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Spatiotemporal characteristics of physical responses of lakes to external and environmental changes are still largely unknown due to the consistent lack of monitoring of water level and corresponding changes in water storage in lakes. Understanding these changes is a fundamental step in advancing regional management of natural and anthropogenic systems that depend on the water resources of lakes. As an illustrative example, we here report a case study involving lakes of the headwater topical Andes mountain range, which, despite guaranteeing water security to millions of downstream inhabitants, still remain significantly ungauged. We present a novel evaluation of the potential of Differential Interferometric Synthetic Aperture Radar DInSAR techniques for the spatiotemporal analysis of patterns of water level change in lakes such as the ones comprising these ungauged high-altitude lake systems. Time series of Sentinel-1B data for the years 2017 and 2018 were used to generate continuous interferograms representing water level changes in twenty-four lakes of the Cajas National Park, Ecuador. The relation of these water level changes with climatic and topographical factors were analyzed to validate the methodology, and determine any patterns of change and response to climatic drivers. We found relatively high Pearson correlation coefficients between regional precipitation and water level change as estimated from the interferograms. Furthermore, we found an important negative relationship between water level change, as obtained from the DInSAR phase, and lake surface area. The study revealed a spatial trend of this correlation in terms of the altitude of the lakes at the basin scale; that is, lower correlation values were found in the headers of the basins, whilst higher correlation values were found at lower basin altitudes. The results of the present study demonstrate the potential of DInSAR techniques based on Sentinel-1 data for the monitoring of hydrologic changes in open water surfaces, and the possible validation of the DInSAR results with precipitation when gauged water level data is missing. These results are a basis to propose monitoring strategies in ungauged high-altitude lake systems in regions with similar data gauging constraints. Future work will encompass the integration of ongoing water level gauging for further validation of the herein depicted lake water level estimation approach.
Sebastián Palomino-Ángel; Raúl F. Vázquez; Henrietta Hampel; Jesús A. Anaya-Acevedo; Pablo V. Mosquera; Fernando Jaramillo. Spatiotemporal change of water level in ungauged high-altitude tropical lakes: a DInSAR approach. 2021, 1 .
AMA StyleSebastián Palomino-Ángel, Raúl F. Vázquez, Henrietta Hampel, Jesús A. Anaya-Acevedo, Pablo V. Mosquera, Fernando Jaramillo. Spatiotemporal change of water level in ungauged high-altitude tropical lakes: a DInSAR approach. . 2021; ():1.
Chicago/Turabian StyleSebastián Palomino-Ángel; Raúl F. Vázquez; Henrietta Hampel; Jesús A. Anaya-Acevedo; Pablo V. Mosquera; Fernando Jaramillo. 2021. "Spatiotemporal change of water level in ungauged high-altitude tropical lakes: a DInSAR approach." , no. : 1.
Tropical forests are disappearing at unprecedented rates, but the drivers behind this transformation are not always clear. This limits the decision-making processes and the effectiveness of forest management policies. In this paper, we address the extent and drivers of deforestation of the Choco biodiversity hotspot, which has not received much scientific attention despite its high levels of plant diversity and endemism. The climate is characterized by persistent cloud cover which is a challenge for land cover mapping from optical satellite imagery. By using Google Earth Engine to select pixels with minimal cloud content and applying a random forest classifier to Landsat and Sentinel data, we produced a wall-to-wall land cover map, enabling a diagnosis of the status and drivers of forest loss in the region. Analyses of these new maps together with information from illicit crops and alluvial mining uncovered the pressure over intact forests. According to Global Forest Change (GFC) data, 2324 km2 were deforested in this area from 2001 to 2018, reaching a maximum in 2016 and 2017. We found that 68% of the area is covered by broadleaf forests (67,473 km2) and 15% by shrublands (14,483 km2), the latter with enormous potential to promote restoration projects. This paper provides a new insight into the conservation of this exceptional forest with a discussion of the drivers of forest loss, where illicit crops and alluvial mining were found to be responsible for 60% of forest loss.
