2. Methods 2.1. Sampling area The Jose Antonio Alzate Reservoir 198279 N, 998409 W. is located at an altitude of 2670 m above sea level, covering an area of 12 km2,
2. Methods2.1. Sampling areaThe Jose Antonio Alzate Reservoir 198279 N,998409 W. is located at an altitude of 2670 mabove sea level, covering an area of 12 km2,