@article{fdi:010090184, title = {{M}ercury biomagnification and trophic structure patterns in neotropical coastal estuaries impacted by a {C}hlor-alkali plant in northeast {B}razil}, author = {{V}iana, {A}. {P}. and {L}e {L}oc'h, {F}ran{\c{c}}ois and {F}redou, {T}. and {L}ucena-{F}redou, {F}. and {M}{\'e}nard, {F}r{\'e}d{\'e}ric and {L}agane, {C}hristelle and {M}unaron, {J}ean-{M}arie and {L}ira, {A}. {S}. and dos {S}antos, {I}. {G}. {S}. and {F}erreira, {V}. and {G}onzalez, {J}. {G}. and {P}oint, {D}avid}, editor = {}, language = {{ENG}}, abstract = {{T}he present study reports the concentration of {H}g{T} and {M}e{H}g in sediments and food webs in estuarine and coastal areas of {N}ortheast {B}razil, which have been subject to different impacts, mainly by chlorine and alkali companies. {T}he results showed that the {H}g{T} in the sediment varied from 1.7 to 1186 ng g(-1) and from 3.3 to 2163 ng g(-1) in the organisms. {A} strong positive relationship between the levels of {H}g in the sediment and the organisms was detected. {M}ethylmercury represented 42 to 99% in the muscles of fish and invertebrates. {B}iomagnification processes were identified for all study areas evaluated according the trophic magnification factor ({TMF}), which ranged from 3.1 to 12.3. {W}e found significant negative correlations with delta {C}-13 values and mercury concentrations and positive correlations between delta {N}-15 values and mercury, typical of {H}g trophodynamics. {T}his suggests a direct impact of the level of site-specific contamination on local food web and the ecosystem, making continuous monitoring studies necessary to assess food security and the risks that the riverine community is exposed as a result of ingesting mercury contaminated fish.}, keywords = {{F}ish ; {I}nvertebrate ; {S}ediment ; {M}ethylmercury ; {B}iomagnification factor ; {W}ater contamination ; {BRESIL} ; {PERNAMBUCO}}, booktitle = {}, journal = {{R}egional {S}tudies in {M}arine {S}cience}, volume = {66}, numero = {}, pages = {103105 [12 p.]}, ISSN = {2352-4855}, year = {2023}, DOI = {10.1016/j.rsma.2023.103105}, URL = {https://www.documentation.ird.fr/hor/fdi:010090184}, }