N. S. Agawin, C. M. Duarte, and S. Agusti, Nutrient and temperature control of the 678 contribution of picoplankton to phytoplankton biomass and production, Oceanogr, vol.45, pp.679-591, 2000.

N. A. Ahlgren and G. Rocap, Culture isolation and culture-independent clone libraries 681 reveal new marine Synechococcus ecotypes with distinctive light and N physiologies, 2006.

N. A. Ahlgren and G. Rocap, Diversity and distribution of marine Synechococcus, p.684, 2012.

N. A. Ahlgren, A. Noble, A. P. Patton, K. Roache-johnson, L. Jackson et al., The unique trace metal and mixed layer conditions of the Costa Rica upwelling 688 dome support a distinct and dense community of Synechococcus, Limnol Oceanogr, vol.687, issue.59, pp.689-2166, 2014.

L. Campbell and R. Iturriaga, Identification of Synechococcus spp. in the Sargasso 693, 1988.

F. Chen, K. Wang, J. Kan, M. T. Suzuki, and K. E. Wommack, Diverse and Unique Picocyanobacteria in Chesapeake Bay, Revealed by 16S-23S rRNA Internal Transcribed Spacer Sequences, Applied and Environmental Microbiology, vol.72, issue.3, pp.2239-2243, 2006.
DOI : 10.1128/AEM.72.3.2239-2243.2006

D. H. Choi and J. H. Noh, Phylogenetic diversity of Synechococcus strains isolated from the East China Sea and the East Sea, FEMS Microbiology Ecology, vol.69, issue.3, pp.439-448, 2009.
DOI : 10.1111/j.1574-6941.2009.00729.x

C. Chung, C. Huang, G. Gong, and Y. Lin, Influence of the Changjiang River 704 flood on Synechococcus ecology in the surface waters of the East China Sea, Microb Ecol, vol.705, issue.67, pp.273-285, 2014.

C. Chung, G. Gong, C. Huang, J. Lin, and Y. Lin, Changes in the 707 Synechococcus assemblage composition at the surface of the east China Sea due to 708 flooding of the Changjiang river, Microb Ecol, pp.1-12, 2015.

P. F. Cummins and H. J. Freeland, Variability of the North Pacific Current and its bifurcation, Progress in Oceanography, vol.75, issue.2, pp.253-265, 2007.
DOI : 10.1016/j.pocean.2007.08.006

W. Deng, Y. Wang, Z. Liu, H. Cheng, and Y. Xue, HemI: A Toolkit for Illustrating Heatmaps, PLoS ONE, vol.30, issue.11, p.111988, 2014.
DOI : 10.1371/journal.pone.0111988.t004

A. Dufresne, M. Ostrowski, D. J. Scanlan, L. Garczarek, S. Mazard et al., Unraveling the genomic mosaic of a ubiquitous genus of marine cyanobacteria, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00338634

R. C. Edgar, B. J. Haas, J. C. Clemente, C. Quince, and R. Knight, UCHIME improves sensitivity and speed of chimera detection, Bioinformatics, vol.27, issue.16, pp.2194-2200, 2011.
DOI : 10.1093/bioinformatics/btr381

C. Everroad and W. A. Michelle, COMPARATIVE MOLECULAR EVOLUTION OF NEWLY DISCOVERED PICOCYANOBACTERIAL STRAINS REVEALS A PHYLOGENETICALLY INFORMATIVE VARIABLE REGION OF ??-PHYCOERYTHRIN, Journal of Phycology, vol.19, issue.6, pp.1300-1311, 2006.
DOI : 10.1111/j.1529-8817.2006.00282.x

C. Everroad and A. M. Wood, Phycoerythrin evolution and diversification of spectral 725 phenotype in marine Synechococcus and related picocyanobacteria, Mol Phylogenet Evol, vol.726, issue.64, pp.381-392, 2012.

G. K. Farrant, H. Doré, F. M. Cornejo-castillo, F. Partensky, M. Ratin et al., Delineating ecologically significant taxonomic units from global patterns of 729 marine picocyanobacteria, Proc Natl Acad Sci, vol.728, issue.113, pp.3365-3374, 2016.

