Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments
This work presents the 210Pb geochronology of seven bottom sediment cores, collected in three floodplain lakes located in the area of the middle Taquari River, Pantanal, Brazil. In five of them, a significant increase in the sediment mass deposition rate was observed, reflecting an increase of the sediment input to the Pantanal. Additionally, in order to validate the 210Pb results, the mercury content was determined for two sediment cores, showing that despite a constant concentration, the flux of Hg has increased due to an increase in the mass sedimentation rate. This increase can be attributed to the expansion of agricultural activity in the upper Taquari River during the last 25 years.
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Sociedade Brasileira de Química
2002
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oai:scielo:S0103-505320020001000112002-06-20Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake SedimentsGodoy,José M.Padovani,Carlos R.Guimarães,Jean R. D.Pereira,José C. A.Vieira,Luis M.Carvalho,Zenildo L.Galdino,Sergio sediment dating 210Pb Brazil Hg erosion This work presents the 210Pb geochronology of seven bottom sediment cores, collected in three floodplain lakes located in the area of the middle Taquari River, Pantanal, Brazil. In five of them, a significant increase in the sediment mass deposition rate was observed, reflecting an increase of the sediment input to the Pantanal. Additionally, in order to validate the 210Pb results, the mercury content was determined for two sediment cores, showing that despite a constant concentration, the flux of Hg has increased due to an increase in the mass sedimentation rate. This increase can be attributed to the expansion of agricultural activity in the upper Taquari River during the last 25 years.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.13 n.1 20022002-02-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100011en10.1590/S0103-50532002000100011 |
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Godoy,José M. Padovani,Carlos R. Guimarães,Jean R. D. Pereira,José C. A. Vieira,Luis M. Carvalho,Zenildo L. Galdino,Sergio |
| spellingShingle |
Godoy,José M. Padovani,Carlos R. Guimarães,Jean R. D. Pereira,José C. A. Vieira,Luis M. Carvalho,Zenildo L. Galdino,Sergio Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| author_facet |
Godoy,José M. Padovani,Carlos R. Guimarães,Jean R. D. Pereira,José C. A. Vieira,Luis M. Carvalho,Zenildo L. Galdino,Sergio |
| author_sort |
Godoy,José M. |
| title |
Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| title_short |
Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| title_full |
Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| title_fullStr |
Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| title_full_unstemmed |
Evaluation of the Siltation of River Taquari, Pantanal, Brazil, through 210Pb Geochronology of Floodplain Lake Sediments |
| title_sort |
evaluation of the siltation of river taquari, pantanal, brazil, through 210pb geochronology of floodplain lake sediments |
| description |
This work presents the 210Pb geochronology of seven bottom sediment cores, collected in three floodplain lakes located in the area of the middle Taquari River, Pantanal, Brazil. In five of them, a significant increase in the sediment mass deposition rate was observed, reflecting an increase of the sediment input to the Pantanal. Additionally, in order to validate the 210Pb results, the mercury content was determined for two sediment cores, showing that despite a constant concentration, the flux of Hg has increased due to an increase in the mass sedimentation rate. This increase can be attributed to the expansion of agricultural activity in the upper Taquari River during the last 25 years. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2002 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000100011 |
| work_keys_str_mv |
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