Jesús A. Anaya; Víctor H. Gutiérrez-Vélez; Ana M. Pacheco-Pascagaza; Sebastián Palomino-Ángel; Natasha Han; Heiko Balzter. Drivers of Forest Loss in a Megadiverse Hotspot on the Pacific Coast of Colombia. Remote Sensing 2020, 12, 1235 .
AMA StyleJesús A. Anaya, Víctor H. Gutiérrez-Vélez, Ana M. Pacheco-Pascagaza, Sebastián Palomino-Ángel, Natasha Han, Heiko Balzter. Drivers of Forest Loss in a Megadiverse Hotspot on the Pacific Coast of Colombia. Remote Sensing. 2020; 12 (8):1235.
Chicago/Turabian StyleJesús A. Anaya; Víctor H. Gutiérrez-Vélez; Ana M. Pacheco-Pascagaza; Sebastián Palomino-Ángel; Natasha Han; Heiko Balzter. 2020. "Drivers of Forest Loss in a Megadiverse Hotspot on the Pacific Coast of Colombia." Remote Sensing 12, no. 8: 1235.
The authors wish to make the following correction to this paper
Fernando Jaramillo; Amanda Desormeaux; Johanna Hedlund; James W. Jawitz; Nicola Clerici; Luigi Piemontese; Jenny Alexandra Rodríguez-Rodriguez; Jesús Adolfo Anaya; Juan F. Blanco-Libreros; Sonia Borja; Jorge Celi; Sergey Chalov; Kwok Pan Chun; Matilda Cresso; Georgia Destouni; Shimelis Behailu Dessu; Giuliano Di Baldassarre; Andrea Downing; Luisa Espinosa; Navid Ghajarnia; Pierre Girard; Álvaro G. Gutiérrez; Amy Hansen; Tengfei Hu; Jerker Jarsjö; Zahra Kalantari; Adnane Labbaci; Lucia Licero-Villanueva; John Livsey; Ewa Machotka; Kathryn McCurley; Sebastián Palomino-Ángel; Jan Pietron; René Price; Sorain J. Ramchunder; Constanza Ricaurte-Villota; Luisa Fernanda Ricaurte; Lula Dahir; Erasmo Rodríguez; Jorge Salgado; A. Britta K. Sannel; Ana Carolina Santos; Samaneh Seifollahi-Aghmiuni; Ylva Sjöberg; Lian Sun; Josefin Thorslund; Guillaume Vigouroux; Lan Wang-Erlandsson; Diandian Xu; David Zamora; Alan D. Ziegler; Imenne Åhlén. Correction: Jaramillo, F.; et al. Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands. Water 2019, 11, 619. Water 2019, 12, 88 .
AMA StyleFernando Jaramillo, Amanda Desormeaux, Johanna Hedlund, James W. Jawitz, Nicola Clerici, Luigi Piemontese, Jenny Alexandra Rodríguez-Rodriguez, Jesús Adolfo Anaya, Juan F. Blanco-Libreros, Sonia Borja, Jorge Celi, Sergey Chalov, Kwok Pan Chun, Matilda Cresso, Georgia Destouni, Shimelis Behailu Dessu, Giuliano Di Baldassarre, Andrea Downing, Luisa Espinosa, Navid Ghajarnia, Pierre Girard, Álvaro G. Gutiérrez, Amy Hansen, Tengfei Hu, Jerker Jarsjö, Zahra Kalantari, Adnane Labbaci, Lucia Licero-Villanueva, John Livsey, Ewa Machotka, Kathryn McCurley, Sebastián Palomino-Ángel, Jan Pietron, René Price, Sorain J. Ramchunder, Constanza Ricaurte-Villota, Luisa Fernanda Ricaurte, Lula Dahir, Erasmo Rodríguez, Jorge Salgado, A. Britta K. Sannel, Ana Carolina Santos, Samaneh Seifollahi-Aghmiuni, Ylva Sjöberg, Lian Sun, Josefin Thorslund, Guillaume Vigouroux, Lan Wang-Erlandsson, Diandian Xu, David Zamora, Alan D. Ziegler, Imenne Åhlén. Correction: Jaramillo, F.; et al. Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands. Water 2019, 11, 619. Water. 2019; 12 (1):88.
