@article{fdi:010025538,
  title = {{L}ake levels in the southern {B}olivian {A}ltiplano (19°-21°{S}) during the {L}ate {G}lacial based on diatom studies},
  author = {{S}ylvestre, {F}lorence and {S}ervant {V}ildary, {S}imone and {F}ournier, {M}arc and {S}ervant, {M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study is focused on the endorheic {U}yuni-{C}oipasa {B}asin located in the southern {B}olivian {A}ltiplano. {S}tratigraphical and fossil diatom studies based on a detailed radiocarbon chronology revealed six phases in water-level changes and paleosalinity variations. {A}t 15,430 +- 80 yr {B}.{P}., lacustrine conditions settled in the southern {B}olivian {A}ltiplano. {A} saline lake, characterized by benthic meso-metasaline species, reached +4 m altitude above the present bottom of the basin. {A}fter 15,430 +- 80 yr {B}.{P}. the level rapidly rose to + 27 m, as suggested by a tychoplanktonic mesoline flora. {B}etween 14,500 years and 13,000 years, finely lamited sediments at + 32 m contained successively a dominance of epiphytic mesosaline to hypersaline species and tychoplanktonic oligosaline diatoms, indicating weak fluctuations in water-level and salinity. {A}t 13,000 years, strong changes in the diatom flora occurred: epiphytic oligo-hypersaline diatoms were replaced by planktonic meso-polysaline species. {T}hey indicate a deep salt lake (the lake level reached + 100 m). {A}fter 12,j000 yars, the lake level abruptly dropped, as suggested by fluviatile sediments with a benthic mesopolysaline diatom flora. {T}he main lake was replaced by shallow saline ponds. {A} wet pulse occurred at 11,400 years, characterizad by low water level ( + 7 m) and high salinity. {T}his lacustrine phase remained until 10,400 yr {B}.{P}. {T}hese data indicate changes in {P}recipitation minus {E}vaporation ({P}-{E}). {O}ur regional interpretations are based on a comparison with the available data on the northern ({L}ake {T}iticaca) and southern ({L}ipez area) {B}olivian {A}ltiplano and on the northern {C}hilean {A}ltiplano ({A}tacama {D}esert). ({R}{\'e}sum{\'e} d'auteur).},
  keywords = {{FLORE} ; {DIATOMEE} ; {FOSSILE} ; {STRATIGRAPHIE} ; {PALEOCLIMAT} ; {NIVEAU} {DE} {L}'{EAU} ; {SALINITE} ; {SEDIMENTATION} {GLACIAIRE} ; {SEDIMENTATION} {FLUVIATILE} ; {MILIEU} {LACUSTRE} ; {BOLIVIE} ; {ANDES} ; {ALTIPLANO} {REGION}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {S}alt {L}ake {R}esearch},
  volume = {4},
  numero = {},
  pages = {281--300},
  year = {1996},
  DOI = {10.1007/{BF}01999113},
  URL = {https://www.documentation.ird.fr/hor/fdi:010025538},
}