K. Anthony, J. A. Maynard, G. Diaz?pulido, P. J. Mumby, P. A. Marshall et al., Ocean acidification and warming will lower coral reef resilience, Global Change Biology, vol.19, issue.5, pp.1798-1808, 2011.
DOI : 10.1111/j.1365-2486.2010.02364.x

A. Antonius and J. Afonso-carillo, Pneophyllum conicum killing reefcorals in Mauritius: a new Indo-Pacific syndrome?, Bull. Mar. Sci, vol.69, pp.613-618, 2001.

A. Apprill, K. Hughen, and T. Mincer, Major similarities in the bacterial communities associated with lesioned and healthy Fungiidae corals, Environmental Microbiology, vol.30, issue.7, pp.2063-2072, 2013.
DOI : 10.1111/1462-2920.12107

K. L. Barott, B. Rodriguez?brito, J. Janou?kovec, K. L. Marhaver, J. E. Smith et al., Microbial diversity associated with four functional groups of benthic reef algae and the reef-building coral Montastraea annularis, Environmental Microbiology, vol.226, issue.5, pp.1192-1204, 2011.
DOI : 10.1111/j.1462-2920.2010.02419.x

K. L. Barott, B. Rodriguez-mueller, M. Youle, K. L. Marhaver, M. J. Vermeij et al., Microbial to reef scale interactions between the reef-building coral Montastraea annularis and benthic algae, Proceedings of the Royal Society B: Biological Sciences, vol.56, issue.5716, pp.1655-1664, 2012.
DOI : 10.1126/science.1104258

K. L. Barott and F. L. Rohwer, Unseen players shape benthic competition on coral reefs, Trends in Microbiology, vol.20, issue.12, 2012.
DOI : 10.1016/j.tim.2012.08.004

N. Bodenhausen, M. W. Horton, and J. Bergelson, Bacterial Communities Associated with the Leaves and the Roots of Arabidopsis thaliana, PLoS ONE, vol.100, issue.2, 2013.
DOI : 10.1371/journal.pone.0056329.s002

D. G. Bourne, M. Garren, T. M. Work, E. Rosenberg, G. W. Smith et al., Microbial disease and the coral holobiont, Trends in Microbiology, vol.17, issue.12, pp.554-562, 2009.
DOI : 10.1016/j.tim.2009.09.004

D. Bourne, Y. Iida, S. Uthicke, and C. Smith-keune, Changes in coral-associated microbial communities during a bleaching event, The ISME Journal, vol.64, issue.4, pp.350-363112, 2007.
DOI : 10.1007/BF00265014

J. G. Caporaso, J. Kuczynski, J. Stombaugh, K. Bittinger, F. D. Bushman et al., QIIME allows analysis of high-throughput community sequencing data, Nature Methods, vol.8, issue.5, pp.335-336, 2010.
DOI : 10.1038/nmeth.f.303

J. M. Cervino, R. L. Hayes, S. W. Polson, S. C. Polson, T. J. Goreau et al., Relationship of Vibrio Species Infection and Elevated Temperatures to Yellow Blotch/Band Disease in Caribbean Corals, Applied and Environmental Microbiology, vol.70, issue.11, pp.6855-6864, 2004.
DOI : 10.1128/AEM.70.11.6855-6864.2004

L. Coen, T. , and C. , Morphological variation and differential susceptibility to herbivory in the tropical brown alga Lobophora variegata, Mar. Ecol. Prog. Ser, vol.543354, pp.287-298, 1989.

R. M. Colwell, A. D. Lawrence, E. Raux-deery, M. J. Warren, and A. G. Smith, EstimateS: Statistical Estimation of Species Richness and Shared Species From Samples. Version IX Available online at: http: Algae acquire vitamin B12 through a symbiotic relationship with bacteria, Nature, vol.438, pp.90-93, 1038.

M. T. Croft, M. J. Warren, and A. G. Smith, Algae Need Their Vitamins, Eukaryotic Cell, vol.5, issue.8, pp.1175-1183, 2006.
DOI : 10.1128/EC.00097-06

G. Diaz-pulido, L. J. Mccook, S. Dove, R. Berkelmans, G. Roff et al., Doom and Boom on a Resilient Reef: Climate Change, Algal Overgrowth and Coral Recovery, PLoS ONE, vol.18, issue.4, 2009.
DOI : 10.1371/journal.pone.0005239.s001

R. C. Edgar, Search and clustering orders of magnitude faster than BLAST, Bioinformatics, vol.26, issue.19, p.461, 2010.
DOI : 10.1093/bioinformatics/btq461