N. J. Fuller, D. Marie, F. Partensky, D. Vaulot, A. F. Post et al., Clade-specific 734 16S ribosomal DNA oligonucleotides reveal the predominance of a single marine 735, 2003.

N. J. Fuller, G. A. Tarran, M. Yallop, K. M. Orcutt, and D. J. Scanlan, Molecular analysis of picocyanobacterial community structure along an Arabian Sea transect reveals distinct spatial separation of lineages, Limnology and Oceanography, vol.51, issue.6, pp.2515-2526, 2006.
DOI : 10.4319/lo.2006.51.6.2515

F. Garcia-pichel, J. Belnap, S. Neuer, and F. Schanz, Estimates of global cyanobacterial biomass and its distribution, Algological Studies, vol.109, issue.1, pp.213-227, 2003.
DOI : 10.1127/1864-1318/2003/0109-0213

O. Gascuel, BIONJ: an improved version of the NJ algorithm based on a simple model of sequence data, Molecular Biology and Evolution, vol.14, issue.7, pp.685-695, 1997.
DOI : 10.1093/oxfordjournals.molbev.a025808
URL : https://hal.archives-ouvertes.fr/lirmm-00730410

C. Guo, H. Liu, L. Zheng, S. Song, B. Chen et al., Seasonal and spatial 745 patterns of picophytoplankton growth, grazing and distribution in the East China Sea, Biogeosciences, vol.11, pp.746-1847, 2014.

T. A. Hall, BioEdit: a user-friendly biological sequence alignment editor and analysis 748 program for Windows 95/98/NT, Nucl Acids Symp Ser, vol.41, pp.95-98, 1999.

S. Huang, S. W. Wilhelm, H. R. Harvey, K. Taylor, N. Jiao et al., Novel lineages of Prochlorococcus and Synechococcus in the global oceans, The ISME Journal, vol.10, issue.2, pp.285-297, 2012.
DOI : 10.1038/ismej.2011.106

F. Humily, F. Partensky, C. Six, G. K. Farrant, M. Ratin et al., A gene 762 island with two possible configurations is involved in chromatic acclimation in marine 763, 2013.

K. R. Hunter-cevera, A. F. Post, E. E. Peacock, and H. M. Sosik, Diversity of 768 Synechococcus at the Martha's Vineyard coastal observatory: Insights from culture 769 isolations, clone libraries, and flow cytometry, Microb Ecol, pp.1-14, 2015.

N. Jiao, Y. Yang, N. Hong, Y. Ma, S. Harada et al., Dynamics of 771 autotrophic picoplankton and heterotrophic bacteria in the East China Sea, Cont Shelf Res, vol.772, issue.25, pp.1265-1279, 2005.

. J. Kirk, Light and photosynthesis in aquatic ecosystems, 1994.

S. Kumar, K. Tamura, and M. Nei, MEGA: molecular evolutionary genetics analysis 776 software for microcomputers. Computer applications in the biosciences, CABIOS, vol.10, pp.777-189, 1994.

F. Lantoine and J. Neveux, Spatial and seasonal variations in abundance and spectral 779 characteristics of phycoerythrins in the tropical northeastern Atlantic Ocean, Deep Sea, p.780, 1997.

I. Letunic and P. Bork, Interactive Tree Of Life (iTOL): an online tool for phylogenetic tree display and annotation, Bioinformatics, vol.23, issue.1, pp.127-128, 2007.
DOI : 10.1093/bioinformatics/btl529

Q. Li, L. Legendre, and N. Jiao, Phytoplankton responses to nitrogen and iron limitation in the tropical and subtropical Pacific Ocean, Journal of Plankton Research, vol.37, issue.2, pp.306-319, 2015.
DOI : 10.1093/plankt/fbv008

W. Li, Annual average abundance of heterotrophic bacteria and Synechococcus in surface ocean waters, Limnology and Oceanography, vol.43, issue.7, pp.1746-1753, 1998.
DOI : 10.4319/lo.1998.43.7.1746

H. Liu, H. Jing, T. H. Wong, and B. Chen, Co-occurrence of phycocyanin-and 795 phycoerythrin-rich Synechococcus in subtropical estuarine and coastal waters of Hong 796, 2014.