Chicago/Turabian StyleFernando Jaramillo; Amanda Desormeaux; Johanna Hedlund; James W. Jawitz; Nicola Clerici; Luigi Piemontese; Jenny Alexandra Rodríguez-Rodriguez; Jesús Adolfo Anaya; Juan F. Blanco-Libreros; Sonia Borja; Jorge Celi; Sergey Chalov; Kwok Pan Chun; Matilda Cresso; Georgia Destouni; Shimelis Behailu Dessu; Giuliano Di Baldassarre; Andrea Downing; Luisa Espinosa; Navid Ghajarnia; Pierre Girard; Álvaro G. Gutiérrez; Amy Hansen; Tengfei Hu; Jerker Jarsjö; Zahra Kalantari; Adnane Labbaci; Lucia Licero-Villanueva; John Livsey; Ewa Machotka; Kathryn McCurley; Sebastián Palomino-Ángel; Jan Pietron; René Price; Sorain J. Ramchunder; Constanza Ricaurte-Villota; Luisa Fernanda Ricaurte; Lula Dahir; Erasmo Rodríguez; Jorge Salgado; A. Britta K. Sannel; Ana Carolina Santos; Samaneh Seifollahi-Aghmiuni; Ylva Sjöberg; Lian Sun; Josefin Thorslund; Guillaume Vigouroux; Lan Wang-Erlandsson; Diandian Xu; David Zamora; Alan D. Ziegler; Imenne Åhlén. 2019. "Correction: Jaramillo, F.; et al. Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands. Water 2019, 11, 619." Water 12, no. 1: 88.
Floodplain water flows have large volumetric flowrates and high complexity in space and time that are difficult to understand using water level gauges. We here analyze the spatial and temporal fluctuations of surface water flows in the floodplain of the Atrato River, Colombia, in order to evaluate their hydrological connectivity. The basin is one of the rainiest areas of the world with wetland ecosystems threatened by the expansion of agriculture and mining activities. We used 16 Differential Interferometric Synthetic Aperture Radars (DInSAR) phase observations from the ALOS-PALSAR L-band instrument acquired between 2008–2010 to characterize the flow of surface water. We were able to observe water level change in vegetated wetland areas and identify flooding patterns. In the lower basin, flow patterns are conditioned by fluctuations in the levels of the main river channel, whereas in the middle basin, topography and superficial channels strongly influence the flow and connectivity. We found that the variations in water level in a station on the main channel 87 km upstream explained more than 56% of the variations in water level in the floodplain. This result shows that, despite current expansion of agriculture and mining activities, there remain significant hydrological connectivity between wetlands and the Atrato River. This study demonstrates the use of DInSAR for a spatially comprehensive monitoring of the Atrato River basin hydrology. For the first time, we identified the spatiotemporal patterns of surface water flow of the region. We recommend these observations serve as a baseline to monitor the potential impact of ongoing human activities on surface water flows across the Atrato River basin.
Sebastián Palomino-Ángel; Jesús A. Anaya-Acevedo; Marc Simard; Tien-Hao Liao; Fernando Jaramillo. Analysis of Floodplain Dynamics in the Atrato River Colombia Using SAR Interferometry. Water 2019, 11, 875 .
AMA StyleSebastián Palomino-Ángel, Jesús A. Anaya-Acevedo, Marc Simard, Tien-Hao Liao, Fernando Jaramillo. Analysis of Floodplain Dynamics in the Atrato River Colombia Using SAR Interferometry. Water. 2019; 11 (5):875.
