Publication: Erosión costera en un humedal intermareal vinculada al desarrollo urbanístico de la localidad de Punta Indio, Buenos Aires
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Instituto de Hidrología de Llanuras
Abstract
Los humedales poseen relevancia tanto por los recursos y funciones ecológicas que aportan a la sociedad como por la biodiversidad que albergan. En la localidad de Punta Indio, Buenos Aires, se desarrolla en el sector costero un humedal intermareal que se extiende paralelo a la margen del río, no obstante en la actualidad se observan sectores donde su área se ve disminuida. El objetivo del trabajo fue identificar áreas donde la erosión costera afecta el desarrollo del humedal y plantear las posibles causas que la generan. Para ello se efectuó un análisis multitemporal a partir de fotografías aéreas e imágenes satelitales. Un retroceso en la línea de costa se evidencia principalmente en las zonas de desarrollo urbano el cual podría deberse a la eliminación de la vegetación y generación de balnearios. Los resultados obtenidos constituyen un estudio preliminar para generar pautas de ordenamiento territorial que tiendan a preservar el humedal.
The wetlands play a relevant role in the coastal systems as their physical and ecological functions, biodiversity, and resources for humankind. In Punta Indio, Buenos Aires, the intertidal wetlands, which developed parallel to the embankment of the Rio de La Plata, show evidence of recent significant reduction in the areal extent. This study is aimed to detect where erosion is seriously affecting the wetland environment and to identify the causes of this process. An analysis of the coastline dynamics and land use changes has been performed by comparing multi-temporal series of aerial photographs and satellite images. Result point outs a significant correlation between the coastline retreats and sectors where recent human interventions, generally associated to wetland vegetation cutting, have been done, i.e. urban development and construction of beaches. This study provides some suitable information to the model for the sustainable land use and for the preservation of the wetland environments.
The wetlands play a relevant role in the coastal systems as their physical and ecological functions, biodiversity, and resources for humankind. In Punta Indio, Buenos Aires, the intertidal wetlands, which developed parallel to the embankment of the Rio de La Plata, show evidence of recent significant reduction in the areal extent. This study is aimed to detect where erosion is seriously affecting the wetland environment and to identify the causes of this process. An analysis of the coastline dynamics and land use changes has been performed by comparing multi-temporal series of aerial photographs and satellite images. Result point outs a significant correlation between the coastline retreats and sectors where recent human interventions, generally associated to wetland vegetation cutting, have been done, i.e. urban development and construction of beaches. This study provides some suitable information to the model for the sustainable land use and for the preservation of the wetland environments.