S. Mazard, M. Ostrowski, F. Partensky, and D. J. Scanlan, Multi-locus sequence analysis, 798 taxonomic resolution and biogeography of marine Synechococcus, Environ Microbiol, vol.14, pp.799-372, 2012.

D. Mella-flores, S. Mazard, F. Humily, F. Partensky, F. Mahé et al., Is the distribution of <i>Prochlorococcus</i> and <i>Synechococcus</i> ecotypes in the Mediterranean Sea affected by global warming?, Biogeosciences, vol.8, issue.9, pp.2785-2804, 2011.
DOI : 10.5194/bg-8-2785-2011-supplement

M. Mühling, N. J. Fuller, P. J. Somerfield, A. F. Post, W. H. Wilson et al., High resolution genetic diversity studies of marine Synechococcus isolates using 805 rpoC1-based restriction fragment length polymorphism, Aquat Microb Ecol, vol.804, issue.45, pp.263-275, 2006.

Y. Nagata and K. Takeshita, Variation of the sea surface temperature distribution across the 807, 1985.

Y. Nosaka, T. Isada, I. Kudo, H. Saito, H. Hattori et al., Light utilization efficiency of phytoplankton in the Western Subarctic Gyre of the North Pacific during summer, Journal of Oceanography, vol.59, issue.1, pp.91-103, 2014.
DOI : 10.1007/s10872-013-0217-1

R. Olson, S. Chisholm, E. Zettler, and E. Armbrust, Analysis of Synechococcus pigment types in the sea using single and dual beam flow cytometry, Deep Sea Research Part A. Oceanographic Research Papers, vol.35, issue.3, pp.425-813, 1988.
DOI : 10.1016/0198-0149(88)90019-2

L. Ong and A. Glazer, Phycoerythrins of marine unicellular cyanobacteria. I. Bilin 815 types and locations and energy transfer pathways in Synechococcus spp, 1991.

F. Partensky, J. Blanchot, F. Lantoine, J. Neveux, and D. Marie, Vertical structure of 818 picophytoplankton at different trophic sites of the tropical northeastern Atlantic Ocean, Deep Sea Res Pt I, vol.819, issue.43, pp.1191-1213, 1996.

F. Partensky, J. Blanchot, and D. Vaulot, Differential distribution and ecology of 821 Prochlorococcus and Synechococcus in oceanic waters: a review, Bull Inst Oceanogr, vol.822, issue.19, pp.457-476, 1999.

S. Penno, D. Lindell, and A. F. Post, Diversity of Synechococcus and Prochlorococcus 824 populations determined from DNA sequences of the N-regulatory gene ntcA, Environ, vol.825, issue.8, pp.1200-1211, 2006.

J. Pittera, F. Humily, M. Thorel, D. Grulois, L. Garczarek et al., Connecting 827 thermal physiology and latitudinal niche partitioning in marine Synechococcus, ISME J, vol.8, pp.828-1221, 2014.

A. F. Post, S. Penno, K. Zandbank, A. Paytan, S. M. Huse et al., Long term 830 seasonal dynamics of Synechococcus population structure in the Gulf of Aqaba, p.831, 2011.

B. Qiu, Kuroshio and Oyashio currents, 2001.

L. Riemann, G. F. Steward, and F. Azam, Dynamics of Bacterial Community Composition and Activity during a Mesocosm Diatom Bloom, Applied and Environmental Microbiology, vol.66, issue.2, pp.578-835, 2000.
DOI : 10.1128/AEM.66.2.578-587.2000

M. A. Saito, G. Rocap, and J. W. Moffett, feature at the Costa Rica upwelling dome, Limnology and Oceanography, vol.50, issue.1, pp.279-290, 2005.
DOI : 10.4319/lo.2005.50.1.0279

