Coupling fallout 210Pb and stables isotopes (δ13C, δ15N) for catchment urbanization reconstruction in southeastern coastal zone of Brazil

被引：9

作者：

Cerda, Mauricio ^{[1
,2
]}

Scali, Camila ^{[3
]}

Valdes, Jorge ^{[1
]}

Macario, Kita Damasio ^{[3
,4
]}

dos Anjos, Roberto Meigikos ^{[3
,4
]}

Vogel, Vinicius ^{[3
]}

Lamego, Fernando ^{[3
,5
]}

Nepomuceno, Aguinaldo ^{[3
]}

机构：

[1] Univ Antofagasta, Inst Alexander von Humboldt, Lab Sedimentol & Paleoambientes LASPAL,IRD UFF UA, Fac Ciencias Mar & Recursos Biol,LMI,PALEOTRACES, Casilla 170, Antofagasta, Chile

[2] Univ Santo Tomas, Fac Ciencias, CiiCC, Santiago, Chile

[3] Univ Fed Fluminense PBMAC UFF, Programa Biol Marinha & Ambientes Costeiros, Niteroi, RJ, Brazil

[4] Univ Fed Fluminense, Inst Fis, Ave Gal Milton Tavares de Souza S-N, BR-24210346 Niteroi, RJ, Brazil

[5] CNEN, IEN, Ilha Fundao, R Helio de Almeida 75, Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 310卷 / 03期

关键词：

Eutrophication; Nutrient fluxes; Pb-210; dating; Sedimentary records; Population growth; ORGANIC-MATTER; BALTIC SEA; SEDIMENTS; CARBON; NITROGEN; BAY; ESTUARY; WATER; EUTROPHICATION; GUANABARA;

D O I：

10.1007/s10967-016-4876-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Eutrophication history was reconstructed by bulk organic and inorganic proxies (C, N, P) and isotope (delta C-13 and delta N-15) analysis constrained by geochronological model derived from fallout Pb-210 in Brazilian coastal lagoon. The sedimentary record spanning the last four decades showed impact of urbanization starting from 1970s. These changes were marked by increase of TN, TP, IP fluxes that were significantly correlated with population growth. Significant covariation of C:N, MDP and delta N-15 along age-depth profiles provided linkage with sedimentation rates, serving as an independent time marker for geochronology and validating use of Pb-210 dating model based on constant initial concentration.

引用

页码：1021 / 1032

页数：12

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