@article{fdi:010084699,
  title = {{T}he {A}mazon {R}iver plume, a barrier to animal dispersal in the {W}estern {T}ropical {A}tlantic},
  author = {{T}osetto, {E}. {G}. and {B}ertrand, {A}rnaud and {N}eumann-{L}eitao, {S}. and {N}ogueira, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he dispersal of marine organisms can be restricted by a set of isolation mechanisms including hard barriers or hydrological features. {I}n the {W}estern {A}tlantic {O}cean, the {A}mazon {R}iver discharge has been shown to act as a biogeographical barrier responsible for the differences in reef fish communities between {C}aribbean {S}ea and {N}ortheast {B}razil continental shelves. {H}ere, we compare the diversity of all {A}nimalia phyla from biogeographic ecoregions along the {T}ropical {W}estern {A}tlantic continental shelf to test the hypothesis that the {A}mazon {R}iver plume spatially structures species diversity. {F}or that, we used beta diversity estimators and multivariate ecological analysis on a database of species occurrence of the whole animal kingdom including 175,477 occurrences of 8,375 species from six ecoregions along the {W}estern {T}ropical {A}tlantic. {R}esults of the whole animal kingdom and the richest phyla showed that the {C}aribbean {S}ea and {T}ropical {B}razil ecoregions are isolated by the {A}mazon {R}iver {P}lume, broadening and confirming the hypothesis that it acts as a soft barrier to animal dispersal in the {W}estern {T}ropical {A}tlantic. {S}pecies sharing is larger northwestwards, in direction of the {C}aribbean than the opposite direction. {B}eyond species isolation due to local characteristics such as low salinity and high turbidity, our results suggest the dominant northwestward currents probably play a major role in animal dispersion: it enhances the flux of larvae and other planktonic organisms with reduced mobility from {B}razil to {C}aribbean and hinders their contrary movement. {T}hus, the {A}mazon area is a strong barrier for taxa with reduced dispersal capacity, while species of pelagic taxa with active swimming may transpose it more easily.},
  keywords = {{ATLANTIQUE} ; {BRESIL} ; {ZONE} {TROPICALE} ; {AMAZONE} {COURS} {D}'{EAU} ; {CARAIBES} {MER}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {12},
  numero = {1},
  pages = {537 [12 ]},
  ISSN = {2045-2322},
  year = {2022},
  DOI = {10.1038/s41598-021-04165-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084699},
}