K. Sawada and N. Handa, Variability of the path of the Kuroshio ocean current over 839 the past 25,000 years, Nature, vol.392, issue.6676, pp.592-595, 1998.
DOI : 10.1038/33391

D. J. Scanlan, M. Ostrowski, S. Mazard, A. Dufresne, L. Garczarek et al., Ecological Genomics of Marine Picocyanobacteria, Microbiology and Molecular Biology Reviews, vol.73, issue.2, pp.842-249, 2009.
DOI : 10.1128/MMBR.00035-08
URL : https://hal.archives-ouvertes.fr/hal-00406529

R. Schlitzer, Ocean data view Available at https://odv.awi, p.843, 2009.

C. E. Shannon, A mathematical theory of communication, ACM SIGMOBILE Mob, vol.848, 2001.

S. Sudek, R. C. Everroad, A. Gehman, J. M. Smith, C. L. Poirier et al., Cyanobacterial distributions along a physico-chemical gradient in the Northeastern 863, 2015.

V. Tai and B. Palenik, Temporal variation of Synechococcus clades at a coastal Pacific Ocean monitoring site, The ISME Journal, vol.10, issue.8, pp.903-915, 2009.
DOI : 10.1111/j.1462-2920.2007.01246.x

G. Toledo and B. Palenik, Synechococcus diversity in the California current as seen by 867 RNA polymerase (rpoC1) gene sequences of isolated strains, Appl Environ Microbiol, vol.63, pp.868-4298, 1997.

E. Urbach, D. J. Scanlan, D. L. Distel, J. B. Waterbury, and S. W. Chisholm, Rapid 870 diversification of marine picophytoplankton with dissimilar light-harvesting structures 871 inferred from sequences of Prochlorococcus and Synechococcus (Cyanobacteria), J Mol Evol, vol.872, issue.46, pp.188-201, 1998.

K. Wang, K. E. Wommack, and F. Chen, Abundance and Distribution of Synechococcus spp. and Cyanophages in the Chesapeake Bay, Applied and Environmental Microbiology, vol.77, issue.21, pp.7459-7468, 2011.
DOI : 10.1128/AEM.00267-11

T. Wei, Corrplot: visualization of a correlation matrix. R package version 0.77, 2011.

C. Woffelman, DNAMAN for Windows, Version 5.2. 10, Lynon Biosoft, p.878, 2004.

A. M. Wood, Adaptation of photosynthetic apparatus of marine ultraphytoplankton to natural light fields, Nature, vol.8, issue.6025, pp.253-255, 1985.
DOI : 10.1038/316253a0

A. M. Wood, D. A. Phinney, Y. , and C. S. , Water column transparency and the 882 distribution of spectrally distinct forms of phycoerythrin-containing organisms, Mar Ecol, vol.883, 1998.

A. M. Wood, M. Lipsen, and P. Coble, Fluorescence-based characterization of phycoerythrin-containing cyanobacterial communities in the Arabian Sea during the Northeast and early Southwest Monsoon (1994???1995), Deep Sea Research Part II: Topical Studies in Oceanography, vol.46, issue.8-9, pp.1769-1790, 1994.
DOI : 10.1016/S0967-0645(99)00043-0

X. Xia, W. Guo, and H. Liu, Dynamics of the bacterial and archaeal communities in the Northern South China Sea revealed by 454 pyrosequencing of the 16S rRNA gene, Deep Sea Research Part II: Topical Studies in Oceanography, vol.117, pp.97-107, 2015.
DOI : 10.1016/j.dsr2.2015.05.016

X. Xia, N. K. Vidyarathna, B. Palenik, P. Lee, and H. Liu, Comparison of the seasonal 891 variation of Synechococcus assemblage structure in estuarine waters, p.892, 2015.

K. Zwirglmaier, L. Jardillier, M. Ostrowski, S. Mazard, L. Garczarek et al., Global phylogeography of marine Synechococcus and Prochlorococcus reveals a 895 distinct partitioning of lineages among oceanic biomes, Environ Microbiol, vol.894, issue.10, pp.147-161, 2008.