@article{fdi:010092729,
  title = {{S}ulfides as environmental stressors in {P}aracas {B}ay, {P}eru},
  author = {{R}ioual, {F}. and {F}lye-{S}ainte-{M}arie, {J}. and {P}oint, {D}avid and {C}olas, {F}ran{\c{c}}ois and {C}uellar-{M}artinez, {T}. and {T}am, {J}. and {D}iaz, {K}. and {C}arhuapoma, {W}. and {G}raco, {M}. and {J}ean, {F}. and {A}guirre-{V}elarde, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}aracas {B}ay, located in the {H}umboldt {C}urrent system, is a highly variable coastal environment where hypoxia (dissolved oxygen concentrations <2 mg {L}-1) has been reported as a persistent feature of bottom conditions. {I}n addition to hypoxia, milky water events have been reported in the bay, most likely associated with the presence of sulfides (i.e. sulfidic events), including toxic hydrogen sulfide ({H}2{S}). {T}his study is the first report of sulfide concentrations in the water column of {P}aracas {B}ay, with concentrations up to 6.79 mu mol {L}-1 measured in the bottom water layer using {D}iffusive {G}radient in {T}hin film ({DGT}) passive samplers. {S}ulfides showed a marked seasonal pattern, while {ENSO} phases did not seem to affect their occurrence. {T}he presence of sulfides in the water column is closely linked to hypoxic conditions. {I}ndeed, the analysis of the relationship between the duration of severe bottom hypoxia (dissolved oxygen <= 0.15 mg {L}-1) and sulfides concentrations revealed a threshold of 18 h for sulfides accumulation in the overlying waters. {A}lso, a gradient in sulfides concentration was observed from the sediment to the upper water layer. {T}his gradient coupled with the variability of environmental variables (temperature, dissolved oxygen and currents velocity) highlights the complexity of this system, and suggests that a combination of advective and local physical and biogeochemical processes are responsible for the sulfidic events to occur in {P}aracas {B}ay. {T}his study provides a baseline for assessing the potential toxicity of sulfides to cultured {P}eruvian scallops in upwelling bays.},
  keywords = {{H}umboldt {C}urrent system ; {U}pwelling bay ; {S}ulfides ; {H}ypoxia ; {E}nvironmental monitoring ; {PEROU} ; {PACIFIQUE} ; {HUMBOLDT} {COURANT} ; {PARACAS} {BAIE}},
  booktitle = {},
  journal = {{M}arine {P}ollution {B}ulletin},
  volume = {212},
  numero = {},
  pages = {117550 [14 p.]},
  ISSN = {0025-326{X}},
  year = {2025},
  DOI = {10.1016/j.marpolbul.2025.117550},
  URL = {https://www.documentation.ird.fr/hor/fdi:010092729},
}