@article{fdi:010082316,
  title = {{L}ate-{H}olocene palaeoenvironmental reconstruction from a lake in the {A}mazon {R}ainforest-{T}ropical {S}avanna ({C}errado) boundary in {B}razil using a multi-proxy approach},
  author = {{S}ouza, {K}. {M}. and {S}ilva, {M}. {L}. and {C}ampello, {C}. {R}. and {S}ifeddine, {A}bdelfettah and {T}urcq, {B}runo and {M}isailidis, {S}. {N}. and {S}imoes, {S}. {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s an ecotone, the region between the {A}mazon {R}ainforest and {T}ropical {S}avanna ({C}errado) biomes is, by definition, more susceptible to climate change. {T}herefore, understanding palaeoenvironmental dynamics is essential to address the future responses of such transition areas to climatic fluctuations. {I}n this context, we present a new sediment record for the {L}ate-{H}olocene retrieved from {B}arro-{P}reto, currently an oxbow lake located in an ecotone at the southern {B}razilian {A}mazon border. {O}ur multi-proxy data include carbon and nitrogen isotopes, as well as bulk {TOC}, chlorophyll derivatives, grain-size and microcharcoal analyses, all anchored on a radiocarbon-dated chronology. {T}he sedimentary process recorded at the {B}arro-{P}reto {L}ake responded to both local and regional climate dynamics. {I}t was influenced by river excursions associated to local responses to precipitation changes by the activation of the palaeochannel connecting the main-stem river and the {B}arro-{P}reto lake. {T}his activation was evidenced by the presence of different colour lithology laminations accompanied by coarser sediments and also by climate conditions known to influence the {A}mazon region. {D}epositional processes linked to lake dynamics and different oxbow lake cycle stages were also important to explain the changes verified in the {B}arro-{P}reto record, endorsing the use of this lake formation for palaeoclimatic reconstructions. {T}he record indicated a rising humidity trend, reflected by a progressive increase in lacustrine productivity, in accordance to other studies carried out in the {A}mazon region concerning the {L}ate-{H}olocene, associated with a more southward displacement of the {I}ntertropical {C}onvergence {Z}one. {D}espite this rising humidity trend, dry episodic events during the {L}ate-{H}olocene were evidenced by charcoal data, also coherent with regional {A}mazon studies, albeit exhibiting increased intensity, suggesting that the transitional nature of the environment might have influenced susceptibility to fires.},
  keywords = {{A}mazon basin ; charcoal ; ecotone ; organic matter ; oxbow lake dynamics ; palaeolimnology ; {BRESIL} ; {AMAZONIE} ; {AMAZONE} {BASSIN} ; {BARRO} {PRETO} {LAC}},
  booktitle = {},
  journal = {{H}olocene},
  volume = {31},
  numero = {9},
  pages = {1417--1429},
  ISSN = {0959-6836},
  year = {2021},
  DOI = {10.1177/09596836211019091},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082316},
}