@article{fdi:010064234,
  title = {{H}ydrocarbons in a coral reef ecosystem subjected to anthropogenic pressures ({L}a {R}eunion {I}sland, {I}ndian {O}cean)},
  author = {{G}uigue, {C}. and {B}igot, {L}. and {T}urquet, {J}. and {T}edetti, {M}arc and {F}erretto, {N}. and {G}outx, {M}. and {C}uet, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}nvironmental context {H}ydrocarbons are among the most widespread and harmful pollutants found in the aquatic media. {A}lthough they have been investigated in various temperate coastal environments, their dynamics in coral reef tropical ecosystems, which are under increasing human pressure, remain poorly understood. {I}t was found that hydrocarbons had moderate to high concentrations, multiple origins (biogenic and anthropogenic) and could be used to track inland intrusions in fore reef waters of the eutrophicated {L}a {S}aline reef ecosystem ({L}a {R}eunion {I}sland, {I}ndian {O}cean). {A}bstract {T}he {L}a {S}aline fringing reef, which is the most important coral reef complex of {L}a {R}eunion {I}sland, (south-western {I}ndian {O}cean), is subjected to anthropogenic pressures through river and groundwater inputs. {S}alinity and biogeochemical parameters (silicates, nitrates, dissolved organic carbon, chlorophyll-a), as well as aliphatic hydrocarbons ({AH}s) and polycyclic aromatic hydrocarbons ({PAH}s) were analysed in particulate and dissolved material from groundwaters, rivers, harbour, back reef, fore reef and oceanic waters in the {L}a {S}aline reef area during the rainy season ({F}ebruary-{M}arch 2012). {P}articulate and dissolved {AH} concentration ranges were 0.07-144 and 0.06-0.58 mu g{L}(-1) respectively. {P}articulate and dissolved {PAH} concentrations ranges were 4.3-326 and 28-350ng {L}-1 respectively. {AH}s, dominated by n{C}(15), n{C}(17), n{C}(18) compounds or n{C}(26), n{C}(27), n{C}(29), n{C}(31) compounds, were mainly of biogenic origin (phytoplankton, bacteria, higher-plant debris) although some anthropogenic (petroleum inputs) signatures were recorded in the dissolved phase from the harbour and fore reef areas. {PAH}s, dominated by two- to three-ring compounds and their alkylated homologues, reflected unburned petroleum inputs, but probably also biogenic sources. {F}rom the distribution of salinity, biogeochemical parameters and hydrocarbons, we found that inland waters flowed mainly in the surface and in the southern part of reef waters and that particulate {PAH}s allowed tracking these inland water intrusions in fore reef waters. {F}inally, this pilot study highlights the uncoupling between the dynamics of {AH}s and {PAH}s in tropical environments.},
  keywords = {aliphatic hydrocarbons ; groundwaters ; {L}a {S}aline fringing reef ; polycyclic aromatic hydrocarbons ; tropical environment ; {OCEAN} {INDIEN} ; {REUNION}},
  booktitle = {},
  journal = {{E}nvironmental {C}hemistry},
  volume = {12},
  numero = {3},
  pages = {350--365},
  ISSN = {1448-2517},
  year = {2015},
  DOI = {10.1071/en14194},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064234},
}