@article{fdi:010059919,
  title = {{S}patial variability of stable isotope ratios in oysters ({C}rassostrea gigas) and primary producers along an estuarine gradient ({B}ay of {B}rest, {F}rance)},
  author = {{M}archais, {V}. and {S}chaal, {G}. and {G}rall, {J}. and {L}orrain, {A}nne and {N}erot, {C}. and {R}ichard, {P}. and {C}hauvaud, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study aimed at characterizing the diet of the oyster {C}rassostrea gigas along an estuarine gradient in the {B}ay of {B}rest ({F}rance), through stable isotope (delta {C}-13 and delta {N}-15) measurements in primary producers and wild oysters. {T}he contribution of different potential food sources to the diet of {C}. gigas was estimated at high spatial resolution (over a gradient of 40 km with samplings every 2 km) to identify ecological transition zones and highlighted the dominance of resuspended biofilm in oysters diet. {A}lthough the different primary producers did not display any obvious pattern along the estuarine gradient, the stable isotope signatures of {C}. gigas differed among estuarine, inner {B}ay, and open sea sites. {I}n particular, a striking {N}-15 depletion pattern was found along the gradient which allowed to identify seven homogeneous groups. {M}oreover, some unexpected values found at two stations within the estuary revealed localized anthropogenic disturbances. {O}verall, our results suggest that suspension feeders might be better indicators of ecosystem functioning than primary producers and reflect the different ecological processes occurring along estuarine gradients, including localized anthropogenic inputs. {W}e suggest that the usefulness of suspension feeders as indicators of ecosystem functional typology lies in the dominance of benthic material in their diet, which results in locally occurring processes being reflected in oysters' stable isotope ratios.},
  keywords = {{B}iofilm ; {C}arbon ; {N}itrogen ; {F}ood web ; {E}stuary ; {B}ay of {B}rest ; {FRANCE}},
  booktitle = {},
  journal = {{E}stuaries and {C}oasts},
  volume = {36},
  numero = {4},
  pages = {808--819},
  ISSN = {1559-2723},
  year = {2013},
  DOI = {10.1007/s12237-012-9584-x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010059919},
}