INVESTIGADORES
GARCIA Ignacio Daniel
congresos y reuniones científicas
Título:
LA PUESTA EN VALOR DE LOS SERVICIOS ECOSISTÉMICOS QUE OFRECEN LOS ARROYOS DE LLANURA COMO UNA MEDIDA DE MITIGACIÓN DE LAS INUNDACIONES: EL CASO DEL AO DEL GATO EN EL PARTIDO DE LA PLATA
Autor/es:
GÓMEZ NORA; RODRIGUES CAPÍTULO ALBERTO; COLAUTTI DARÍO; MARIÑELARENA ALEJANDRO; LICURSI MAGDALENA; COCHERO JOAQUÍN; ARMENDARIZ LAURA; MAROÑAS MIRIAM; DONADELLI JORGE; JENSEN ROBERTO; GARCÍA DE SOUZA J; MAIZTEGUI TOMÁS; IGNACIO D. GARCIA; SATHICQ MARÍA BELÉN; SUAREZ JIMENA; CORTESE BIANCA
Lugar:
Ciudad Autónoma de Buenos Aires
Reunión:
Congreso; VIII EMEAP; 2015
Institución organizadora:
Instituto de Investigaciones en Producción Animal (INPA-UBA-CONICET)
Resumen:
Hydrological ecosystem services involve the regulation of water flows, the reduction of the floodingimpact, the soil erosion and the sediment accumulation in the watercourses, also including themaintenance and improvement of the water quality, the aquiferous recharge and the aquatichabitats. The impermeability of the soil due to urbanization, the acceleration of drainings, thebuilding of obstacles to the water flow in streams and rivers together with pollution are recognizedas the main causes contributing to magnify the consequences of storms in urban and suburban areas.With the aim of showing the consequences of this type of interferences and the lossesin services andgoods of the Pampean plain water flows, the case of the Gato stream is here explained. Its basin isinhabited by over 400,000 people, with approximately 50% of urbanized area and a deficientdrainage system. The occupation of the alluvial valley and the lack of an integral plan for floodingrisks are acknowleged as the main causes for the recurrent floods in this basin. The extremeexpression of these events was observed on 2nd and 3rd April, 2013, as a consequence of ameteorological phenomenon which reached over 301 mm of water in four hours with an averageintensity of 100.3 mm/h, causing the death of 89 people and over 2200 evacuated people togetherwith an immense material loss. A study carried out in three areas of the basin, in order to identifythe main causes that reduce the ecological quality of the stream, revealed that in sectors of the midand low basin there is a deficient water quality with habitat destruction and the consequent loss ofbiodiversity. On the other hand, a detailed analysis of a fluvial overflow swamp, located on theupper basin, demonstrated the capacity of these areas of the basin which contribute to theimprovement of water quality functioning as green filters and generating a proper environment tohost diverse flora and fauna. They also retain water during storms and favor the regulation of theincrease of the downstream flow contributing to alleviate the effects of floods. The review of thedraining management techniques of the basin is essential. It is, therefore, necessary to count withthe integral knowledge of the structure and functioning of the different areas of the basin. It is alsovery important to make the population aware of the necessity of their contribution, in order toregain the ecosystem services which have been partially or completely lost.