copper, lead and zinc distribution in soils and sediments of the south-western coast of the río de la plata estuary

2003 ◽  
Vol 3 (3) ◽  
pp. 213-220 ◽  
Author(s):  
María C. Camilión ◽  
Marcelo J. Manassero ◽  
Martín A. Hurtado ◽  
Alicia E. Ronco
Keyword(s):  
Western Coast ◽  
Rio De La Plata ◽  
The South ◽  
Río De La Plata ◽  
La Plata ◽  
Lead And Zinc ◽  
Soils And Sediments ◽  
Zinc Distribution ◽  
Copper Lead

Intensive fishing has not forced dietary change in the South American fur sealArctophoca(=Arctocephalus)australisoff Río de la Plata and adjoining areas

2013 ◽  
Vol 24 (6) ◽  
pp. 745-759 ◽  
Author(s):  
Damián G. Vales ◽  
Fabiana Saporiti ◽  
Luis Cardona ◽  
Larissa R. De Oliveira ◽  
Roberta A. Dos Santos ◽  
...  
Keyword(s):  
Dietary Change ◽  
South American ◽  
Rio De La Plata ◽  
The South ◽  
Río De La Plata ◽  
La Plata ◽  
Intensive Fishing

scholarly journals The basement of the Punta del Este Terrane (Uruguay): an African Mesoproterozoic fragment at the eastern border of the South American Río de La Plata craton

2010 ◽  
Vol 100 (2-3) ◽  
pp. 289-304 ◽  
Author(s):  
Miguel A. S. Basei ◽  
Elena Peel ◽  
Leda Sánchez Bettucci ◽  
Fernando Preciozzi ◽  
Allen P. Nutman
Keyword(s):  
South American ◽  
Rio De La Plata ◽  
The South ◽  
Río De La Plata ◽  
La Plata ◽  
Eastern Border

scholarly journals Variability in terrigenous sediment supply offshore of the Río de la Plata (Uruguay) recording the continental climatic history over the past 1200 years

2016 ◽  
Vol 12 (3) ◽  
pp. 623-634 ◽  
Author(s):  
Laura Perez ◽  
Felipe García-Rodríguez ◽  
Till J. J. Hanebuth
Keyword(s):  
Continental Shelf ◽  
Rio De La Plata ◽  
The South ◽  
Río De La Plata ◽  
La Plata ◽  
The Past ◽  
Element Ratios ◽  
Terrigenous Input ◽  
Freshwater Plume ◽  
Freshwater Diatom

Abstract. The continental shelf adjacent to the Río de la Plata (RdlP) exhibits extremely complex hydrographic and ecological characteristics which are of great socioeconomic importance. Since the long-term environmental variations related to the atmospheric (wind fields), hydrologic (freshwater plume), and oceanographic (currents and fronts) regimes are little known, the aim of this study is to reconstruct the changes in the terrigenous input into the inner continental shelf during the late Holocene period (associated with the RdlP sediment discharge) and to unravel the climatic forcing mechanisms behind them. To achieve this, we retrieved a 10 m long sediment core from the RdlP mud depocenter at 57 m water depth (GeoB 13813-4). The radiocarbon age control indicated an extremely high sedimentation rate of 0.8 cm per year, encompassing the past 1200 years (AD 750–2000). We used element ratios (Ti  / Ca, Fe / Ca, Ti / Al, Fe / K) as regional proxies for the fluvial input signal and the variations in relative abundance of salinity-indicative diatom groups (freshwater versus marine-brackish) to assess the variability in terrigenous freshwater and sediment discharges. Ti / Ca, Fe / Ca, Ti /  Al, Fe /  K and the freshwater diatom group showed the lowest values between AD 850 and 1300, while the highest values occurred between AD 1300 and 1850. The variations in the sedimentary record can be attributed to the Medieval Climatic Anomaly (MCA) and the Little Ice Age (LIA), both of which had a significant impact on rainfall and wind patterns over the region. During the MCA, a weakening of the South American summer monsoon system (SAMS) and the South Atlantic Convergence Zone (SACZ), could explain the lowest element ratios (indicative of a lower terrigenous input) and a marine-dominated diatom record, both indicative of a reduced RdlP freshwater plume. In contrast, during the LIA, a strengthening of SAMS and SACZ may have led to an expansion of the RdlP river plume to the far north, as indicated by higher element ratios and a marked freshwater diatom signal. Furthermore, a possible multidecadal oscillation probably associated with Atlantic Multidecadal Oscillation (AMO) since AD 1300 reflects the variability in both the SAMS and SACZ systems.

Distribution of the macrobenthic fauna of the south coastal fringe of the ‘Río de la Plata’ River (Argentine): impact of urban contamination

1998 ◽  
Vol 26 (3) ◽  
pp. 1260-1265
Author(s):  
A. Rodrigues Capítulo ◽  
I. César ◽  
M. Tassara ◽  
A. Paggi ◽  
M. Remes Lemicov
Keyword(s):  
Rio De La Plata ◽  
The South ◽  
Río De La Plata ◽  
La Plata ◽  
Macrobenthic Fauna
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