@article{PAR00012381,
  title = {{I}nfluence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons of {F}rench {P}olynesia},
  author = {{L}acoste, {E}. and {G}ueguen, {Y}. and {L}e {M}oullac, {G}. and {K}oua, {M}. {S}. and {G}aertner-{M}azouni, {N}abila},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ivalve cultivation can significantly contribute to nutrient cycling in semi-enclosed ecosystems. {W}e investigated the influence of suspended pearl oyster culture on nutrient regeneration in the water column of 3 oligotrophic lagoons in {F}rench {P}olynesia. {T}he aim of this first study performed in a tropical area was to assess the seasonal variability of nutrient fluxes and to quantify the contribution of biofouling communities. {I}n situ metabolic enclosure systems were used to measure nutrient uptake or release by 'cultivation units' (i.e. 4 pearl oysters with or without associated biofouling). {I}n all 3 study lagoons ({T}ahiti, {M}angareva, {A}he), nutrient fluxes produced by pearl oyster and associated biofouling communities ({CR} units) were 4- to 6-fold higher than those measured for cleaned pearl oysters. {CR} units can release dissolved inorganic nitrogen and soluble reactive phosphorus in the water column at a rate of 200 and 50 mu mol h(-1), respectively. {T}rophic level and composition of biofouling communities may explain the variations of fluxes observed between the different islands. {A}t the pearl farm scale ({A}he), pearl oyster long-lines may supply 70% of the inorganic nitrogen demand for primary production, with biofouling communities accounting for 60% of the total nutrient release. {P}earl oyster culture enhances nutrient availability and alters stoichiometry, which can strongly modify the dynamics of the planktonic ecosystem.},
  keywords = {{P}earl oysters ; {B}iofouling ; {N}utrient flux ; {A}quaculture impact ; {POLYNESIE} {FRANCAISE}},
  booktitle = {},
  journal = {{A}quaculture {E}nvironment {I}nteractions},
  volume = {5},
  numero = {3},
  pages = {209--219},
  ISSN = {1869-215{X}},
  year = {2014},
  DOI = {10.3354/aei00107},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00012381},
}