@article{fdi:010076478,
  title = {{E}xtreme arsenic bioaccumulation factor variability in {L}ake {T}iticaca, {B}olivia},
  author = {{S}arret, {G}. and {G}u{\'e}dron, {S}t{\'e}phane and {A}cha, {D}. and {B}ureau, {S}. and {A}rnaud-{G}odet, {F}. and {T}isserand, {D}. and {G}oni-{U}rriza, {M}. and {G}assie, {C}. and {D}uwig, {C}{\'e}line and {P}roux, {O}. and {A}ucour, {A}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{L}atin {A}merica, like other areas in the world, is faced with the problem of high arsenic ({A}s) background in surface and groundwater, with impacts on human health. {W}e studied {A}s biogeochemical cycling by periphyton in {L}ake {T}iticaca and the mine-impacted {L}ake {U}ru {U}ru. {A}s concentration was measured in water, sediment, totora plants ({S}choenoplectus californicus) and periphyton growing on stems, and {A}s speciation was determined by {X}-ray absorption spectroscopy in bulk and {EDTA}-extracted periphyton. {D}issolved arsenic was between 5.0 and 15 mu g {L}-1 in {L}ake {T}iticaca and reached 78.5 mu g {L}-1 in {L}ake {U}ru {U}ru. {A}s accumulation in periphyton was highly variable. {W}e report the highest {A}s bioaccumulation factors ever measured ({BAF}s(periphyton) up to 245,000) in one zone of {L}ake {T}iticaca, with {A}s present as {A}s({V}) and monomethyl-{A}s ({MMA}({V})). {N}on-accumulating periphyton found in the other sites presented {BAF}speriphyton between 1281 and 11,962, with {A}s present as {A}s({III}), {A}s({V}) and arsenosugars. {DNA} analysis evidenced several taxa possibly related to this phenomenon. {F}urther screening of bacterial and algal isolates would be necessary to identify the organism(s) responsible for {A}s hyperaccumulation. {I}mpacts on the ecosystem and human health appear limited, but such organisms or consortia would be of great interest for the treatment of {A}s contaminated water.},
  keywords = {{BOLIVIE} ; {ANDES} ; {TITICCA} {LAC}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {9},
  numero = {},
  pages = {art. 10626 [12 p.]},
  ISSN = {2045-2322},
  year = {2019},
  DOI = {10.1038/s41598-019-47183-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076478},
}