Atmospheric community composition over the Atlantic was dominated by terrestrial and specifically, dust-associated bacteria, whereas over the Pacific there was a higher prevalence and differential abundance of marine bacteria. Our findings highlight regional differences in long-range microbial exchange and dispersal between land, ocean, and atmosphere.
ISSN:2662-4435
2662-4435