@article{fdi:010080421, title = {{H}igh methylmercury uptake by green algae in {L}ake {T}iticaca : potential implications for remediation}, author = {{Q}uiroga-{F}lores, {R}. and {G}u{\'e}dron, {S}t{\'e}phane and {A}cha, {D}.}, editor = {}, language = {{ENG}}, abstract = {{A}nthropogenic pressure in the high altitude lakes such as {T}iticaca and {U}ru ({B}olivia) may favor the production of methylmercury ({M}e{H}g) known to accumulate in trophic chains. {P}eriphyton associated with emerged aquatic plants (totoras) from the lake shores accumulates and demethylates {M}e{H}g providing a potential cost-effective water treatment technique. {I}n this laboratory study, we measured the {M}e{H}g uptake kinetics of a consortium of green algae isolated from {L}ake {T}iticaca totora's periphyton. {T}he most abundant algal consortium, composed of {O}edogonium spp., {C}hlorella spp., {S}cenedesmus spp., was exposed to rising {M}e{H}g concentrations (from 5 to 200 ng.{L}-1) to assess their maximum potential capacity for {M}e{H}g accumulation. {V}arious algal biomass concentra-tions were tested to choose the optimal one. {R}esults provided a net {M}e{H}g uptake rate by this algal consortium of 2.38 amol ng(-1).h(-1).n{M}(-1) (the total uptake was 2863 ng {M}e{H}g.g(-1)) for an initial concentration of 200 ng {M}e{H}g.{L}-1 with an algal biomass concentration of 0.02 g.{L}-1. {T}his initial {M}e{H}g concentration is 1000 times higher than the one measured in the eutrophic {C}ohana {B}ay of {L}ake {T}iticaca, which shows the high accumulation potential of these green algae. {O}ur data suggest that periphyton has a high potential for the treatment of {H}g contaminated waters in constructing wetlands in the {A}ndean {A}ltiplano.}, keywords = {{M}ethylmercury ; {U}ptake ; {O}edogonium ; {C}hlorella ; {S}cenedesmus ; {BOLIVIE} ; {TITICACA} {LAC}}, booktitle = {}, journal = {{E}cotoxicology and {E}nvironmental {S}afety}, volume = {207}, numero = {}, pages = {111256 [6 p.]}, ISSN = {0147-6513}, year = {2021}, URL = {https://www.documentation.ird.fr/hor/fdi:010080421}, }