S. Egan, T. Harder, C. Burke, P. Steinberg, S. Kjelleberg et al., The seaweed holobiont: understanding seaweed???bacteria interactions, FEMS Microbiology Reviews, vol.37, issue.3, pp.462-476, 2013.
DOI : 10.1111/1574-6976.12011

W. K. Fitt, B. E. Brown, M. E. Warner, R. P. Dunne, B. J. Haas et al., Coral bleaching: interpretation of thermal tolerance limits and thermal thresholds in tropical corals, Coral Reefs, vol.20, issue.1, pp.51-65, 2001.
DOI : 10.1007/s003380100146

J. Hollants, F. Leliaert, O. Clerck, and A. Willems, What we can learn from sushi: a review on seaweed-bacterial associations, FEMS Microbiology Ecology, vol.83, issue.1, 2013.
DOI : 10.1111/j.1574-6941.2012.01446.x

J. Hollants, F. Leliaert, H. Verbruggen, A. Willems, D. Clerck et al., Permanent residents or temporary lodgers: characterizing intracellular bacterial communities in the siphonous green alga Bryopsis, Proceedings of the Royal Society B: Biological Sciences, vol.109, issue.27, 2013.
DOI : 10.1073/pnas.1203287109

T. P. Hughes, Catastrophes, Phase Shifts, and Large-Scale Degradation of a Caribbean Coral Reef, Science, vol.265, issue.5178, 1994.
DOI : 10.1126/science.265.5178.1547

I. Joint, K. Tait, W. , and G. , Cross-kingdom signalling: exploitation of bacterial quorum sensing molecules by the green seaweed Ulva, Philosophical Transactions of the Royal Society B: Biological Sciences, vol.70, issue.10, pp.1223-1233, 2007.
DOI : 10.1128/IAI.70.10.5635-5646.2002

J. Jompa and L. J. Mccook, Effects of competition and herbivory on interactions between a hard coral and a brown alga, Journal of Experimental Marine Biology and Ecology, vol.271, issue.1, pp.25-39, 2002.
DOI : 10.1016/S0022-0981(02)00040-0

J. Jompa and L. J. Mccook, ), Limnology and Oceanography, vol.47, issue.2, pp.527-534, 2002.
DOI : 10.4319/lo.2002.47.2.0527

E. Keshtacher-liebso, Y. Hadar, C. , and Y. , Oligotrophic bacteria enhance algal growth under iron-deficient conditions, Appl. Environ. Microbiol, vol.61, pp.2439-2441, 1995.

S. Kim, Y. D. Ravichandran, S. B. Khan, K. , and Y. T. , Prospective of the cosmeceuticals derived from marine organisms, Biotechnology and Bioprocess Engineering, vol.19, issue.5, pp.511-523, 2008.
DOI : 10.1007/s12257-008-0113-5

J. Kubanek, P. R. Jensen, P. A. Keifer, M. C. Sullards, D. O. Collins et al., Seaweed resistance to microbial attack: A targeted chemical defense against marine fungi, Proceedings of the National Academy of Sciences, vol.100, issue.12, pp.6916-6921, 2003.
DOI : 10.1073/pnas.1131855100

E. C. Kvennefors, E. Sampayo, T. Ridgway, A. C. Barnes, and O. Hoegh-guldberg, Bacterial Communities of Two Ubiquitous Great Barrier Reef Corals Reveals Both Site- and Species-Specificity of Common Bacterial Associates, PLoS ONE, vol.5, issue.4, 2010.
DOI : 10.1371/journal.pone.0010401.s002

D. Lane, 16S/23S rRNA sequencing, Nucleic Acid Techniques in Bacterial Systematics, pp.125-175, 1991.

C. Linnaeus, Systema Naturae per Regna Tria Naturae, Secundum Classes, 1758.

J. Mao-jones, K. B. Ritchie, L. E. Jones, and S. P. Ellner, How Microbial Community Composition Regulates Coral Disease Development, PLoS Biology, vol.21, issue.3, 2010.
DOI : 10.1371/journal.pbio.1000345.s005
URL : http://doi.org/10.1371/journal.pbio.1000345

Y. Matsuo, M. Suzuki, H. Kasai, Y. Shizuri, S. T. Harayama et al., Isolation and phylogenetic characterization of bacteria capable of inducing differentiation in the green alga Monostroma oxyspermum Fleshy algae dominate remote coral reefs of Belize, Environ. Microbiol. Coral Reefs, vol.5, issue.18, pp.25-35, 1007.

