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Reconstructing nutrient fluxes (C,N,P) to the Santa Catarina Bay (SCB) during last century through high-resolution sedimentary proxies and 210Pb dating. The fluxes and stable isotopes (δ13C, δ15N) showed clear relationship… Click to show full abstract
Reconstructing nutrient fluxes (C,N,P) to the Santa Catarina Bay (SCB) during last century through high-resolution sedimentary proxies and 210Pb dating. The fluxes and stable isotopes (δ13C, δ15N) showed clear relationship with population growth and silting of rivers. The SCB central zone experienced gradual change from mesotrophic towards eutrophic conditions while the littoral zone showed rapid change, since the 1960s, probably caused by channelization and posterior dredging of rivers. 210Pb influx at sediment–water interface highest in the central zone pointed to 222Rn transport by Hadley and Ferrel cells, suggesting that atmospheric supply was related to mid-latitudes of South Atlantic Central Waters.
Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Year Published: 2017
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