Evaluación de los humedales del sistema lacustre en la laguna la Magdalena-Atillo del Parque Nacional Sangay como sumidero de Carbon.

Abstract

The present investigation was carried out with the objective of evaluating the concentrations of organic carbon and evaluating the determining nutrients that influence its concentration, seeking to contribute data that support to the knowledge of moorland ecosystems, particularly the river, marshand lake wetlands of the lacustrine system of La Magdalena Lagoon - Atillo of Sangay National Park, this was developed through previously studied and established sampling points. After sampling, standardized laboratory analyzes of the physical-chemical parameters of the soil were carried out as percentages of humidity (River: 56.77%; Marsh: 58.38%; Lake: 45.00%), apparent density (River: 1.49 g/ml; Marsh: 1.18 g/ml; Lacustrine: 1.08 g/ml), pH (Fluvial: 5.15; Marsh: 5.61; Lacustrine: 5.23), electrical conductivity (Fluvial: 0.0248 dS/m; Marsh 0.0285 dS/m; Lacustrine: 0.0579 dS/m), texture (corresponds to loam soils by homogeneity of clays, silt and sand), organic matter (River: 14.56%, Marsh: 12.03%, Lacustrine: 14.56%) and chemical parameters such as nitrogen ( Fluvial: 0.73%, Marsh: 0.60%, Lacustrine: 0.86%), phosphorus (Fluvial: 5.39 mg/kg, Marsh: 4.04 mg/kg, Lacustrine: 6.15 mg/kg), Potassium (Fluvial: 0.17 cmol/kg, Marsh: 0.09 cmol/kg, Lacustrine: 0.35 cmol/kg) and sulfur (Fluvial: 25.05 mg/kg, Marsh: 30.38 mg/kg, Lacustrine: 163.38 mg/kg). Results of the same analyzed parameters were obtained as described above for each of the wetlands. For its part, the wetland that has a greater storage capacity of total organic carbon is the river wetland with 734.74 ton C ha-1 and the determining nutrient in the concentration of organic carbon in the three types of wetlands was nitrogen due to the high correlation between them both. Once the research has been developed, it is necessary to increase and carry out more studies that provide information on the contents and the valuable contribution of these biomes to climate change.