L. Mccook, J. Jompa, and G. Diaz-pulido, Competition between corals and algae on coral reefs: a review of evidence and mechanisms, Coral Reefs, vol.19, issue.4, pp.400-417, 2001.
DOI : 10.1007/s003380000129

D. Mcdonald, M. N. Price, J. Goodrich, E. P. Nawrocki, T. Z. Desantis et al., An improved Greengenes taxonomy with explicit ranks for ecological and evolutionary analyses of bacteria and archaea, The ISME Journal, vol.180, issue.3, pp.610-618, 2012.
DOI : 10.1038/nature08656

K. M. Morrow, M. R. Liles, V. J. Paul, A. G. Moss, C. et al., Bacterial shifts associated with coral???macroalgal competition in the Caribbean Sea, Marine Ecology Progress Series, vol.488, pp.103-117, 2013.
DOI : 10.3354/meps10394

K. M. Morrow, R. Ritson-williams, C. Ross, M. R. Liles, P. et al., Macroalgal Extracts Induce Bacterial Assemblage Shifts and Sublethal Tissue Stress in Caribbean Corals, PLoS ONE, vol.7, issue.9, 2012.
DOI : 10.1371/journal.pone.0044859.t004

K. Morrow, V. Paul, M. Liles, C. , and N. , Allelochemicals produced by Caribbean macroalgae and cyanobacteria have species-specific effects on reef coral microorganisms, Coral Reefs, vol.32, issue.2, pp.309-320, 2011.
DOI : 10.1007/s00338-011-0747-1

M. E. Mouchka, I. Hewson, C. D. Harvell, K. Nakanishi, M. Nishijima et al., Coral-associated bacterial assemblages: current knowledge and the potential for climate-driven impacts Bacteria that induce morphogenesis in Ulva pertusa (Chlorophyta) grown under axenic conditions Phylogenetic characterization of culturable bacterial diversity associated with the mucus and tissue of the coral Acropora digitifera from the Gulf of Mannar Long-term dynamics of the brown macroalga Lobophora variegata on deep reefs in Curacao, Integr. Comp. Biol. J. Phycol. FEMS Microbiol. Ecol. Coral Reefs, vol.50, issue.27, pp.662-674, 1007.

M. M. Nugues and R. P. Bak, Differential competitive abilities between Caribbean coral species and a brown alga: a year of experiments and a long-term perspective, Marine Ecology Progress Series, vol.315, pp.75-86, 2006.
DOI : 10.3354/meps315075

M. M. Nugues, G. W. Smith, R. J. Hooidonk, M. I. Seabra, and R. P. Bak, Algal contact as a trigger for coral disease, Ecology Letters, vol.2, issue.10, pp.919-923, 2004.
DOI : 10.1111/j.1461-0248.2004.00651.x

C. H. Porsby, K. F. Nielsen, and L. Gram, Phaeobacter and Ruegeria Species of the Roseobacter Clade Colonize Separate Niches in a Danish Turbot (Scophthalmus maximus)-Rearing Farm and Antagonize Vibrio anguillarum under Different Growth Conditions, Applied and Environmental Microbiology, vol.74, issue.23, pp.7356-7364, 1128.
DOI : 10.1128/AEM.01738-08

M. N. Price, P. S. Dehal, and A. P. Arkin, FastTree 2 ??? Approximately Maximum-Likelihood Trees for Large Alignments, PLoS ONE, vol.5, issue.3, 2010.
DOI : 10.1371/journal.pone.0009490.s003

L. Provasoli, I. J. Pintner, S. , and G. W. , BACTERIA INDUCED POLYMORPHISM IN AN AXENIC LABORATORY STRAIN OF ULVA LACTUCA (CHLOROPHYCEAE), Journal of Phycology, vol.6, issue.2, pp.196-201, 1980.
DOI : 10.1111/j.0022-3646.1972.00010.x

D. B. Rasher and M. E. Hay, Seaweed allelopathy degrades the resilience and function of coral reefs, Communicative & Integrative Biology, vol.3, issue.6, pp.564-566, 2010.
DOI : 10.4161/cib.3.6.12978

R. Development, C. Team, L. Koren, O. Loya, Y. Zilber?rosenberg et al., R: a Language and Environment for Statistical Computing Vienna: The R Foundation for Statistical Computing, Institute for Statistics and Mathematics Available online at: http://cran.r-project The coral probiotic hypothesis, org Reshef, Environ. Microbiol, vol.8, pp.2068-2073, 2006.

