Temporary wetland evolution in the upper Chinchiná river basin and its relationship with ecosystem dynamics

• Published in: Dyna (Medellín, Colombia) Vol. 85; no. 207; pp. 351 - 359
• Main Authors: Florez-Yepes, Gloria Yaneth, Betancur-Pérez, Jhon Fredy, Monterroso-Tobar, Mario Fernando, Londoño-Bonilla, Jhon Makario
• Format: Journal Article
• Language: English; Portuguese
• Published: Bogota Universidad Nacional de Colombia 01.10.2018
• Subjects: Agricultural land; análisis multitemporal; Aquatic ecosystems; Ecosystem dynamics; ENGINEERING, MULTIDISCIPLINARY; Factor analysis; high Andean wetlands; humedales alto andinos; imágenes de radar; imágenes ópticas; Land use; Landsat; Landsat satellites; Livestock; multitemporal analysis; Municipalities; optical images; Optical measuring instruments; radar images; Radar imaging; Remote sensing; River basins; Rivers; Satellite imagery; Sensors; Wetlands; imágenes de radar; humedales alto andinos; high Andean wetlands; análisis multitemporal; radar images; multitemporal analysis; optical images; imágenes ópticas
• ISSN: 0012-7353; 2346-2183
• DOI: 10.15446/dyna.v85n207.69963

A study was performed regarding high Andean wetland degradation in a paramo area between the municipalities of Villamaría and Manizales, Colombia, by way of multi-temporal analysis, using satellite images from optical sensors, such as LANDSAT and RAPIDEYE, as well as images from RADAR sensors (ALOS PALSAR, SENTINEL 1), and analysis of anthropic and natural factors. As a result, the wetlands have begun a significant, linear decline with 67.9% water mirror loss in a nine-year period. There is also a direct relationship between wetland loss, and decreases in precipitation, and anthropization processes. It was determined, from the anthropic factor analysis, that that livestock and agricultural land use are those which cause the greatest negative effect on wetland decline in the studied area.