@article{fdi:010065269,
  title = {{C}hanges in bacterial community metabolism and composition during the degradation of dissolved organic matter from the jellyfish {A}urelia aurita in a {M}editerranean coastal lagoon},
  author = {{B}lanchet, {M}. and {P}ringault, {O}livier and {B}ouvy, {M}arc and {C}atala, {P}. and {O}riol, {L}. and {C}aparros, {J}. and {O}rtega-{R}etuerta, {E}. and {I}ntertaglia, {L}. and {W}est, {N}. and {A}gis, {M}. and {G}ot, {P}. and {J}oux, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}patial increases and temporal shifts in outbreaks of gelatinous plankton have been observed over the past several decades in many estuarine and coastal ecosystems. {T}he effects of these blooms on marine ecosystem functioning and particularly on the dynamics of the heterotrophic bacteria are still unclear. {T}he response of the bacterial community from a {M}editerranean coastal lagoon to the addition of dissolved organic matter ({DOM}) from the jellyfish {A}urelia aurita, corresponding to an enrichment of dissolved organic carbon ({DOC}) by 1.4, was assessed for 22 days in microcosms (8 l). {T}he high bioavailability of this material led to (i) a rapid mineralization of the {DOC} and dissolved organic nitrogen from the jellyfish and (ii) the accumulation of high concentrations of ammonium and orthophosphate in the water column. {DOM} from jellyfish greatly stimulated heterotrophic prokaryotic production and respiration rates during the first 2 days; then, these activities showed a continuous decay until reaching those measured in the control microcosms (lagoon water only) at the end of the experiment. {B}acterial growth efficiency remained below 20 %, indicating that most of the {DOM} was respired and a minor part was channeled to biomass production. {C}hanges in bacterial diversity were assessed by tag pyrosequencing of partial bacterial 16{S} r{RNA} genes, {DNA} fingerprints, and a cultivation approach. {W}hile bacterial diversity in control microcosms showed little changes during the experiment, the addition of {DOM} from the jellyfish induced a rapid growth of {P}seudoalteromonas and {V}ibrio species that were isolated. {A}fter 9 days, the bacterial community was dominated by {B}acteroidetes, which appeared more adapted to metabolize high-molecular-weight {DOM}. {A}t the end of the experiment, the bacterial community shifted toward a higher proportion of {A}lphaproteobacteria. {R}esilience of the bacterial community after the addition of {DOM} from the jellyfish was higher for metabolic functions than diversity, suggesting that jellyfish blooms can induce durable changes in the bacterial community structure in coastal lagoons.},
  keywords = {{A}urelia aurita ; {J}ellyfish ; {O}rganic matter ; {H}eterotrophic bacteria ; {B}iodegradation ; {B}acterial growth efficiency ; {B}acterial diversity ; {FRANCE} ; {ZONE} {MEDITERRANEENNE}},
  booktitle = {},
  journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch},
  volume = {22},
  numero = {18},
  pages = {13638--13653},
  ISSN = {0944-1344},
  year = {2015},
  DOI = {10.1007/s11356-014-3848-x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065269},
}