Chicago/Turabian StyleSebastián Palomino-Ángel; Jesús A. Anaya-Acevedo; Marc Simard; Tien-Hao Liao; Fernando Jaramillo. 2019. "Analysis of Floodplain Dynamics in the Atrato River Colombia Using SAR Interferometry." Water 11, no. 5: 875.
Wetlands are often vital physical and social components of a country’s natural capital, as well as providers of ecosystem services to local and national communities. We performed a network analysis to prioritize Sustainable Development Goal (SDG) targets for sustainable development in iconic wetlands and wetlandscapes around the world. The analysis was based on the information and perceptions on 45 wetlandscapes worldwide by 49 wetland researchers of the Global Wetland Ecohydrological Network (GWEN). We identified three 2030 Agenda targets of high priority across the wetlandscapes needed to achieve sustainable development: Target 6.3—“Improve water quality”; 2.4—“Sustainable food production”; and 12.2—“Sustainable management of resources”. Moreover, we found specific feedback mechanisms and synergies between SDG targets in the context of wetlands. The most consistent reinforcing interactions were the influence of Target 12.2 on 8.4—“Efficient resource consumption”; and that of Target 6.3 on 12.2. The wetlandscapes could be differentiated in four bundles of distinctive priority SDG-targets: “Basic human needs”, “Sustainable tourism”, “Environmental impact in urban wetlands”, and “Improving and conserving environment”. In general, we find that the SDG groups, targets, and interactions stress that maintaining good water quality and a “wise use” of wetlandscapes are vital to attaining sustainable development within these sensitive ecosystems.
Fernando Jaramillo; Amanda Desormeaux; Johanna Hedlund; James W. Jawitz; Nicola Clerici; Luigi Piemontese; Jenny Alexandra Rodríguez-Rodriguez; Jesús Adolfo Anaya; Juan F. Blanco-Libreros; Sonia Borja; Jorge Celi; Sergey Chalov; Kwok Pan Chun; Matilda Cresso; Georgia Destouni; Shimelis Behailu Dessu; Giuliano Di Baldassarre; Andrea Downing; Luisa Espinosa; Navid Ghajarnia; Pierre Girard; Álvaro G. Gutiérrez; Amy Hansen; Tengfei Hu; Jerker Jarsjö; Zahra Kalantari; Adnane Labbaci; Lucia Licero-Villanueva; John Livsey; Ewa Machotka; Kathryn McCurley; Sebastián Palomino-Ángel; Jan Pietron; René Price; Sorain J. Ramchunder; Constanza Ricaurte-Villota; Luisa Fernanda Ricaurte; Lula Dahir; Erasmo Rodríguez; Jorge Salgado; A. Britta K. Sannel; Ana Carolina Santos; Samaneh Seifollahi-Aghmiuni; Ylva Sjöberg; Lian Sun; Josefin Thorslund; Guillaume Vigouroux; Lan Wang-Erlandsson; Diandian Xu; David Zamora; Alan D. Ziegler; Imenne Åhlén. Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands. Water 2019, 11, 619 .
AMA StyleFernando Jaramillo, Amanda Desormeaux, Johanna Hedlund, James W. Jawitz, Nicola Clerici, Luigi Piemontese, Jenny Alexandra Rodríguez-Rodriguez, Jesús Adolfo Anaya, Juan F. Blanco-Libreros, Sonia Borja, Jorge Celi, Sergey Chalov, Kwok Pan Chun, Matilda Cresso, Georgia Destouni, Shimelis Behailu Dessu, Giuliano Di Baldassarre, Andrea Downing, Luisa Espinosa, Navid Ghajarnia, Pierre Girard, Álvaro G. Gutiérrez, Amy Hansen, Tengfei Hu, Jerker Jarsjö, Zahra Kalantari, Adnane Labbaci, Lucia Licero-Villanueva, John Livsey, Ewa Machotka, Kathryn McCurley, Sebastián Palomino-Ángel, Jan Pietron, René Price, Sorain J. Ramchunder, Constanza Ricaurte-Villota, Luisa Fernanda Ricaurte, Lula Dahir, Erasmo Rodríguez, Jorge Salgado, A. Britta K. Sannel, Ana Carolina Santos, Samaneh Seifollahi-Aghmiuni, Ylva Sjöberg, Lian Sun, Josefin Thorslund, Guillaume Vigouroux, Lan Wang-Erlandsson, Diandian Xu, David Zamora, Alan D. Ziegler, Imenne Åhlén. Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands. Water. 2019; 11 (3):619.