K. B. Ritchie, Regulation of microbial populations by coral surface mucus and mucus-associated bacteria, Marine Ecology Progress Series, vol.322, pp.1-14, 2006.
DOI : 10.3354/meps322001

F. Rohwer, V. Seguritan, F. Azam, and N. Knowlton, Diversity and distribution of coral-associated bacteria, Marine Ecology Progress Series, vol.243, pp.1-10, 2002.
DOI : 10.3354/meps243001

E. Rosenberg, O. Koren, L. Reshef, R. Efrony, and I. Zilber-rosenberg, The role of microorganisms in coral health, disease and evolution, Nature Reviews Microbiology, vol.70, issue.5, pp.355-362, 1038.
DOI : 10.1038/nrmicro1635

M. Sapp, A. S. Schwaderer, K. H. Wiltshire, H. Hoppe, G. Gerdts et al., Species-Specific Bacterial Communities in the Phycosphere of Microalgae?, Microbial Ecology, vol.70, issue.4, pp.683-699, 2007.
DOI : 10.1007/s00248-006-9162-5

M. G. Séré, P. Tortosa, P. Chabanet, J. Turquet, J. Quod et al., Bacterial communities associated with Porites white patch syndrome (PWPS) on three Western Indian Ocean (WIO) coral reefs, PLoS ONE, vol.8, 2013.

M. Slattery and M. P. Lesser, (Phaeophyceae): mechanistic basis for a phase shift on mesophotic coral reefs?, Journal of Phycology, vol.36, issue.3, pp.493-505, 2014.
DOI : 10.1111/jpy.12160

J. E. Smith, M. Shaw, R. A. Edwards, D. Obura, O. Pantos et al., Indirect effects of algae on coral: algae-mediated, microbe-induced coral mortality, Ecology Letters, vol.268, issue.7, pp.835-845, 2006.
DOI : 10.1007/BF00354620

S. B. Stratil, S. C. Neulinger, H. Knecht, A. K. Friedrichs, and M. Wahl, Temperature?driven shifts in the epibiotic bacterial community composition of the brown macroalga Fucus vesiculosus, pp.338-349, 2013.

S. Sunagawa, T. Z. Desantis, Y. M. Piceno, E. L. Brodie, M. K. Desalvo et al., Bacterial diversity and White Plague Disease-associated community changes in the Caribbean coral Montastraea faveolata, The ISME Journal, vol.34, issue.5, pp.512-521131, 2008.
DOI : 10.1016/j.jembe.2008.05.011

M. J. Sweet, J. C. Bythell, and M. M. Nugues, Algae as Reservoirs for Coral Pathogens, PLoS ONE, vol.35, issue.7, 2013.
DOI : 10.1371/journal.pone.0069717.s005

R. V. Thurber, D. E. Burkepile, A. M. Correa, A. R. Thurber, A. A. Shantz et al., Macroalgae Decrease Growth and Alter Microbial Community Structure of the Reef-Building Coral, Porites astreoides, PLoS ONE, vol.7, issue.9, 2012.
DOI : 10.1371/journal.pone.0044246.s006

M. Vermeij, J. Smith, C. Smith, R. V. Thurber, and S. Sandin, Survival and settlement success of coral planulae: independent and synergistic effects of macroalgae and microbes, Oecologia, vol.206, issue.2, pp.325-336, 2009.
DOI : 10.1007/s00442-008-1223-7

C. Vieira, S. D-'hondt, O. De-clerck, and C. E. Payri, (Dictyotales, Phaeophyceae) in??New Caledonia, Journal of Phycology, vol.99, issue.6, pp.1101-1119, 2014.
DOI : 10.1111/jpy.12243
URL : https://hal.archives-ouvertes.fr/hal-01102821

C. Vieira, J. Gaubert, O. De-clerck, C. Payri, G. Culioli et al., Biological activities associated to the chemodiversity of the brown algae belonging to genus Lobophora (Dictyotales, Phaeophyceae), Phytochemistry Reviews, vol.19, issue.1, 2015.
DOI : 10.1007/s11101-015-9445-x

C. Vieira, O. P. Thomas, G. Culioli, G. Genta-jouve, F. Houlbreque et al., Allelopathic interactions between the brown algal genus Lobophora (Dictyotales, Phaeophyceae) and scleractinian corals, Scientific Reports, vol.20, issue.1, 2016.
DOI : 10.1007/s003380100146
URL : https://hal.archives-ouvertes.fr/hal-01270639

Q. Wang, G. M. Garrity, J. M. Tiedje, C. , and J. R. , Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy, Applied and Environmental Microbiology, vol.73, issue.16, pp.5261-5267, 2007.
DOI : 10.1128/AEM.00062-07

M. E. Warner, W. K. Fitt, and G. W. Schmidt, Damage to photosystem II in symbiotic dinoflagellates: A determinant of coral bleaching, Proceedings of the National Academy of Sciences, vol.96, issue.14, pp.8007-8012, 1999.
DOI : 10.1073/pnas.96.14.8007