@article{fdi:010093532,
  title = {{D}ecadal variability and anthropogenic influence on trace element dynamics in the {B}ay of {B}engal : evidence from high-resolution coral records},
  author = {{R}ahman, {M}. {H}. and {C}hen, {T}. {R}. and {Y}easmin, {S}. {M}. and {L}in, {Y}. {Y}. and {Z}hao, {J}. {X}. and {P}apa, {F}abrice and {K}han, {M}. {H}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {B}ay of {B}engal ({B}o{B}) exhibits dynamic trace element ({TE}) chemistry shaped by a complex interplay of natural processes and anthropogenic influences. {D}espite its significance, the temporal variability of {TE}s in this region is poorly understood. {T}his study investigates decadal (2011-2022) {TE} dynamics by analyzing trace element-tocalcium ratios ({TE}s/{C}a: {B}/{C}a, {M}n/{C}a, {F}e/{C}a, {B}a/{C}a, {P}/{C}a, {A}s/{C}a, {Z}n/{C}a, {C}d/{C}a, and {S}n/{C}a) and strontiumto-calcium ({S}r/{C}a) ratios in modern {P}orites corals, supplemented by data from a sub-fossil coral as a benchmark. {T}he results reveal distinct seasonal cycles in {B}/{C}a, {S}r/{C}a, and {B}a/{C}a, with {B}/{C}a and {S}r/{C}a being predominantly controlled by sea surface temperature ({SST}), while {B}a/{C}a variability is influenced by terrestrial inputs associated with river discharge. {B}/{C}a has been validated as a reliable {SST} proxy for riverine runoffinfluenced {B}o{B}. {E}levated {F}e/{C}a, {M}n/{C}a, and {A}s/{C}a ratios are associated with anthropogenic activities, such as the construction of significant infrastructure projects (e.g., {P}adma {M}ultipurpose {B}ridge, {P}ayra {S}ea {P}ort, and {M}atarbari {D}eep {S}ea {P}ort) and the establishment of the {R}ohingya refugee camp. {A}dditionally, increases in {P}/{C}a, {Z}n/{C}a, and {C}d/{C}a reflect intensified fertilizer use, whereas rising {S}n/{C}a levels suggest inputs from antifouling agents, pesticides, and tourism. {P}rincipal component analysis combined with multiple linear regression ({PCAMLR}) indicates that anthropogenic activities account for approximately 70 % of the {TE} variability. {T}hese findings underscore the significant role of human activities in altering the {TE} dynamics in the {B}o{B}, providing valuable insights for coastal management and pollution mitigation strategies in similarly impacted regions worldwide.},
  keywords = {{C}oral records ; {T}race elements ; {D}ecadal changes ; {A}nthropogenic impacts ; {T}he {B}ay of {B}engal ; {BANGLADESH} ; {GOLFE} {DU} {BENGALE} ; {SAINT} {MARTINS} {ISLAND}},
  booktitle = {},
  journal = {{E}nvironmental {R}esearch},
  volume = {279},
  numero = {1},
  pages = {121828 [12 p.]},
  ISSN = {0013-9351},
  year = {2025},
  DOI = {10.1016/j.envres.2025.121828},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093532},
}