Chicago/Turabian StyleFernando Jaramillo; Amanda Desormeaux; Johanna Hedlund; James W. Jawitz; Nicola Clerici; Luigi Piemontese; Jenny Alexandra Rodríguez-Rodriguez; Jesús Adolfo Anaya; Juan F. Blanco-Libreros; Sonia Borja; Jorge Celi; Sergey Chalov; Kwok Pan Chun; Matilda Cresso; Georgia Destouni; Shimelis Behailu Dessu; Giuliano Di Baldassarre; Andrea Downing; Luisa Espinosa; Navid Ghajarnia; Pierre Girard; Álvaro G. Gutiérrez; Amy Hansen; Tengfei Hu; Jerker Jarsjö; Zahra Kalantari; Adnane Labbaci; Lucia Licero-Villanueva; John Livsey; Ewa Machotka; Kathryn McCurley; Sebastián Palomino-Ángel; Jan Pietron; René Price; Sorain J. Ramchunder; Constanza Ricaurte-Villota; Luisa Fernanda Ricaurte; Lula Dahir; Erasmo Rodríguez; Jorge Salgado; A. Britta K. Sannel; Ana Carolina Santos; Samaneh Seifollahi-Aghmiuni; Ylva Sjöberg; Lian Sun; Josefin Thorslund; Guillaume Vigouroux; Lan Wang-Erlandsson; Diandian Xu; David Zamora; Alan D. Ziegler; Imenne Åhlén. 2019. "Priorities and Interactions of Sustainable Development Goals (SDGs) with Focus on Wetlands." Water 11, no. 3: 619.
The availability of water is critical in determining the distribution of species by favoring or limiting their development, and leading to the formation of different ecosystems. Thus, analyzing the trends and fluctuations of the precipitation is a key factor to understanding our planet's biodiversity. Different physical conditions exist in northwestern South America that cause extreme climate conditions, especially on the west coast of the continent. This region, known as Biogeographic Chocó, has high annual precipitation caused by interactions between the humid currents of the Pacific Ocean and the Andes Mountains. A limited network of hydro-meteorological stations are available in the region to monitor precipitation. Satellite precipitation products can provide valuable information in the absence of field stations, complementing the network of field stations in remote areas, and completing time series for stations that have stopped working. However, remote sensing data must be validated before being used. The goal of this study is thus to evaluate the accuracy of the products of the Tropical Rainfall Measuring Mission 3B42V7 and the Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG), under very high precipitation conditions, and evaluate their strengths and shortcomings. These programs provide daily-precipitation information with a spatial resolution of 0.25° for the former and 0.1° for the latter. The validation was done by using a time series of daily-precipitation data obtained from 185 hydro-meteorological stations distributed over the Biogeographic Chocó. Different statistic metrics were used in the evaluation and comparison: error metrics (mean difference MD, relative mean difference RMD, and root mean square error RMSE), a correlation metric (Pearson correlation CP), contingency metrics (probability of detection POD, false-alarm ratio FAR, and critical success index CSI). We also evaluate the grid and areal scale. The results show that (i) the 3B42V7 and IMERG daily-precipitation products represent well the spatial and temporal distribution of the mean daily precipitation over the Biographic Chocó, and both products are accurate for detecting precipitation events. (ii) The mean daily precipitation tends to be overestimated in areas with relative low precipitation and medium-to-high altitude whereas, on the contrary, mean daily precipitation tends to be underestimated in areas with very high precipitation and medium-to-low altitude. (iii) Finally, copious precipitation (i.e., an annual accumulated precipitation over 5000 mm, which is common for over 55% of the study area) strongly affects the accuracy of the satellite products, leading to significant errors in estimates of daily precipitation for some regions. This study constitutes one of the first exhaustive validation of the IMERG daily precipitation product over the Biogeographic Chocó, and the results provide important information about the potential for using this product in the study area and over regions with high precipitation.
