@article{fdi:010077880,
  title = {{C}ontrasting arsenic biogeochemical cycling in two {M}oroccan alkaline pit lakes},
  author = {{H}ery, {M}. and {D}esoeuvre, {A}. and {B}enyassine, {E}. and {B}runeel, {O}dile and {D}elpoux, {S}. and {R}esongles, {E}. and {D}ekayir, {A}. and {C}asiot, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}it lakes resulting from the flooding of abandoned mines represent a valuable freshwater reserve. {H}owever, water contamination by toxic elements, including arsenic, compromises their use for freshwater supply. {F}or a better management of these reserves, our aim was to gain insight into arsenic cycling in two {M}oroccan alkaline pit lakes. {W}e first showed that dimethylarsenic dominated in stratified lake {ZA} whereas in lake {ZL}1, {A}s({V}) was prevailing. {B}ecause microbially mediated processes largely contribute to arsenic cycling, the diversity of arsenic-methylating and -oxidizing bacteria was determined through the sequencing of ars{M} and aio{A} genes. {D}iverse ars{M}-carrying bacteria were thriving in {ZA} while a low diversity of aio{A} genes was detected in {ZL}1. {W}e also determined the structure of the total bacterial communities by fingerprinting ({ARISA}). {C}ontrasting arsenic speciation and bacterial communities in the two lakes were associated with differences of conductivity, {T}otal {O}rganic {C}arbon and temperature. {I}n {ZA}, dissolved oxygen and redox potential were the main factors driving the total bacterial community structure and the {A}rs{M} diversity. {I}n {ZL}1, stable bacterial communities were associated with limited water physico-chemistry variations. {O}ur study provides new insights into the biogeochemical behavior of arsenic and the role of arsenic transforming bacteria in alkaline pit lakes.},
  keywords = {{A}rsenic ; {B}iotransformation ; {A}lkaline pit lake ; {M}ethylation ; {O}xidation ; {MAROC}},
  booktitle = {},
  journal = {{R}esearch in {M}icrobiology},
  volume = {171},
  numero = {1},
  pages = {28--36},
  ISSN = {0923-2508},
  year = {2020},
  DOI = {10.1016/j.resmic.2019.10.007},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077880},
}