@article{PAR00007488,
  title = {{D}elta13{C} in {M}ytilus edulis shells : relation to salinity, {DIC}, phytoplankton and metabolism},
  author = {{G}illikin, {D}.{P}. and {L}orrain, {A}nne and {B}ouillon, {S}. and {D}ehairs, {F}. and {W}illenz, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ivalve shells can potentially record the carbon isotopic signature of the dissolved inorganic carbon (?13{CDIC}) in estuarine waters, thereby providing information about past estuarine biogeochemical cycles. {H}owever, the fluid from which these animals calcify is a ?pool' of metabolic {CO}2 and external dissolved inorganic carbon ({DIC}). {T}he incorporation of respired 13{C} depleted carbon into the skeletons of aquatic invertebrates is well documented, and may affect the ?13{CDIC} record of the skeleton. {T}ypically, less than 10 % of the carbon in the skeleton is metabolic in origin, although higher amounts have been reported. {I}f this small offset is more or less constant, large biogeochemical gradients in estuaries may be recorded in the ?13{C} value of bivalve shells. {I}n this study, it is assessed if the ?13{C} values of {M}ytilus edulis shells can be used as a proxy of ?13{CDIC} as well as provide an indication of salinity. {F}irst, the ?13{C} values of respired {CO}2 (?13{CR}) was considered using the ?13{C} values of soft tissues as a proxy for ?13{CR}. {A}long the strong biogeochemical gradient of the {S}cheldt estuary ({T}he {N}etherlands ? {B}elgium), ?13{CR} was linearly related to ?13{CDIC} (r2 = 0.87), which in turn was linearly related to salinity (r2 = 0.94). {T}he mussels were highly selective, assimilating most of their carbon from phytoplankton out of the total particulate organic carbon ({POC}) pool. {H}owever, on a seasonal basis, tissue ?13{C} varied differently than ?13{CDIC} and ?13{CPOC}, most likely due to lipid content of the tissue. {A}ll shells contained less than 10 % metabolic {C}, but ranged from near zero to 10 %, thus excluding the use of ?13{C} in these shells as a robust ?13{CDIC} or salinity proxy. {A}s an example, an error in salinity of about five would have been made at one site. {N}evertheless, large changes in ?13{CDIC} (>2 ?) can be determined using {M}. edulis shell ?13{C}.},
  keywords = {},
  booktitle = {},
  journal = {{O}rganic {G}eochemistry},
  volume = {37},
  numero = {10},
  pages = {1371--1382},
  year = {2006},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00007488},
}