Sebastián Palomino-Ángel; Jesús Anaya; Blanca Botero. Evaluation of 3B42V7 and IMERG daily-precipitation products for a very high-precipitation region in northwestern South America. Atmospheric Research 2018, 217, 37 -48.
AMA StyleSebastián Palomino-Ángel, Jesús Anaya, Blanca Botero. Evaluation of 3B42V7 and IMERG daily-precipitation products for a very high-precipitation region in northwestern South America. Atmospheric Research. 2018; 217 ():37-48.
Chicago/Turabian StyleSebastián Palomino-Ángel; Jesús Anaya; Blanca Botero. 2018. "Evaluation of 3B42V7 and IMERG daily-precipitation products for a very high-precipitation region in northwestern South America." Atmospheric Research 217, no. : 37-48.
El presente estudio tiene como fin determinar el potencial de humedales a nivel de pixel en la llanura de inundación del Río León, se consideraron aspectos de hidrología, vegetación hidrofítica y suelos hidromórficos. Se utilizaron mediciones en campo y modelos distribuidos espacialmente para modelar la hidrología superficial y los niveles piezométricos. También se utilizaron imágenes de satélite para determinar áreas inundadas y vegetación. Los mapas existentes del instituto geográfico Agustín Codazzi fueron utilizados para definir la distribución espacial de los suelos hidromórficos. Se prestó atención especial a la infraestructura agrícola, donde los diques artificiales y trasvases han sido utilizados para modificar la hidrología superficial con el fin de promover el establecimiento de plantaciones y pastoreo. Un total de 536 km2 cumplieron una o más condiciones de humedal según las variables biofísicas, pero solo 393 km2 fueron seleccionados mediante reglas lógicas como pixeles de humedal. La combinación de variables biofísicas para la definición del potencial de humedal es discutida en términos de la distribución espacial y las implicaciones para el manejo de los recursos naturales.
Jesús Adolfo Anaya; John Fernando Escobar-Martínez; Héctor Massone; Gisel Booman; Orlando Mauricio Quiroz-Londoño; César Camilo Cañón-Barriga; Luis Javier Montoya-Jaramillo; Sebastián Palomino-Ángel. Identification of wetland areas in the context of agricultural development using Remote Sensing and GIS. DYNA 2017, 84, 186 -194.
AMA StyleJesús Adolfo Anaya, John Fernando Escobar-Martínez, Héctor Massone, Gisel Booman, Orlando Mauricio Quiroz-Londoño, César Camilo Cañón-Barriga, Luis Javier Montoya-Jaramillo, Sebastián Palomino-Ángel. Identification of wetland areas in the context of agricultural development using Remote Sensing and GIS. DYNA. 2017; 84 (201):186-194.
Chicago/Turabian StyleJesús Adolfo Anaya; John Fernando Escobar-Martínez; Héctor Massone; Gisel Booman; Orlando Mauricio Quiroz-Londoño; César Camilo Cañón-Barriga; Luis Javier Montoya-Jaramillo; Sebastián Palomino-Ángel. 2017. "Identification of wetland areas in the context of agricultural development using Remote Sensing and GIS." DYNA 84, no. 201: 186-194.