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<p>The Parana river delta is a complex of wetlands and river systems amidst agricultural fields and urban areas in Buenos Aires, Argentina. The Buenos Aires delta correspond to an area within the lower region of the Parana river delta. A thorough investigation in this area of the water quality parameters was undertaken to determinate an accurate, updated map of pollutant concentrations and its temporal fluctuations. Accordantly, seasonal sampling was conducted at various sites with different hydrological regimes within this area. Physical, chemical and metal concentrations were noticeably high while pesticides bioavailability varied seasonally among sites. The results provided valuable insights into the extent of contamination in the Buenos Aires delta and how the temporal variations in metals and pesticides concentrations were contingent on both the magnitude of anthropogenic activity and the hydrological regime (water level, tides and <i>sudestada</i>) associated with local climate events. The present study permits a more efficient evaluation of environmental impacts in this biodiverse ecosystem under such dynamic spatial and temporal water patterns.</p>

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The influence of hydro-meteorological phenomena on pollutant bioavailability in the Parana river delta

  • 期刊论文

  • 发表日期：

    2026年3月28日

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  • Tatiana Noya Abad,
  • Julieta Peluso,
  • Henrique Knack de Almeida,
  • Yanina Susana Minaberry,
  • Dante Rojas,
  • Diego Cristos,
  • Carolina Mariel Aronzon,
  • Javier Ángel Calcagno,
  • Sebastián Eduardo Sabatini

摘要

The Parana river delta is a complex of wetlands and river systems amidst agricultural fields and urban areas in Buenos Aires, Argentina. The Buenos Aires delta correspond to an area within the lower region of the Parana river delta. A thorough investigation in this area of the water quality parameters was undertaken to determinate an accurate, updated map of pollutant concentrations and its temporal fluctuations. Accordantly, seasonal sampling was conducted at various sites with different hydrological regimes within this area. Physical, chemical and metal concentrations were noticeably high while pesticides bioavailability varied seasonally among sites. The results provided valuable insights into the extent of contamination in the Buenos Aires delta and how the temporal variations in metals and pesticides concentrations were contingent on both the magnitude of anthropogenic activity and the hydrological regime (water level, tides and sudestada) associated with local climate events. The present study permits a more efficient evaluation of environmental impacts in this biodiverse ecosystem under such dynamic spatial and temporal water patterns.