@article{fdi:010061430, title = {{P}alaeoecology of a 3-kyr biosedimentary record of a coral reef-supporting carbonate shelf}, author = {{A}lmeida, {C}. {M}. and {B}arbosa, {C}. {F}. and {C}ordeiro, {R}. {C}. and {S}eoane, {J}. {C}. {S}. and {F}ermino, {G}. {M}. and {S}ilva, {P}. {O}. and {T}urcq, {B}runo}, editor = {}, language = {{ENG}}, abstract = {{T}his study assesses the 3-kyr paleoecology and sedimentary evolution of the {A}brolhos carbonate shelf, {B}ahia, {B}razil, using a two-meter-long core collected in a carbonate muddy sediment. {T}he paleoecology was based on the distribution of benthic foraminifer functional groups associated with grain size, total organic carbon ({TOC}), total nitrogen ({TN}), {C}/{N} and delta {C}-13. {T}he results identified three biosedimentary units showing that symbiont-bearing foraminifers ({P}eneroplis and {A}rchaias) decrease in abundance. {H}owever, other small taxa ({M}iliolinella and {C}ornuspira) and stress-tolerant genera ({B}olivina, {E}lphidium and {A}mmonia) increase in abundance toward the core top. {G}rain size decreases toward the top of the core, suggesting a weakening of hydrodynamic winnowing toward recent time. {T}he {TOC} and {TN} concentrations increase, and the {C}/{N} ratios decrease, suggesting an increase of marine productivity from nearby goblet-shaped structures called "chapeiroes". {C}hanges in the benthic foraminifer community can be linked to the sedimentological and organic matter input, which are the result of climatic and oceanographic variations at different spatial and time scales, thus illustrating reduced potential to support symbiont-bearing foraminifer communities to the end of the {H}olocene.}, keywords = {{B}enthic foraminifers ; {G}eochemistry ; {S}outhwest {A}tlantic ; {S}ediment ; {B}razilian margin ; {BRESIL} ; {ATLANTIQUE} {SUD} {OUEST}}, booktitle = {}, journal = {{C}ontinental {S}helf {R}esearch}, volume = {70}, numero = {{SI}}, pages = {168--176}, ISSN = {0278-4343}, year = {2013}, DOI = {10.1016/j.csr.2013.05.012}, URL = {https://www.documentation.ird.fr/hor/fdi:010061430}, }