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Title: Disentangling marine microbial networks across space
Authors: Deutschmann, Ina Maria
Delage, Erwan
Giner, Caterina R.
Sebastián Caumel, Marta 
Poulain, Julie
Arístegui Ruiz, Javier 
Duarte, Carlos M.
Acinas, Silvia G.
Massana, Ramon
Gasol, Josep M.
Eveillard, Damien
Chaffron, Samuel
Logares, Ramiro
UNESCO Clasification: 251001 Oceanografía biológica
Issue Date: 2021
Project: Expedición de circunnavegación MALASPINA 2010: Cambio global y exploración del océano global 
Zonas de Mezcla y Frentes en El Océano Oscuro Como ¿Hot-Spots? de Biodiversidad y Flujos Biogeoquímicos A Través Del Mar Mediterráneo y Atlántico Nordeste - I. 
MicroEcoSystems (240904, RCN, Norway)
MINIME (PID2019-105775RB-I00, AEI, Spain)
AtlantECO (award number 862923)
Marie Skłodowska-Curie grant agreement no. 675752
Journal: bioRxiv 
Abstract: Although microbial interactions underpin ocean ecosystem functions, they remain barely known. Different studies have analyzed microbial interactions using static association networks based on omics-data. However, microbial associations are dynamic and can change across physicochemical gradients and spatial scales, which needs to be considered to understand the ocean ecosystem better. We explored associations between archaea, bacteria, and picoeukaryotes along the water column from the surface to the deep ocean across the northern subtropical to the southern temperate ocean and the Mediterranean Sea by defining sample-specific subnetworks. Quantifying spatial association recurrence, we found the lowest fraction of global associations in the bathypelagic zone, while associations endemic of certain regions increased with depth. Overall, our results highlight the need to study the dynamic nature of plankton networks and our approach represents a step forward towards a better comprehension of the biogeography of microbial interactions across ocean regions and depth layers.
ISSN: 2692-8205
DOI: 10.1101/2021.07.12.451729
Source: bioRxiv [ISSN 2692-8205], 12 julio 2021
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