Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina

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The Paraná River Delta Region is a huge mosaic of wetlands which covers 17,000 km 2 at the final portion of the Del Plata Basin in Argentina. This paper focuses on a brief review about how different sensors and a multi-scale approach bring insight on structural and functional features of wetlands, f...

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Autores principales: Kandus, P., Karszenbaum, H., Salvia, M., Gonzalez Trilla, G., Pratolongo, P., Grings, F.M., Zoffoli, L., Ferrazzoli, P.
Formato: CONF
Materias:
Image analysis
Rivers
Satellite imagery
Vegetation
Wetlands
Thematic Mapper images
Tidal marshes
Wide Swath Modes (WSM)
Sensors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03796566_v_nSP-634_p_Kandus
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03796566_v_nSP-634_p_Kandus
record_format dspace
spelling todo:paper_03796566_v_nSP-634_p_Kandus2023-10-03T15:33:38Z Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina Kandus, P. Karszenbaum, H. Salvia, M. Gonzalez Trilla, G. Pratolongo, P. Grings, F.M. Zoffoli, L. Ferrazzoli, P. Image analysis Rivers Satellite imagery Vegetation Wetlands Thematic Mapper images Tidal marshes Wide Swath Modes (WSM) Sensors The Paraná River Delta Region is a huge mosaic of wetlands which covers 17,000 km 2 at the final portion of the Del Plata Basin in Argentina. This paper focuses on a brief review about how different sensors and a multi-scale approach bring insight on structural and functional features of wetlands, from regional to a specific ecosystem level in a top-down/botton-up approach. At broad scale, ENVISAT Wide Swath Mode (WSM) imagery along with optical SACC-MMRS and the last two decades of Normalized Vegetation Index (NDVI) time series of NOAA-AVHRR satellite systems were used to analyze landscape heterogeneity and wetland functioning in the whole region. The influence of "E1 Niño" flooding events was evaluated in different wetland landscape units. At fine scale, on the Lower Delta, detailed maps were produced using six Landsat Thematic Mapper images obtaining 28 wetland cover classes with an accuracy assessment of approximately 83%. In this region, special attention has also been given to the study of freshwater tidal marshes dominated by Scirpus giganteus. This marsh covers more than 40% of the Lower Delta surface, in the upper portion of the Del Plata Estuary. Net aboveground primary production (NAPP) field measurements were calibrated with NDVI derived from Landsat ETM+ surface reflectance values resulting in the first map of NAPP for the delta marshes. We also addressed the subject of ENVISAT ASAR imagery detecting aboveground biomass variations and water below the canopy. Fil:Kandus, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Karszenbaum, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Salvia, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gonzalez Trilla, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pratolongo, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Grings, F.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Zoffoli, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CONF info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03796566_v_nSP-634_p_Kandus
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Image analysis
Rivers
Satellite imagery
Vegetation
Wetlands
Thematic Mapper images
Tidal marshes
Wide Swath Modes (WSM)
Sensors
spellingShingle Image analysis
Rivers
Satellite imagery
Vegetation
Wetlands
Thematic Mapper images
Tidal marshes
Wide Swath Modes (WSM)
Sensors
Kandus, P.
Karszenbaum, H.
Salvia, M.
Gonzalez Trilla, G.
Pratolongo, P.
Grings, F.M.
Zoffoli, L.
Ferrazzoli, P.
Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
topic_facet Image analysis
Rivers
Satellite imagery
Vegetation
Wetlands
Thematic Mapper images
Tidal marshes
Wide Swath Modes (WSM)
Sensors
description The Paraná River Delta Region is a huge mosaic of wetlands which covers 17,000 km 2 at the final portion of the Del Plata Basin in Argentina. This paper focuses on a brief review about how different sensors and a multi-scale approach bring insight on structural and functional features of wetlands, from regional to a specific ecosystem level in a top-down/botton-up approach. At broad scale, ENVISAT Wide Swath Mode (WSM) imagery along with optical SACC-MMRS and the last two decades of Normalized Vegetation Index (NDVI) time series of NOAA-AVHRR satellite systems were used to analyze landscape heterogeneity and wetland functioning in the whole region. The influence of "E1 Niño" flooding events was evaluated in different wetland landscape units. At fine scale, on the Lower Delta, detailed maps were produced using six Landsat Thematic Mapper images obtaining 28 wetland cover classes with an accuracy assessment of approximately 83%. In this region, special attention has also been given to the study of freshwater tidal marshes dominated by Scirpus giganteus. This marsh covers more than 40% of the Lower Delta surface, in the upper portion of the Del Plata Estuary. Net aboveground primary production (NAPP) field measurements were calibrated with NDVI derived from Landsat ETM+ surface reflectance values resulting in the first map of NAPP for the delta marshes. We also addressed the subject of ENVISAT ASAR imagery detecting aboveground biomass variations and water below the canopy.
format CONF
author Kandus, P.
Karszenbaum, H.
Salvia, M.
Gonzalez Trilla, G.
Pratolongo, P.
Grings, F.M.
Zoffoli, L.
Ferrazzoli, P.
author_facet Kandus, P.
Karszenbaum, H.
Salvia, M.
Gonzalez Trilla, G.
Pratolongo, P.
Grings, F.M.
Zoffoli, L.
Ferrazzoli, P.
author_sort Kandus, P.
title Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
title_short Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
title_full Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
title_fullStr Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
title_full_unstemmed Multiscale-multisensor approach in studying wetlands of the Paraná river Delta Region in Argentina
title_sort multiscale-multisensor approach in studying wetlands of the paraná river delta region in argentina
url http://hdl.handle.net/20.500.12110/paper_03796566_v_nSP-634_p_Kandus
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