@article{fdi:010092234, title = {{T}he biogeography of the {A}mazonian tree flora}, author = {{L}uize, {B}. {G}. and {T}uomisto, {H}. and {E}kelschot, {R}. and {D}exter, {K}. {G}. and do {A}maral, {I}. {L}. and {C}oelho, {L}. {D}. and {M}atos, {F}. {D}. {D}. and {L}ima, {D}. {D}. and {S}alomao, {R}. {P}. and {W}ittmann, {F}. and {C}astilho, {C}. and {C}arim, {M}. {D}. {V}. and {G}uevara, {J}. {E}. and {P}hillips, {O}. {L}. and {M}agnusson, {W}. {E}. and {S}abatier, {D}aniel and {R}evilla, {J}. {D}. {C}. and {M}olino, {J}ean-{F}ran{\c{c}}ois and {I}rume, {M}. {V}. and {M}artins, {M}. {P}. and {G}uimaraes, {J}. {R}. {D}. and {R}amos, {J}. {F}. and {B}ánki, {O}. {S}. and {P}iedade, {M}. {T}. {F}. and {L}ópez, {D}. {C}. and {P}itman, {N}. {C}. {A}. and {D}emarchi, {L}. {O}. and {S}ch{\¨o}ngart, {J}. and {N}ovo, {E}mmd and {V}argas, {P}. {N}. and {S}ilva, {T}. {S}. {F}. and {V}enticinque, {E}. {M}. and {M}anzatto, {A}. {G}. and {R}eis, {N}. {F}. {C}. and {T}erborgh, {J}. and {C}asula, {K}. {R}. and {C}oronado, {E}. {N}. {H}. and {M}endoza, {A}. {M}. and {M}ontero, {J}. {C}. and {C}osta, {F}. {R}. {C}. and {F}eldpausch, {T}. {R}. and {Q}uaresma, {A}. {C}. and {A}rboleda, {N}. {C}. and {Z}artman, {C}. {E}. and {K}illeen, {T}. {J}. and {M}arimon, {B}. {S}. and {M}arimon, {B}. and {V}asquez, {R}. and {M}ostacedo, {B}. and {A}ssis, {R}. {L}. and {B}araloto, {C}. and do {A}maral, {D}. {D}. and {E}ngel, {J}ulien and et al.}, editor = {}, language = {{ENG}}, abstract = {{W}e describe the geographical variation in tree species composition across {A}mazonian forests and show how environmental conditions are associated with species turnover. {O}ur analyses are based on 2023 forest inventory plots (1ha) that provide abundance data for a total of 5188 tree species. {W}ithin-plot species composition reflected both local environmental conditions (especially soil nutrients and hydrology) and geographical regions. {A} broader-scale view of species turnover was obtained by interpolating the relative tree species abundances over {A}mazonia into 47,441 0.1-degree grid cells. {T}wo main dimensions of spatial change in tree species composition were identified. {T}he first was a gradient between western {A}mazonia at the {A}ndean forelands (with young geology and relatively nutrient-rich soils) and central-eastern {A}mazonia associated with the {G}uiana and {B}razilian {S}hields (with more ancient geology and poor soils). {T}he second gradient was between the wet forests of the northwest and the drier forests in southern {A}mazonia. {I}solines linking cells of similar composition crossed major {A}mazonian rivers, suggesting that tree species distributions are not limited by rivers. {E}ven though some areas of relatively sharp species turnover were identified, mostly the tree species composition changed gradually over large extents, which does not support delimiting clear discrete biogeographic regions within {A}mazonia.}, keywords = {{AMAZONIE}}, booktitle = {}, journal = {{C}ommunications {B}iology}, volume = {7}, numero = {1}, pages = {1240 [15 ]}, year = {2024}, DOI = {10.1038/s42003-024-06937-5}, URL = {https://www.documentation.ird.fr/hor/fdi:010092234}, }