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Microbial diversity and patterns at global scale from TARA Oceans: how far we are?

AutorAcinas, Silvia G. ; Salazar, Guillem
Fecha de publicación17-nov-2014
Citación2nd International Ocean Research Conference (2014)
ResumenProkaryotes are a relevant component of the ocean’s food networks; they are responsible for 30% of the primary biomass production and 95% of the respiration of the ocean accounting with 1029 cells in the global ocean. Microbial diversity and patterns at global scale is still poorly known but this knowledge is essential to understand carbon flow in the ocean. A lack of systematic sampling exists for both photic and aphotic ocean layers covering the main world’s oceans. Thus, little is know about the comparison of microbial communities in both vertical and horizontal gradients in the ocean. In the context of TARA Oceans expedition, we have analyzed the prokaryotic diversity and patterns at global scale using alternative approaches based on new sequencing technologies. We also present the first worldwide study comparing prokaryotes and picoeukaryotes under a unified approach. A total of 1.3 x 107 16S/18 rDNA sequences from Illumina metagenomes (miTags; about 100,000 miTags per sample) covering two size fractions (0.2-1.6 and 0.2-3µm) retrieved from more than 60 Tara-Oceans stations across main photic and mesopelagic allowed us to unveil global biodiversity patterns at a cross-domain level. Our findings on microbial diversity and patterns would be relevant for future planktonic ecosystem modeling predictions
Descripción2nd International Ocean Research Conference, One planet one ocean, 17-21 November 2014, Barcelona, Spain
Versión del editorhttp://www.iocunesco-oneplanetoneocean.fnob.org/
Aparece en las colecciones: (ICM) Comunicaciones congresos
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